Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "zastosowanie technologii" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-34 z 34
    Tytuł:
    Zastosowanie technologii cyfrowych do poprawy jakości fotograficznych materiałów transparentnych
    The use of digital technologies to improve the quality of transparent photographic materials
    Autorzy:
    Lis, R.
    Montusiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/395148.pdf
    Data publikacji:
    2010
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    materiały fotograficzne
    poprawa jakości
    zastosowanie technologii cyfrowej
    Opis:
    W artykule omówiono cyfrowe technologie poprawy jakości fotograficznych materiałów transparentnych, takich jak klisze fotograficzne i przeźrocza. Opisano proces digitalizacji materiałów analogowych oraz rodzaje uszkodzeń tych materiałów. Przedstawiono możliwości takich technologii, jak: FARE, Digital ICE, Digital ROC, Digital GEM, Digital DEE, Digital SHO. Zastosowanie tych technologii w procesie digitalizacji analogowych materiałów fotograficznych znacznie polepsza jakość otrzymanych materiałów końcowych oraz pozwala na automatyzację procesu retuszu i rekonstrukcji obrazów cyfrowych.
    The article discusses the digital technologies to improve the quality of transparent materials such as photographic negatives and slides. Describes the process of digitization of analogue materials and the types of damage to these materials. The discusses possibilities of technologies such as FARE, Digital ICE, Digital ROC, Digital GEM, Digital DEE, Digital SHO. The application of these technologies in the process of digitization of analog photographic materials improves the quality of the materials and allows the terminal to automate the process of retouching and restoration of digital images.
    Źródło:
    Postępy Nauki i Techniki; 2010, 4; 33-42
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modern methods of metrological control of ground-based multi-positional radar base system using GPS complexes
    Nowoczesne metody pomiaru pozycji naziemnych systemów radarowych z wykorzystaniem technologii GPS
    Autorzy:
    Antonyuk, V.
    Nichoga, V.
    Prudyus, I.
    Kawalec, A.
    Witczak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/208599.pdf
    Data publikacji:
    2012
    Wydawca:
    Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
    Tematy:
    radiolokacja
    radionawigacja
    zastosowanie technologii GPS
    radar
    GPS-technologies
    measurement
    metrology
    Opis:
    The paper describes the comparative analysis of modern metrological control methods in the tasks of GPS technology applications for high precision multipositional multipurpose radiotechnical base system. Due to great amount of modern measurement means employing GPS technologies, the question of metrological control of these means becomes of special significance.
    W artykule przedstawiono analizę metod precyzyjnego pomiaru pozycji sytemu bazowego z zastosowaniem technologii GPS. Metody te w szczególności są stosowane do pomiaru pozycji systemów radioelektronicznych.
    Źródło:
    Biuletyn Wojskowej Akademii Technicznej; 2012, 61, 2; 59-65
    1234-5865
    Pojawia się w:
    Biuletyn Wojskowej Akademii Technicznej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applying arduino for controlling car parking system
    Autorzy:
    Al-Tabatabaie, Kusay F.
    Abdulameer, Sadeer D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1395586.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    adoption
    appropriation
    wireless technology application
    przyjęcie
    zawłaszczenie
    zastosowanie technologii bezprzewodowej
    Opis:
    With increasing automobiles in the parking space, we could face problems like unplanned parking, lack of discipline, wasting time and fuel while looking for free space around the parking ground. These problems could be solved by applying Arduino for controlling car parking system. The proposed system will detect an available parking slot in short time, saves fuel, offer monitoring car parking system with low consumption, easy to implement and inexpensive.
    Źródło:
    Applied Computer Science; 2019, 15, 2; 53-62
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Decision Support System in the Domain of Casting Defects Diagnosis
    Autorzy:
    Wilk-Kołodziejczyk, D.
    Rojek, G.
    Regulski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/947573.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    castings defects
    diagnosis
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    wady odlewów
    Opis:
    This article presents a computer system for the identification of casting defects using the methodology of Case-Based Reasoning. The system is a decision support tool in the diagnosis of defects in castings and is designed for small and medium-sized plants, where it is not possible to take advantage of multi-criteria data. Without access to complete process data, the diagnosis of casting defects requires the use of methods which process the information based on the experience and observations of a technologist responsible for the inspection of ready castings. The problem, known and studied for a long time, was decided to be solved with a computer system using a CBR (Case-Based Reasoning) methodology. The CBR methodology not only allows using expert knowledge accumulated in the implementation phase, but also provides the system with an opportunity to "learn" by collecting new cases solved earlier by this system. The authors present a solution to the system of inference based on the accumulated cases, in which the main principle of operation is searching for similarities between the cases observed and cases stored in the knowledge base.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 3; 107-110
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical Programming for Lot Sizing and Production Scheduling in Foundries
    Autorzy:
    Duda, J.
    Stawowy, A.
    Basiura, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/380801.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    production planning
    scheduling
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    planowanie produkcji
    Opis:
    The problem considered in the paper is motivated by production planning in a foundry equipped with the furnace and casting line, which provides a variety of castings in various grades of cast iron/steel for a large number of customers. The quantity of molten metal does not exceed the capacity of the furnace, the load is a particular type of metal from which the products are made. The goal is to create the order of the melted metal loads to prevent delays in delivery of goods to customers. This problem is generally considered as a lot-sizing and scheduling problem. The paper describes a mathematical programming model that formally defines the optimization problem and its relaxed version that is based on the conception of rolling-horizon planning.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 3; 17-20
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer Catalog and Semantic Search of Data in the Domain of Cast Iron Processing
    Autorzy:
    Rojek, G.
    Regulski, K.
    Wilk-Kołodziejczyk, D.
    Kluska-Nawarecka, S.
    Wawrzaszek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/381770.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technologies
    foundry
    semantic search
    ontology
    cast iron processing
    zastosowanie technologii informacyjnych
    odlewnictwo
    obróbka żeliwa
    Opis:
    The aim of this study is to design and implement a computer system, which will allow the semantic cataloging and data retrieval in the field of cast iron processing. The intention is to let the system architecture allow for consideration of data on various processing techniques based on the information available or searched by a potential user. This is achieved by separating the system code from the knowledge of the processing operations or from the chemical composition of the material being processed. This is made possible by the creation and subsequent use of formal knowledge representation in the form of ontology. So, any use of the system is associated with the use of ontologies, either as an aid for the cataloging of new data, or as an indication of restrictions imposed on the data which draw user attention. The use of formal knowledge representation also allows consideration of semantic meaning, a consequence of which may be, for example, returning all elements in subclasses of the searched process class or material grade.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 2; 79-84
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study of the Efficiency of Polish Foundries Using Data Envelopment Analysis
    Autorzy:
    Stawowy, A.
    Duda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/379915.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    benchmarking
    data analysis
    application of information technology
    efficiency
    przemysł odlewniczy
    analiza danych
    zastosowanie technologii informacyjnch
    efektywność
    Opis:
    The article presents a study on the effectiveness of the foundries using Data Envelopment Analysis (DEA) method. The aim of the article is to analyze the usefulness of DEA method in the study of the relative efficiency of the foundries. DEA is a benchmarking technique based on linear programming to evaluate the effectiveness of the analyzed objects. The research was conducted in four Polish and two foreign plants. Evaluated foundries work in similar markets and have similar production technology. We created a DEA model with two inputs (fixed assets and employment) and one output (operating profit). The model was produced and solved using Microsoft Excel together with its Solver add-in. Moreover, we wrote a short VBA script to perform automating calculations. The results of our study include a benchmark and foundries’ ranking, and directions to improve the efficiency of inefficient units. Our research has shown that DEA can be a very valuable method for evaluating the efficiency of foundries.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 1; 223-227
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integrated Analytical and Measurement System for the Evaluation of the Properties of Cast Metals and Alloys
    Autorzy:
    Biernat, S.
    Bydałek, A. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/380877.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    solidification process
    brass
    hardness
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    krzepnięcie
    mosiądz
    twardość
    Opis:
    The article presents an integrated analytical and measurement system for evaluation of the properties of cast metals and alloys. The presented platform is an extension of the SLAG - PROP application with new modules, which allow to use information on metallurgical processes in an even more effective way, as well as to evaluate the finished product. In addition, the construction of a measuring station for the analysis of thermal processes taking place in a metal bath allows for precise observation of phenomena together with their appropriate interpretation. The article presents not only the cooling curves of certain copper alloys. The analysis also covered mechanical properties related to hardness, finished products depending on the mold in which the products were cast. In the literature one can find information about the mechanical properties of products in the improved state, usually after plastic or thermal treatment, omitting their properties obtained as a result of a naturally made casting. The article also presents the method of placing information in the database using a convenient graphical tool.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 13-18
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Telework usage among white collar workers in the real estate sector
    Zastosowanie telepracy wśród pracowników umysłowych sektora nieruchomości
    Autorzy:
    Arvola, R.
    Tint, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/203198.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    telework
    telecommuting
    ICT use
    office work
    real estate sector
    telepraca
    telekomunikacja
    zastosowanie technologii ICT
    praca biurowa
    sektor nieruchomości
    Opis:
    Telework has become a common form of work for white-collar workers in recent years. Although the number of telework studies increases, there is still a lack of knowledge regarding telework – as the opportunities for this mode of work are developing rapidly. The purpose of the current study is to find out the spread and drivers of telework in the real estate sector. The current research uses empirical data from a survey with 127 respondents who work for real estate companies in Estonia. Data were collected through a quantitative questionnaire during 2017. Three hypotheses were presented regarding the drivers for the employees. The study confirmed that employees in the real estate sector use telework in order to save commuting time and costs, and to have more freedom and privacy. The results show that only a small number of employees have remained untouched by telework. Based on the current study on information-communication technology (ICT) and mobile devices’ daily use, telework has a high potential in the real estate sector. The decision to work remotely is usually made by workers themselves and therefore the main drivers for teleworking have been employee-centred. It is necessary to educate employees and employers concerning the advantages and risks connected with telework. That would contribute to introducing telework’s potential and suggestions to them.
    Telepraca stała się powszechną formą pracy dla pracowników umysłowych w ostatnich latach. Chociaż wzrasta liczba badań z zakresu telepracy, nadal brakuje wiedzy na jej temat – ponieważ możliwości tego trybu pracy rozwijają się szybko. Celem badania było znalezienie obszaru i motywacji do telepracy w sektorze nieruchomości. Aktualne badania wykorzystują dane empiryczne z badania przeprowadzonego wśród 127 respondentów, którzy pracują w Estonii dla firm zajmujących się nieruchomościami. Dane zbierano w ramach ilościowego kwestionariusza w 2017 r. Przedstawiono trzy hipotezy dotyczące motywacji pracowników. Badanie potwierdziło, że pracownicy sektora nieruchomości korzystają z telepracy w celu oszczędności czasu i dojazdu do pracy oraz większej wolności i prywatności. Wyniki pokazują, że tylko niewielka liczba pracowników nie korzysta z telepracy. Według wyników badania dotyczącego technologii informacyjno-komunikacyjnych (ICT) i urządzeń przenośnych codziennego użytku, telepraca ma duży potencjał w sektorze nieruchomości. Decyzja o pracy zdalnej odbywa się zazwyczaj przez samych pracowników, a zatem główne czynniki wpływające na telepracę zostały skoncentrowane na pracownikach. Konieczne jest wykształcenie pracowników i pracodawców w zakresie zalet i zagrożeń związanych z telepracą. To mogłoby przyczynić się do zapoznania ich potencjałem i propozycjami telepracy.
    Źródło:
    Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie; 2017, 75; 35-49
    0239-9415
    Pojawia się w:
    Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization methods for lot-sizing problem in an automated foundry
    Algorytmy planowania partii produkcyjnych w zautomatyzowanej odlewni
    Autorzy:
    Duda, J.
    Stawowy, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/354705.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology to the foundry industry
    production planning
    lot-sizing problem
    planowanie produkcji
    zastosowanie technologii informatycznych
    Opis:
    In the paper we studied a production planning problem in a mid-size foundry that provides tailor-made cast products in small lots for a large number of clients. Assuming that a production bottleneck is the furnace, a mixed-integer programming (MIP) model is proposed to determine the lot size of the items and the required alloys to be produced during each period of the finite planning horizon that is subdivided into smaller periods. As using an advanced commercial MIP solvers may be impractical for more complex and large problem instances, we proposed and compared a few computational intelligence heuristics i.e. tabu search, genetic algorithm and differential evolution. The examination showed that heuristic approaches can provide a good compromise between speed and quality of solutions and can be used in real-world production planning.
    W pracy przedstawiono problem planowania produkcji w odlewni średniej wielkości, która dostarcza odlewy na zamówienie dla dużej liczby klientów. W takim problemie konieczne jest określenie wielkości partii produkcyjnej oraz ilości i gatunku metalu w każdym okresie skończonego horyzontu planowania, który jest podzielony na mniejsze podokresy. Przy założeniu, że wąskim gardłem jest piec do topienia metalu, zaproponowano programowanie całkowitoliczbowe mieszane (Mixed-Integer Programming - MIP) jako model planowania i harmonogramowania produkcji w odlewni. Jako że użycie zaawansowanych komercyjnych solverów może być niepraktyczne dla złożonych problemów, zaproponowano i porównano trzy heurystyki inteligencji obliczeniowej tj. tabu search, algorytm genetyczny i ewolucja różnicowa. Eksperymenty obliczeniowe wykazały, że algorytmy heurystyczne zapewniają zadowalającą szybkość i jakość rozwiązań.
    Źródło:
    Archives of Metallurgy and Materials; 2013, 58, 3; 863-866
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Applicability of Business Rules to Production Management in Foundries
    Autorzy:
    Stawowy, A.
    Duda, J.
    Wrona, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/383187.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    operation management
    business rules
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    zarządzanie operacyjne
    reguły biznesowe
    Opis:
    The size and complexity of decision problems in production systems and their impact on the economic results of companies make it necessary to develop new methods of solving these problems. One of the latest methods of decision support is business rules management. This approach can be used for the quantitative and qualitative decision, among them to production management. Our study has shown that the concept of business rules BR can play at most a supporting role in manufacturing management, but alone cannot form a complete solution for production management in foundries.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 1; 85-88
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coordinated Production Planning and Scheduling Problem in a Foundry
    Autorzy:
    Stawowy, A.
    Duda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381726.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    production planning
    scheduling
    heuristics
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    planowanie produkcji
    planowanie skoordynowane
    Opis:
    In the paper, we present a coordinated production planning and scheduling problem for three major shops in a typical alloy casting foundry, i.e. a melting shop, molding shop with automatic line and a core shop. The castings, prepared from different metal, have different weight and different number of cores. Although core preparation does not required as strict coordination with molding plan as metal preparation in furnaces, some cores may have limited shelf life, depending on the material used, or at least it is usually not the best organizational practice to prepare them long in advance. Core shop have limited capacity, so the cores for castings that require multiple cores should be prepared earlier. We present a mixed integer programming model for the coordinated production planning and scheduling problem of the shops. Then we propose a simple Lagrangian relaxation heuristic and evolutionary based heuristic to solve the coordinated problem. The applicability of the proposed solution in industrial practice is verified on large instances of the problem with the data simulating actual production parameters in one of the medium size foundry.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 133-138
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Production Scheduling for the Two Furnaces – One Casting Line System
    Autorzy:
    Stawowy, A.
    Duda, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/383276.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    heuristics
    application of information technology
    foundry industry
    scheduling
    production planning
    heurystyka
    zastosowanie technologii informatycznej
    przemysł odlewniczy
    planowanie
    planowanie produkcji
    Opis:
    The paper presents a production scheduling problem in a foundry equipped with two furnaces and one casting line, where the line is a bottleneck and furnaces, of the same capacity, work in parallel. The amount of produced castings may not exceed the capacity of the line and the furnaces, and their loads determine metal type from which the products are manufactured on the casting line. The purpose of planning is to create the processing order of metal production to prevent delays in the delivery of the ordered products to the customers. The problem is a mix of a lot-sizing and scheduling problems on two machines (the furnaces) run in parallel. The article gives a mathematical model that defines the optimization problem, and its relaxed version based on the concept of a rolling-horizon planning. The proposed approaches, i.e. commercial solver and Iterated Local Search (ILS) heuristic, were tested on a sample data and different problem sizes. The tests have shown that rolling horizon approach gives the best results for most problems, however, developed ILS algorithm gives better results for the largest problem instances with tight furnace capacity.
    Źródło:
    Archives of Foundry Engineering; 2020, 20, 1; 43-48
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Thermal Stresses in Components of Pallets Operating in Furnaces for the Carburising Treatment
    Autorzy:
    Bajwoluk, A.
    Gutowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/380818.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    pallet
    heat flow
    thermal stresses
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    przepływ ciepła
    naprężenia
    Opis:
    The study is devoted to an analysis of thermal stresses arising in the basic elements of pallets used in furnaces for the carburising treatment. The construction of a pallet was presented and an example of its operating cycle was described. Using finite element method, a simulation analysis of the kinetics of cooling and heating of selected pallet components was performed. The results obtained were verified experimentally and used as a basis for the analysis of thermal stresses generated in these components during their cooling.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 175-180
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reconstruction of the Casting Technology in the Bronze Age on the Basis of Investigations and Visualisation of Casting Moulds
    Autorzy:
    Garbacz-Klempka, A.
    Kwak, Z.
    Żak, P. L.
    Szucki, M.
    Ścibior, D.
    Stolarczyk, T.
    Nowak, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/381850.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    archaeometallurgy
    casting moulds
    bronze
    XRF
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    archaeometalurgia
    formy odlewnicze
    brąz
    Opis:
    During excavation of the cremation cemetery of urnfield culture in Legnica at Spokojna Street (Lower Silesia, Poland), dated to 1100-700 BC, the largest - so far in Poland – a collection of casting moulds from the Bronze Age was discovered: three moulds for axes casting made out of stone and five moulds for casting sickles, razors, spearhead and chisels, made out of clay. This archaeological find constituted fittings of foundrymen’s graves. In order to perform the complete analysis of moulds in respect of their application in the Bronze Age casting technology analytical methods, as well as, computer aided methods of technological processes were used. Macroscopic investigations were performed and the X-ray fluorescence spectrometry method was used to analyse the chemical composition and metal elements content in mould cavities. Moulds were subjected to three-dimensional scanning and due to the reverse engineering the geometry of castings produced in these moulds were obtained. The gathered data was used to perform design and research works by means of the MAGMA5 software. Various variants of the pouring process and alloys solidification in these archaeological moulds were simulated. The obtained results were utilised in the interpretation of the Bronze Age casting production in stone and clay moulds, with regard to their quality and possibility of casting defects occurrence being the result of these moulds construction. The reverse engineering, modelling and computer simulation allowed the analysis of moulds and castings. Investigations of casting moulds together with their digitalisation and reconstruction of casting technology, confirm the high advancement degree of production processes in the Bronze Age.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 184-190
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Covid pandemic as a disruptive factor enhancing ICT use in social sciences’ teaching practices
    Autorzy:
    Maruszewska, Ewa Wanda
    Eisenbardt, Monika
    Tuszkiewicz, Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/27313583.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    Covid
    technology in teaching
    activity theory
    ICT use
    higher education
    technologia w nauczaniu
    teoria działań
    zastosowanie technologii ICT
    wyższa edukacja
    Opis:
    Purpose: Our research attempts to understand a change in social sciences’ academics' teaching practices that can be observed during the COVID pandemic and that are predicted after the pandemic. Design: We investigate – in the light of the Blin’s and Munro’s activity theory (2008) – whether the COVID pandemic is a disruptive factor that may lead to the transformation of social sciences academics’ teaching practices. The research instrument was a worldwide survey conducted among social sciences’ academics. Findings: COVID pandemic has already introduced changes into academics’ teaching practices in a form of broad ICT usage as well as initiated changes in the teaching activities design. Research limitations: The number of responses is limited to 382 with only a collection of 77 responses from outside of Europe. We applied a general approach for ICT means not asking respondents about particular ICT tools. COVID as a pandemic evolves continuously indicating the need for further, in-depth research in this field. Practical implications: COVID pandemic might serve as a disruptive factor enforcing further changes in social sciences’ academic teaching practices after the pandemic. Social implications: Our results indicate that the quality of social sciences teaching has worsened during the pandemic and most of the respondents do not predict significant changes in the quality of teaching after the pandemic compared to the quality of teaching before the pandemic. Originality: We contribute by showing that introduction of a new tool (ICT) and modified teaching activity design resulted in a serious alteration of the teaching practice of social sciences’ academics. We did not confirm that COVID disruption was expansive enough to permanently transform teaching practices of social sciences academics, hence we suggest that obstacles to successful incorporation of ICT in teaching practices are still present. We showed that ICT is predicted to be used more frequently rather than before (when it was only utilised as a platform to transfer traditional material) and will not modify the well-established practices referring to instructional tools. Our study suggests that the relation between teacher and teaching activity design is not mediated by ICT tools, which may result in resistance from the teachers.
    Źródło:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2022, 160; 383--407
    1641-3466
    Pojawia się w:
    Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Podziemne zgazowanie węgla : stan rozwoju i perspektywy zastosowania technologii w Polsce
    Underground coal gasification : status of development and prospects of application technology in Poland
    Autorzy:
    Gąsior, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/109187.pdf
    Data publikacji:
    2016
    Wydawca:
    AXIS MEDIA
    Tematy:
    podziemne zgazowanie węgla
    stan
    perspektywy rozwoju
    zastosowanie technologii
    energia elektryczna
    Polska
    underground coal gasification
    status
    prospects
    application technology
    electricity
    Polska
    Opis:
    Regularny wzrost cen ropy naftowej i gazu ziemnego, wyczerpywanie się łatwo dostępnych zasobów powierzchniowych węgli kopalnych, jak i zaostrzenia polityki UE odnośnie emisji dwutlenku węgla do atmosfery skłaniają do poszukiwania tanich, a zarazem ekologicznych rozwiązań dotyczących produkcji energii elektrycznej. Z uwagi na pokaźne zasoby węgla kamiennego w Polsce koniecznym staje się opracowanie niekonwencjonalnych technologii eksploatacji pokładów węgla, które pozwolą na sięgnięcie po zasoby niedostępne przy użyciu dotychczasowo stosowanych metod, głębinowej oraz odkrywkowej lub których wydobycie było dotychczas nieopłacalne ekonomicznie bądź niebezpieczne. Podziemne zgazowanie węgla umożliwia wzrost efektywności wykorzystania złóż węglowych przy jednoczesnym zmniejszeniu emisji CO2 w porównaniu do tradycyjnie stosowanych technologii. W pracy opisano obecny stan rozwoju technologii PZW oraz przedstawiono wybrane wyniki badań instalacji doświadczalnej i pilotowej PZW w Polsce.
    A regular increase in the prices of crude oil and natural gas, the depletion of easily available resources of surface coal fossil and tightening EU policy on carbon dioxide emissions into the atmosphere tend to search for cheap, and also ecological solutions for the electricity production. Due to the rich coal resources in Poland, it becomes necessary to develop unconventional technology of coal exploitation, which can allow to acces to the resources unavailable with the actually applied methods or the extraction was previously economically unprofi table or dangerous. Underground coal gasifi cation enables the increase of coal deposits exploitation effi ciency as well as CO2 emission reduce compared to the traditional using technologies. The paper describes the current state of technology UCG and presents selected tests results of UCG experimental and pilot installation in Poland.
    Źródło:
    Piece Przemysłowe & Kotły; 2016, 3; 18-22
    2082-9833
    Pojawia się w:
    Piece Przemysłowe & Kotły
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of ALSV(FD) logic and XTT knowledge representation in the range of ADI properties
    Autorzy:
    Regulski, K.
    Wilk-Kołodziejczyk, D.
    Rojek, B.
    Kluska-Nawarecka, S.
    Adrian, W. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/380492.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry production
    computer aided foundry
    application of information technologies
    ADI
    ALSV
    rule based XTT format
    odlewnia
    odlewy
    komputerowe wspomaganie odlewni
    zastosowanie technologii informatycznych
    Opis:
    The objective of studies presented in this publication was structuring of research knowledge about the ADI functional properties and changes in these properties due to material treatment. The results obtained were an outcome of research on the selection of a format of knowledge representation that would be useful in further work aiming at the design, application and implementation of an effective system supporting the decisions of a technologist concerning the choice of a suitable material (ADI in this case) and appropriate treatment process (if necessary). ALSV(FD) logic allows easy modelling of knowledge, which should let addressees of the target system carry out knowledge modelling by themselves. The expressiveness of ALSV (FD) logic allows recording the values of attributes from the scope of the modelled domain regarding ADI, which is undoubtedly an advantage in the context of further use of the logic. Yet, although the logic by itself does not allow creating the rules of knowledge, it may form a basis for the XTT format that is rule-based notation. The difficulty in the use of XTT format for knowledge modelling is acceptable, but formalism is not suitable for the discovery of rules, and therefore the knowledge of technologist is required to determine the impact of process parameters on values that are functional properties of ADI. The characteristics of ALSV(FD) logic and XTT formalism, described in this article, cover the most important aspects of a broadly discussed, full evaluation of the applicability of these solutions in the construction of a system supporting the decisions of a technologist.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 75-78
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-Criterion Assessment of Different Variants of Casts Manufacturing Processes
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/381235.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    automation in foundry
    robotics in foundry
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    automatyka w odlewnictwie
    robotyka w odlewnictwie
    Opis:
    The paper presents the issue of production processes improvement in foundries in the area of finishing treatment of iron casts manufactured on automated foundry lines with vertical or horizontal mould division. Due to numerous factors which influence the efficiency of the processes, multi-criterion assessment tools were proposed in order to select the optimal solution for the assumed criteria. After determining the criteria weight using the Saaty method, a simulation experiment was designed and carried out which presents possible scenarios of casts finishing treatment operations. Basing on experiment reports from a computer model, particular solutions were evaluated using the Yager’s method. The evaluation of the experiment results was performed by experts who assessed different options according to each of the criteria adopted. After the establishment of the total standardized ratings by averaging the scores given by individual experts, the final decision was generated. Using the presented method, the best solution was chosen from among the analyzed scenarios.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 3; 47-50
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Verification of the Cast Iron Solidification Model
    Autorzy:
    Mendakiewicz, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2174627.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    solidification process
    numerical techniques
    thermal analysis
    derivative analysis
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    krzepnięcie
    techniki numeryczne
    analiza termiczna
    Opis:
    The article concerns the experimental verification of the numerical model simulating the solidification and cooling processes proceeding in the domain of cast iron casting. The approximate course of the function describing the evolution of latent heat and the value of substitute specific heat resulting from its course were obtained using the thermal and derivative analysis (TDA) method The TDA was also used to measure the cooling curves at the distinguished points of the casting. The results obtained in this way were compared with the calculated cooling curves at the same points. At the stage of numerical computations, the explicit scheme of the finite difference method was applied. The agreement between the measured and calculated cooling curves is fully satisfactory.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 3; 91--94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shrinkage Porosity Criterion and Its Application to A 5.5 Ton Steel Ingot
    Autorzy:
    Zhang, C.
    Bao, Y.
    Wang, M.
    Zhang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/382021.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    quality management
    shrinkage porosity
    ingot solidification
    application of information technology
    numerical simulation
    przemysł odlewniczy
    zarządzanie jakością
    porowatość
    krzepnięcie
    zastosowanie technologii informatycznych
    symulacja numeryczna
    Opis:
    In order to predict the distribution of shrinkage porosity in steel ingot efficiently and accurately, a criterion R√L and a method to obtain its threshold value were proposed. The criterion R√L was derived based on the solidification characteristics of steel ingot and pressure gradient in the mushy zone, in which the physical properties, the thermal parameters, the structure of the mushy zone and the secondary dendrite arm spacing were all taken into consideration. The threshold value of the criterion R√L was obtained with combination of numerical simulation of ingot solidification and total solidification shrinkage rate. Prediction of the shrinkage porosity in a 5.5 ton ingot of 2Cr13 steel with criterion R√L>0.21 m･℃1/2･s-3/2 agreed well with the results of experimental sectioning. Based on this criterion, optimization of the ingot was carried out by decreasing the height-to-diameter ratio and increasing the taper, which successfully eliminated the centreline porosity and further proved the applicability of this criterion.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 27-32
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Introducing Advanced Data Analytics in Perspective of Industry 4.0 in a Die Casting Foundry
    Autorzy:
    Perzyk, M.
    Dybowski, B.
    Kozłowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/381424.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    mechanical properties
    die casting
    process control
    data analytics
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    właściwości mechaniczne
    odlewanie
    kontrola procesu
    analityka danych
    Opis:
    The paper presents some aspects of a development project related to Industry 4.0 that was executed at Nemak, a leading manufacturer of the aluminium castings for the automotive industry, in its high pressure die casting foundry in Poland. The developed data analytics system aims at predicting the casting quality basing on the production data. The objective is to use these data for optimizing process parameters to raise the products’ quality as well as to improve the productivity. Characterization of the production data including the recorded process parameters and the role of mechanical properties of the castings as the process outputs is presented. The system incorporates advanced data analytics and computation tools based on the analysis of variance (ANOVA) and applying an MS Excel platform. It enables the foundry engineers and operators finding the most efficient process variables to ensure high mechanical properties of the aluminium engine block castings. The main features of the system are explained and illustrated by appropriate graphs. Chances and threats connected with applications of the data-driven modelling in die casting are discussed.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 53-57
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of the Heat Transfer Coefficient in the Inverse Stefan Problem by Using the ABC Algorithm
    Autorzy:
    Hetmaniok, E.
    Słota, D.
    Zielonka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/382882.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    solidification process
    foundry industry
    application of information technology
    Stefan problem
    swarm intelligence
    ABC algorithm
    proces krzepnięcia
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    Problem Stefana
    inteligencja roju
    algorytm ABC
    Opis:
    A procedure based on the Artificial Bee Colony algorithm for solving the two-phase axisymmetric one-dimensional inverse Stefan problem with the third kind boundary condition is presented in this paper. Solving of the considered problem consists in reconstruction of the function describing the heat transfer coefficient appearing in boundary condition of the third kind in such a way that the reconstructed values of temperature would be as closed as possible to the measurements of temperature given in selected points of the solid. A crucial part of the solution method consists in minimizing some functional which will be executed with the aid of one of the swarm intelligence algorithms - the ABC algorithm.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 2s; 27-32
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Values of Diffusion Coefficient on Results of Diffusion Modelling Driven by Chemical Potential Gradien
    Autorzy:
    Wróbel, Marek
    Burbelko, Andriy
    Powiązania:
    https://bibliotekanauki.pl/articles/2174626.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    diffusion modelling
    Calphad method
    chemical potential
    diffusion coefficient
    przemysł odlewniczy
    zastosowanie technologii informatycznej
    modelowanie dyfuzyjne
    metoda Calphad
    potencjał chemiczny
    współczynnik dyfuzji
    Opis:
    In the paper critical role of including the right material parameters, as input values for computer modelling, is stressed. The presented model of diffusion, based on chemical potential gradient, in order to perform calculations, requires a parameter called mobility, which can be calculated using the diffusion coefficient. When analysing the diffusion problem, it is a common practice to assume the diffusion coefficient to be a constant within the range of temperature and chemical composition considered. By doing so the calculations are considerably simplified at the cost of the accuracy of the results. In order to make a reasoned decision, whether this simplification is desirable for particular systems and conditions, its impact on the accuracy of calculations needs to be assessed. The paper presents such evaluation by comparing results of modelling with a constant value of diffusion coefficient to results where the dependency of Di on temperature, chemical composition or both are added. The results show how a given deviation of diffusivity is correlated with the change in the final results. Simulations were performed in a single dimension for the FCC phase in Fe-C, Fe-Si and Fe-Mn systems. Different initial compositions and temperature profiles were used.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 3; 81--90
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methods of Computational Intelligence in the Context of Quality Assurance in Foundry Products
    Autorzy:
    Rojek, G.
    Regulski, K.
    Wilk-Kołodziejczyk, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/380386.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    quality management
    casting defects
    computational intelligence
    artificial intelligence
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    zarządzanie jakością
    wady odlewnicze
    inteligencja obliczeniowa
    sztuczna inteligencja
    Opis:
    One way to ensure the required technical characteristics of castings is the strict control of production parameters affecting the quality of the finished products. If the production process is improperly configured, the resulting defects in castings lead to huge losses. Therefore, from the point of view of economics, it is advisable to use the methods of computational intelligence in the field of quality assurance and adjustment of parameters of future production. At the same time, the development of knowledge in the field of metallurgy, aimed to raise the technical level and efficiency of the manufacture of foundry products, should be followed by the development of information systems to support production processes in order to improve their effectiveness and compliance with the increasingly more stringent requirements of ergonomics, occupational safety, environmental protection and quality. This article is a presentation of artificial intelligence methods used in practical applications related to quality assurance. The problem of control of the production process involves the use of tools such as the induction of decision trees, fuzzy logic, rough set theory, artificial neural networks or case-based reasoning.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 11-16
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology for Diagnosing the Causes of Die-Casting Defects, Based on Advanced Big Data Modelling
    Autorzy:
    Okuniewska, A.
    Perzyk, M. A.
    Kozłowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2126910.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    die casting
    castings defects
    process control
    data analytics
    application of information technology
    przemysł odlewniczy
    odlewanie ciśnieniowe
    wady odlewów
    kontrola procesu
    analiza danych
    zastosowanie technologii informatycznych
    Opis:
    The purpose of this paper was to develop a methodology for diagnosing the causes of die-casting defects based on advanced modelling, to correctly diagnose and identify process parameters that have a significant impact on product defect generation, optimize the process parameters and rise the products’ quality, thereby improving the manufacturing process efficiency. The industrial data used for modelling came from foundry being a leading manufacturer of the high-pressure die-casting production process of aluminum cylinder blocks for the world's leading automotive brands. The paper presents some aspects related to data analytics in the era of Industry 4.0. and Smart Factory concepts. The methodology includes computation tools for advanced data analysis and modelling, such as ANOVA (analysis of variance), ANN (artificial neural networks) both applied on the Statistica platform, then gradient and evolutionary optimization methods applied in MS Excel program’s Solver add-in. The main features of the presented methodology are explained and presented in tables and illustrated with appropriate graphs. All opportunities and risks of implementing data-driven modelling systems in high-pressure die-casting processes have been considered.
    Źródło:
    Archives of Foundry Engineering; 2021, 21, 4; 103--109
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal Stresses in the Accessories of Heat Treatment Furnaces vs Cooling Kinetics
    Autorzy:
    Bajwoluk, A.
    Gutowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/382585.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    information technology
    grates
    thermal stresses
    heat treatment equipment
    przemysł odlewniczy
    zastosowanie technologii informatycznej
    technologia informatyczna
    ruszty
    naprężenia termiczne
    sprzęt do obróbki cieplnej
    Opis:
    Depending on the course of the processes of heat treatment and thermo-chemical treatment, the technological equipment of heat treatment furnaces is exposed to different operating conditions, as the said processes differ among themselves in the temperature of annealing and atmosphere prevailing in the furnace chamber, in the duration of a single work cycle and in the type and temperature of the coolant. These differences affect the magnitude of stresses occurring in each cycle of the operation of furnace accessories, and thus play an important role in fatigue processes leading to the destruction of these accessories. The kinetics of temperature changes during each cooling process plays an important role in the formation of thermal stresses on the cross-section of the cooled parts. It depends on many factors, including the initial cooling temperature, the type and temperature of the cooling medium, or the dimensions and shape of the object. This article presents a numerical analysis of the effect of the initial temperature on the distribution of stresses on the cross-section of the grate ribs, generated in the first few seconds of the cooling process carried out in two cooling media, i.e. hardening oil and water. The analysis was carried out by the finite element method, based on the results of experimental testes of temperature changes in the rib during its cooling.
    Źródło:
    Archives of Foundry Engineering; 2019, 3; 88-93
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Implementation of Computer Platform for Foundries Cooperating in a Supply Chain
    Autorzy:
    Wilk-Kołodziejczyk, D.
    Kluska-Nawarecka, S.
    Rojek, G.
    Regulski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/382875.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    innovative foundry technologies
    innovative materials
    multi-agent technology
    production support
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    innowacyjne technologie odlewnicze
    materiały innowacyjne
    wsparcie produkcji
    Opis:
    This article presents a practical solution in the form of implementation of agent-based platform for the management of contracts in a network of foundries. The described implementation is a continuation of earlier scientific work in the field of design and theoretical system specification for cooperating companies [1]. The implementation addresses key design assumptions - the system is implemented using multi-agent technology, which offers the possibility of decentralisation and distributed processing of specified contracts and tenders. The implemented system enables the joint management of orders for a network of small and medium-sized metallurgical plants, while providing them with greater competitiveness and the ability to carry out large procurements. The article presents the functional aspects of the system - the user interface and the principle of operation of individual agents that represent businesses seeking potential suppliers or recipients of services and products. Additionally, the system is equipped with a bi-directional agent translating standards based on ontologies, which aims to automate the decision-making process during tender specifications as a response to the request.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 3; 111-116
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Methodology for the Construction of a Rule-Based Knowledge Base Enabling the Selection of Appropriate Bronze Heat Treatment Parameters Using Rough Sets
    Metodyka budowy regułowej bazy wiedzy umożliwiającej dobór odpowiednich parametrów obróbki cieplnej brązów z zastosowaniem zbiorów przybliżonych
    Autorzy:
    Górny, Z.
    Kluska-Nawarecka, S.
    Wilk-Kołodziejczyk, D.
    Regulski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/353780.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology to the foundry industry
    heat treatment
    classification algorithms
    rough sets
    data mining
    zastosowanie technologii informatycznych dla przemysłu odlewniczego
    obróbka cieplna
    algorytm klasyfikacji
    zbiory przybliżone
    Opis:
    Decisions regarding appropriate methods for the heat treatment of bronzes affect the final properties obtained in these materials. This study gives an example of the construction of a knowledge base with application of the rough set theory. Using relevant inference mechanisms, knowledge stored in the rule-based database allows the selection of appropriate heat treatment parameters to achieve the required properties of bronze. The paper presents the methodology and the results of exploratory research. It also discloses the methodology used in the creation of a knowledge base.
    Decyzje dotyczące odpowiedniej metody obróbki cieplnej brązów mają wpływ na uzyskanie końcowych własności tych materiałów. W pracy przedstawiono przykład budowy bazy wiedzy z zastosowaniem teorii zbiorów przybliżonych. Wiedza zgromadzona w bazie reguł umożliwia za pomocą mechanizmów wnioskowania dobór odpowiednich parametrów obróbki w celu uzyskania pożądanych własności brązu.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 1; 309-312
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New Use of Instruments for More Accurate Wax Pattern Blade Segment Production
    Autorzy:
    Herman, A.
    Kubelková, I.
    Vrátný, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/381106.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    innovative foundry technologies
    innovative materials
    Investment casting
    gas turbines
    infrared thermography
    simulation
    przemysł odlewniczy
    zastosowanie technologii informatycznej
    innowacyjne technologie odlewnicze
    innowacyjne materiały
    turbiny gazowe
    symulacja
    Opis:
    Precision casting is currently motivated by high demand especially for castings for the aerospace, automotive and gas turbine industries. High demands on precision of this parts pressure foundries to search for the new tools which can help them to improve the production. One of these tools is the numerical simulation of injection process, whereas such software especially for investment casting wax injection, process does not exist yet and for this case must be the existing software, for alloys or plastic, modified. This paper focuses on the use of numerical simulations to predict the behavior of injected models of gas turbine blades segments. The properties of wax mixtures, which were imported into the Cadmould simulation software as a material model, were found. The results of the simulations were verified using the results of 3D scanning measurements of wax models. As a supporting technology for verifying the results was used the Infrared Thermography.
    Źródło:
    Archives of Foundry Engineering; 2019, 2; 101-106
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heuristic Model of the Mechanical Properties of a Hypoeutectic EN AC-42100 (EN AC-AlSi7Mg0.3) Silumin Alloy Subjected to Heat Treatment
    Autorzy:
    Górny, Z.
    Kluska-Nawarecka, S.
    Czekaj, E.
    Wilk-Kołodziejczyk, D.
    Saja, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/383182.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    information technology
    application of information technology
    foundry industry
    silumin alloy
    mechanical properties
    heat treatment
    fuzzy logic
    artificial intelligence
    technologie informatyczne
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    silumin
    właściwości mechaniczne
    obróbka cieplna
    sztuczna inteligencja
    Opis:
    The object of the experimental studies was to determine the mechanical properties of a hypoeutectic EN AC - 42100 (EN ACAlSi7Mg0,3) silumin alloy, where the said properties are changing as a result of subjecting the samples of different types to solution treatment. An important aspect of the studies was the use type of device for the heat treatment. As a basic parameter representing the mechanical properties, the tensile strength of the metal (Rm) was adopted.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4; 35-38
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improving Quality and Occupational Safety on Automated Casting Lines
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380123.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    quality management
    automation in foundry
    application of information technology
    modelling of production systems
    simulation of production systems
    work ergonomics
    przemysł odlewniczy
    zarządzanie jakością
    automatyzacja w odlewni
    zastosowanie technologii informatycznych
    modelowanie systemów produkcyjnych
    symulacja systemów produkcyjnych
    ergonomia pracy
    Opis:
    The paper presents a practical example of improving quality and occupational safety on automated casting lines. Working conditions on the line of box moulding with horizontal mould split were analysed due to low degree of automation at the stage of cores or filters installation as well as spheroidizing mortar dosing. A simulation analysis was carried out, which was related to the grounds of introducing an automatic mortar dispenser to the mould. To carry out the research, a simulation model of a line in universal Arena software for modelling and simulation of manufacturing systems by Rockwell Software Inc. was created. A simulation experiment was carried out on a model in order to determine basic parameters of the working system. Organization and working conditions in other sections of the line were also analysed, paying particular attention to quality, ergonomics and occupational safety. Ergonomics analysis was carried out on manual cores installation workplace and filters installation workplace, and changes to these workplaces were suggested in order to eliminate actions being unnecessary and onerous for employees.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 69-72
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Optimization of Organization of Workplaces in a Foundry
    Autorzy:
    Kukla, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/380728.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    application of information technology
    foundry industry
    automation in foundries
    robotics in foundries
    equipment effectiveness
    modelling of production systems
    simulation of production systems
    work ergonomics
    zastosowanie technologii informatycznych
    przemysł odlewniczy
    automatyzacja odlewni
    robotyka w odlewniach
    skuteczność urządzeń
    modelowanie systemów produkcyjnych
    symulacja systemów produkcyjnych
    ergonomia pracy
    Opis:
    The paper presents a practical example of improvement of foundry production systems in terms of post-finishing of nodular iron castings produced in the conditions of bulk production for automotive industry. The attention was paid to high labour-intensive efforts, which are difficult to be subjected to mechanization and automation. The times of actions related to grinding processing of castings in three grinding positions connected with a belt conveyor were estimated with the use of a time study method. A bottleneck as well as limiting factors were specified in a system. A number of improvements were proposed, aimed at improving work organization on the castings post-finishing line. An analysis of work ergonomics at the workplace was made in order to eliminate unnecessary and onerous for the employee actions. A model of production system using the Arena software, on which a simulation experiment was conducted, was drawn up in order to visualize the analysed phenomena. The effects of the project were shown on graphs comparing times, costs, work ergonomics and overall efficiency of production equipment indicator.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 3; 55-58
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-34 z 34

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies