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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:
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:
Zastosowanie badań nieniszczących w technice lotniczej
Non-destructive testing technology application in aviation
Autorzy:
Krysztofik, J.
Manaj, W.
Powiązania:
https://bibliotekanauki.pl/articles/213812.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
zastosowania
badania nieniszczące
technika lotnicza
non-destructive testing
technology application
aviation
Opis:
Z uwagi na rosnące zapotrzebowanie oceny konstrukcji technicznych bez konieczności ich zniszczenia w szerokim zakresie rozwija się dziedzina badań nieniszczących. Tradycyjnie stosowane metody badań: wizualna, penetracyjna, magnetyczno-proszkowa, ultradźwiękowa i radiograficzna są rozwijane w specjalizowane techniki np. badanie ultradźwiękowe głowicami mozaikowymi lub nowe metody detekcji wad takie jak np. metoda akustyczna lub termograficzna. Kontrole nieniszczące są stosowane ze względu na bezpieczeństwo użytkowania elementów lotniczych oraz ekonomiczne konsekwencje odstawienia konstrukcji od użytku. Kontrole prowadzone są zarówno na etapie wytwarzania jak i eksploatacji. Nie bez znaczenia dla doboru stosowanych metod jest także szeroki zakres materiałów stosowanych w konstrukcjach lotniczych. W artykule przedstawiono wybrane metody oceny jakości materiałów konstrukcji lotniczych wraz z przykładami wykonanych badań.
Due to the increasing demand of engineering structures assessment without destroying them the field of non-destructive testing is developing in a wide range. Traditionally methods of research are: visual, dye penetrant, magnetic particle, ultrasonic and radiographic are developed for specialized techniques such as phased array ultrasonic testing or new technique of defects detection such as acoustic or thetmographic method. Non-destructive inspections are used due to the safety of the air elements and economic consequences of the structures retraction from service. Inspections are carried out both at the production stage and exploitation adjusted to specific materials. The article presents some quality assessment methods of aircraft structures with examples of research.
Źródło:
Prace Instytutu Lotnictwa; 2011, 2 (211); 120-129
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer Simulation of Cast Iron Flow in Castability Trials
Autorzy:
Popielarski, P.
Hajkowski, J.
Sika, R.
Ignaszak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/355454.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
application of information technology to the foundry industry
castings defects
cast iron
castability trial
Opis:
The paper includes validation studies of the flow module of the NovaFlow&Solid simulation code. Experiments of ductile iron and gray iron casting in a spiral test of castability were carried out. Casting experiments were then carried out in industrial conditions in the Ferrex Foundry in Poznań and the results are the castability spiral length and local cast iron rate during mould cavity pouring. Simulation tests using NovaFlow&Solid Control Volume code were made. The technological castability test was used to determine thermal-physical data through simplified inversion problem. Influence of physical parameters in the database of simulation code on the spiral length obtained as the result of simulation was analyzed. It was found that critical fraction of capillary flow CLF down has the biggest impact on cast iron castability in the simulation code. The simulations resulted in defining parameters of gray iron GJL 250 and ductile iron GJS-400-15. For the parameters set, the length of castability spiral in simulations was in accordance with casting experiments.
Źródło:
Archives of Metallurgy and Materials; 2019, 64, 4; 1433-1439
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Prediction of Moulding Sand Moisture Content Based on the Knowledge Acquired by Data Mining Techniques
Autorzy:
Regulski, K.
Jakubski, J.
Opaliński, A.
Brzeziński, M.
Głowacki, M.
Powiązania:
https://bibliotekanauki.pl/articles/355982.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
application of information technology to the foundry industry
moulding sands
decision trees
ANOVA
data mining
Opis:
The subject of the study is the improvement of the quality of moulding sand preparation. An exploration research performed on the data concerning moulding sand quality parameters was described. The aim of the research was to find relationships between various factors determining the properties of moulding sands and, based on the results obtained, build models predicting the sand moisture content with the induction of classification and regression trees. A two-match prediction approach was demonstrated and its effectiveness in evaluating the moulding sand moisture content was discussed. The knowledge in the form of rules acquired in this way can be used in the creation of knowledge bases for systems supporting decisions in the diagnostics of the moulding sand rebonding process. Formalized knowledge also facilitates further processing of the measurement data.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1709-1714
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
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:
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:
Formalization of Technological Knowledge in the Field of Metallurgy Using Document Classification Tools Supported with Semantic Techniques
Autorzy:
Regulski, K.
Powiązania:
https://bibliotekanauki.pl/articles/353849.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
application of information technology to the foundry industry
document classification
semantic techniques
knowledge formalization
text mining
Opis:
The process of knowledge formalization is an essential part of decision support systems development. Creating a technological knowledge base in the field of metallurgy encountered problems in acquisition and codifying reusable computer artifacts based on text documents. The aim of the work was to adapt the algorithms for classification of documents and to develop a method of semantic integration of a created repository. Author used artificial intelligence tools: latent semantic indexing, rough sets, association rules learning and ontologies as a tool for integration. The developed methodology allowed for the creation of semantic knowledge base on the basis of documents in natural language in the field of metallurgy.
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2A; 715-720
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
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:
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:
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:
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:
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:
Developments and applications in nuclear technologies, a challenge for nuclear scientists – NUTECH-2017
Autorzy:
Lankosz, M.
Powiązania:
https://bibliotekanauki.pl/articles/148586.pdf
Data publikacji:
2018
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
development
application
nuclear technology
nuclear scientist
Źródło:
Nukleonika; 2018, 63, 3; 3
0029-5922
1508-5791
Pojawia się w:
Nukleonika
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:
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:
Sulphur concrete’s technology and its application to the building industry
Autorzy:
Ciak, N.
Harasymiuk, J.
Powiązania:
https://bibliotekanauki.pl/articles/298071.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
technology
sulphur concrete
properties
application
goods modified
extenders
Opis:
This article is a scientific – review piece of work which purpose is to popularize the common knowledge of sulphur concrete – the material that has become more and more popular not only in countries with established market economy. In the article there are presented key phases of scientific studies concerning technology of the sulphur concrete, concrete modified with sulphur and its application in building industry. There is also presented methodology of sample preparations, technology of production and its main technical properties.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2013, 16(4); 323-331
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a Mobile Application to Study Sewing Techniques for Manufacturing Fur and Leather Clothes
Autorzy:
Zakharkevich, Oksana
Paraska, Olga
Koshevko, Julia
Shvets, Galina
Shvets, Alexander
Zhylenko, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/24200959.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
mobile application
leather
fur
sewing techniques
technology sequence
Opis:
The global COVID-19 crisis has led to the international isolation of educational institutions, which have had to adapt to changing ways of presenting the information. Mobile applications are the future of the education sector, leading toward its development. The study aims to develop a mobile application to support learning the peculiarities of leather and fur garment manufacturing sewing techniques. The mobile app "TechLab" was developed by using MIT App Inventor. The article proves the effectiveness of its use in the educational space based on social surveys among teachers and students at different levels of education.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 2; 1--10
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
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:
Zastosowanie stali dupleks w przemyśle spożywczym
Application of duplex steel in the food industry
Autorzy:
Ciechacki, K.
Giętka, T.
Chudziński, M.
Powiązania:
https://bibliotekanauki.pl/articles/2072571.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
stal dupleks
techniki wytwarzania
zastosowanie
duplex steel
technology
application
Opis:
Stale dupleks, znajdujące zastosowanie w najbardziej agresywnych środowiskach przy produkcji żywności i leków, wykazują pewne trudności w przetwarzaniu (w porównaniu z popularnymi stalami austenitycznymi). Opisano problemy i utrudnienia występujące przy przetwarzaniu stali dupleks. Podano praktyczne wskazówki i wytyczne dotyczące cięcia, przeróbki plastycznej, obróbki mechanicznej oraz spawania stali dupleks.
Duplex steels, used in the most aggressive environments in food and medicines production, reveal some difficulties during processing (in comparison with typical austenitic steels). Issues and obstacles occurring during duplex steel processing are described in the paper. Practical suggestions and guidelines for cutting, forming, mechanical treatment and welding of duplex steels are given.
Źródło:
Inżynieria i Aparatura Chemiczna; 2013, 2; 122-124
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 72

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