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    Wyświetlanie 1-11 z 11
    Tytuł:
    Use of Reverse Engineering and Additive Printing in the Reconstruction of Gears
    Autorzy:
    Palka, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/2064788.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    3D printing
    design
    gears
    reconstruction
    reverse engineering
    Opis:
    Despite the very rapid technological development, the general concept of mechanical devices has not changed. Still, the most common element of these devices are gears, whose range of use is very wide. There are both technological and historical considerations for the reconstruction of gears and other elements. In particular, this applies to spare parts for technical facilities that are not available on the market or service costs are too high. Contemporary reconstruction is called Reverse Engineering, which offers tools that allow transformation of an existing object through a virtual model into the final real product. Modern production engineering is based on innovative CAD – Computer Aided Designed design methods and computer-aided manufacturing technologies, CAM – Computer Aided Manufacturing. The rapid development of 3D CAD systems has led to the development of solutions to obtain the designed object, already at the development stage. Such a solution is the Rapid Prototyping method, designed for fast, precise and repeatable production of machine components. Widespread use and growing interest in the use of additive printing influenced the development of this technology. The purpose of the article is to present the practical application of the Reverse Engineering method and 3D printing in the reconstruction of gears. The object of research is the real gear, which has been reconstructed using Reverse Engineering and 3D printing. The article presents the basic assumptions of the methods used and the methodology for conducting reconstruction work. FDM (Fused Deposition Modeling) technology was used for the research. The results obtained are a real example of the practical application of the presented methods. At the same time, they create great opportunities for their wider use.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 274--284
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Stoppages in the Process of Roadway Drivage Caused by Exceeding the Maximum Allowable Level of Methane Concentration
    Autorzy:
    Brodny, Jarosław
    Tutak, Magdalena
    Felka, Dariusz
    Dorota, Palka
    Powiązania:
    https://bibliotekanauki.pl/articles/2064253.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    methane hazard
    dog headings
    mining operations
    methaneometry
    process efficiency
    metaneometria
    wydajność procesu
    zagrożenie metanowe
    pomiar metanu
    Opis:
    Methane is one of the most dangerous gases occurring in mining production. Being inseparably connected with the rock mass, it presents a serious risk to occupational safety and reduces the effectiveness of mining production. A particularly high methane hazard occurs directly during exploitation in longwall headings and the drivage of roadways. Exceeding the maximum allowable level of its concentration in these headings makes it necessary to disconnect all machines until this concentration level is reduced. This leads to unscheduled downtimes of such machines, thus increasing the costs of their operation and decreasing their effectiveness. The paper demonstrates the results from the analysis of machine downtimes in the drivage of roadways, caused by excessive methane concentration levels. The analyses were based on the indications from the system for automatic monitoring of the ventilation parameters in this heading. The results obtained clearly demonstrated that exceeded values of methane concentration caused a series of unexpected downtimes in the drivage process. As a result, the process was disturbed and its effectiveness reduced. The presented analyses are one of the first to address the issue of how methane emissions affect machine downtimes. However, this phenomenon represents a major problem that needs to be addressed comprehensively in order to minimise the losses arising out of the necessary disruptions to the exploitation process.
    Źródło:
    New Trends in Production Engineering; 2020, 3, 1; 197--210
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling and Simulation of the Methane Risk in the Mining Production Process
    Autorzy:
    Palka, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/2064626.pdf
    Data publikacji:
    2021
    Wydawca:
    STE GROUP
    Tematy:
    numerical modeling and simulations
    mining production process
    process efficiency
    methane hazard
    hard coal mining
    Opis:
    The mining production process is of particular importance for the area of Upper Silesia, as well as a very significant impact on the economy of the entire country. One of the most common and most dangerous threats to this process is the methane hazard. It is related to the presence of methane in coal seams, which under appropriate conditions is a flammable and explosive gas. Events related to the methane hazard constitute a huge threat to the life and health of the crew as well as the infrastructure and equipment of excavations. Therefore, they have a huge impact on the efficiency of the entire mining production process. In order to ensure the safety and continuity of the production process, it is necessary to prevent the formation of dangerous methane concentrations in the area covered by the operation. One of the tools that can be used to assess the state of methane hazard are model studies supported by numerical simulation. Based on these studies, the article analyzes the distribution of methane concentration in the mining area. This area included an actual mining excavation in one of the hard coal mines. The model tests were carried out with the use of the finite volume method in the ANSYS Fluent software. The obtained results can be used for preventive measures and constitute an important source of information for the assessment of the methane hazard state.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 1--13
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prospects for development movement in the industry concept 4.0
    Autorzy:
    Palka, Dorota
    Ciukaj, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/2064894.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    maintenance
    operation
    industry 4.0
    ERP systems
    CMMS systems
    Opis:
    The aim of the article is to present the perspective of maintenance development in the context of the 4.0 industry concept. One of the factors that determine the safe and effective use of machines and devices is the properly maintained maintenance process. Correct performance of activities as part of this process requires the use of appropriate knowledge and experience from people implementing this process. Very important in this process is, above all, good organization of work and technical knowledge. The very rapid development of technology causes that teams dealing with the maintenance of traffic in enterprises must systematically acquire knowledge and optimize their activities. Effective exploitation of all types of devices is a set of rules, rules, procedures and actions, the main aspect of which is a human being. Knowledge resources should have appropriate substantive content adapted to the recipient. The article presents a modern solution supporting the maintenance process, taking into account the tools supporting the activities of human teams. The basic principles of maintenance in the enterprise covering machine monitoring systems, production management and management of information on the state of the machine park are discussed. There are also examples of the use of selected tools in the mining industry. Reference was also made to the prospects and directions of the development of maintenance in relation to the fourth industrial revolution.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 315--326
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Permeability of the Longwall Goaf Zones on the Location of an Area With Explosive Methane Concentration Levels
    Autorzy:
    Tutak, Magdalena
    Palka, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/2064793.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    methane hazards
    longwall
    mining operation
    longwall ventilation system
    goaf
    CFD
    Opis:
    One of the basic ventilation hazards and, at the same time most dangerous, in hard coal mines is the methane hazard. During the exploitation process using the longwall system with the breaking down of roof rocks, methane is released into mining excavations from both mined coal and the one left in goaves. Significant amounts of methane also flow from the underworked and overworked seams, through cracks and fissures formed in the rock mass. When accumulated at an explosive concentration level in goves and at an appropriate oxygen concentration level and the occurrence of a trigger (e.g. a spark or endogenous fire), methane may either explode or ignite. These are immensely dangerous phenomena. Therefore, the possibility of their occurrence should be limited. The article presents the results of the research aimed at determining the impact of the permeability of goaf zones on the distribution of methane and oxygen concentration levels in these goaves. The study was carried out for the longwall ventilated with the Y system. The model analysis was conducted, the results of which allowed the authors to determine these distributions. On their basis, both the location and size of the areas in which hazardous methane concentrations could occur were designated. The results are of great practical importance as they indicate areas in goaves where preventive measures should be implemented.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 238--247
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The concept of hard coal mine in the perspective of Industry 4.0
    Autorzy:
    Palka, Dorota
    Rizaoğlu, Tamer
    Powiązania:
    https://bibliotekanauki.pl/articles/2064861.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    analysis
    coal mine
    industry 4.0
    mining machine and devices
    new technology
    Opis:
    For the Polish economy, hard coal is the basic raw material for the production of electricity and heat, guaranteeing energy security. To ensure safe and effective work in underground mines, the most modern technical solutions are implemented. Innovative achievements of production automation are increasingly being used. Introduction of the Industry 4.0 concept elements is an opportunity for: improvement of coal exploitation processes, use of IT tools supporting decision-making processes and ensuring real-time process management. However, the specificity of the mining environment poses many barriers, for example limitations resulting from geology, extent and volume of excavations, device mobility and telecommunications. The article describes mining threats and limitations as well as the current technical condition of Polish mining. The latest trends in mining development are described in line with the ideas of the fourth industrial revolution. The main goal of the article is to analyze the feasibility of implementing Industry 4.0 concept solutions for underground mining. The analysis was performed with a tabular descriptive method, based on the conducted mining documentation, own observations, surveys and literature research. The indicated limitations and recommendations developed can serve as a guide to further scientific research and implementations in this area.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 327--335
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    3D Object Digitization Devices in Manufacturing Engineering Applications and Services
    Autorzy:
    Palka, Dorota
    Sobota, Marcin
    Buchwald, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2064755.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    digitization
    3D scanning
    mobile devices
    scanning methods
    modern technology
    Opis:
    The rapid development of CAD 3D systems has led to the development of solutions enabling the physical achievement of the designed object, already at the design stage. Such a solution is the rapid prototyping method, intended for fast, precise and repeatable production thanks to additive technology. The first basic step of this method is a 3D scan. It is a technique that analyzes a real object in order to collect data about its basic (geometric) and additional (e.g. color) features. The collected data is used to generate three-dimensional, virtual models. Scanning can be performed in various ways using different devices. The aim of the article is to review the available technologies for digitizing 3D objects and to compare them in the context of individual application areas. It presents selected tools and software that will economically and efficiently increase the range of applications of digitization methods in the production process and offering various services on the market.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 450--463
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role, importance and impact of the methane hazard on the safety and efficiency of mining production
    Autorzy:
    Palka, Dorota
    Brodny, Jarosław
    Tutak, Magdalena
    Nitoi, Dan
    Powiązania:
    https://bibliotekanauki.pl/articles/26073333.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    górniczy proces produkcyjny
    wydajność procesu
    górnictwo węgla kamiennego
    zagrożenie metanowe
    modelowanie i symulacja numeryczna
    mining production process
    process efficiency
    hard coal mining
    methane hazard
    numerical modeling and simulations
    Opis:
    Underground mining production is an extremely important process for the economy and carried out in very difficult and complex environmental conditions. The disturbance of the balance of this environment makes it also a very dangerous process. Due to the importance of coal, mainly as an energy raw material, the process of its exploitation is carried out all over the world. The specificity of its production is mainly determined by mining and geological conditions, which determine the method of operation and the selection of machines and devices for this process. One of the most dangerous natural hazards associated with this process are ventilation hazards, including methane hazard. The reason for this threat is methane, an odorless and colorless gas, which becomes a flammable and explosive gas under certain criteria. These features make this gas a huge threat to mining operations. Its huge amounts, contained in coal seams, are released into the mine atmosphere during the exploitation process, causing a very high threat to work safety. Events related to the occurrence of methane are most often the cause of mining disasters, in which people die and the technical and mining infrastructure is destroyed. The reason for the growing methane hazard is the increasingly difficult mining conditions, and mainly the increasing depth of mining, and thus also the increase in methane-bearing capacity of the seams. Taking into account the huge impact of methane hazard on the mining process, the article discusses its impact on the safety and efficiency of this process. The results of the literature review with regard to this risk are presented and the accident statistics are presented. On the basis of actual data, an analysis of interruptions in the exploitation process related to exceeding the permissible me-thane concentrations was carried out in one of the mines. The problem of limiting the production process due to these exceedances is an important factor reducing the efficiency of this process. The obtained results clearly indicate that the losses resulting from these breaks deteriorate the profitability of the entire process and affect the economic efficiency of the industry. In order to effectively counteract the dangerous phenomena related to the methane hazard and to improve the efficiency of the mining production process, solutions were proposed to improve this state and the directions for further research were proposed.
    Źródło:
    Production Engineering Archives; 2022, 28, 4; 390--397
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A way of supporting the servicing of production machines using reverse engineering and 3D printing techniques
    Sposób wspomagania serwisowania maszyn z wykorzystaniem inżynierii odwrotnej i techniki druku 3D
    Autorzy:
    Loska, Andrzej
    Palka, Dorota
    Bień, Alicja
    Substelny, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/31232995.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
    Tematy:
    reverse engineering
    3D printing
    CAM computer support
    machine servicing
    machine operation
    inżynieria odwrotna
    druk 3D
    wspomaganie komputerowe CAM
    serwisowanie maszyn
    eksploatacja maszyn
    Opis:
    The use of machines and devices causes their components to wear out, which leads to damage. The easiest and fastest method of repair is to replace this element with a new one. The problem arises when the desired element is not available on the market, technical documentation is unavailable or the costs of acquiring a new element are too high. In such a situation, engineering reconstruction, also known as reverse engineering, is used, which allows for the reconstruction of technical documentation and the production of a new product thanks to additive technology. The article presents the process of reverse engineering and the types of additive manufacturing technology. The aim of the article is to present the possibilities of using the reverse engineering method and 3D printing in the reconstruction of sample machine parts. The work uses the FDM (Fused Deposition Modeling) spatial production technology. The relevance of the article is confirmed by the possibility of its practical use in the field of machine servicing support.
    Eksploatacja maszyn i urządzeń powoduje, że ich podzespoły zużywają się, a to prowadzi do uszkodzeń. Najprostszą i najszybszą metodą naprawy jest wymiana tego elementu na nowy. Problem pojawia się, gdy pożądany element nie jest dostępny na rynku, niedostępna jest dokumentacja techniczna lub koszty pozyskania nowego elementu są zbyt wysokie. W takiej sytuacji zastosowanie znajduje rekonstrukcja inżynierska nazywana również inżynierią odwrotną, która pozwala na odtworzenie dokumentacji technicznej oraz wykonanie nowego produktu dzięki technologii addytywnej. W artykule przedstawiono proces przebiegu inżynierii odwrotnej oraz rodzaje technologii wytwarzania przyrostowego. Celem artykułu jest przedstawianie możliwości zastosowania metody inżynierii odwrotnej oraz druku przestrzennego w rekonstrukcji przykładowych części maszyn. W pracy wykorzystano technologię wytwarzania przestrzennego FDM (Fused Deposition Modeling). Zasadność artykułu potwierdza możliwość jego praktycznego wykorzystania w zakresie wspomagania serwisowania maszyn.
    Źródło:
    Technologia i Automatyzacja Montażu; 2022, 1; 28-36
    2450-8217
    Pojawia się w:
    Technologia i Automatyzacja Montażu
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dorota Kubacka-Jasiecka, Małgorzata Kuleta (red.), W kręgu psychologicznej problematyki tożsamości, Kraków: Wydawnictwo Uniwersytetu Jagiellońskiego 2008
    Autorzy:
    Pałka, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/2128552.pdf
    Data publikacji:
    2019-03-28
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
    Źródło:
    Roczniki Psychologiczne; 2009, 12, 2; 183-185
    1507-7888
    Pojawia się w:
    Roczniki Psychologiczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zabytkowe tekstylia w Muzeum Diecezjalnym w Siedlcach w świetle badań reinwentaryzacyjnych
    Autorzy:
    Pikula-Kuziak, Dorota
    Powiązania:
    https://bibliotekanauki.pl/articles/2088340.pdf
    Data publikacji:
    2022-06-29
    Wydawca:
    Katolicki Uniwersytet Lubelski Jana Pawła II
    Tematy:
    ‘Splendor Podlasia’
    Diocesan Museum in Siedlce
    inventory
    antique church textiles
    Bishop Franciszek Kobielski
    chasuble
    mitre
    pall
    Splendor Podlasia
    Muzeum Diecezjalne w Siedlcach
    inwentaryzacja
    zabytkowe tekstylia kościelne
    bp Franciszek Kobielski
    ornat
    mitra
    palka
    Opis:
    Prace reinwentaryzacyjne w Muzeum Diecezjalnym w Siedlcach, podjęte w 2020 roku, dofinansowane przez Narodowe Centrum Kultury w ramach programu „Kultura w sieci”, objęły zabytkowe tekstylia szyte z tkanin XV-XX-wiecznych gromadzone w magazynie od wielu lat. Ujawniły ponad 140 obiektów (ornatów, kap, mitr, dalmatyk, stuł, manipularzy, palek kielichowych, burs), z których tylko znikoma część była już wcześniej skatalogowana. Pozostałe są w dużej mierze nieznanej proweniencji, zniszczone, często po wielokroć reperowane i przeszywane. Tylko nieliczne z nich odnajdujemy w katalogach zabytków sztuki w Polsce czy w kartach inwentaryzacyjnych gromadzonych w biurze Wojewódzkiego Urzędu Ochrony Zabytków. W ramach prac reinwentaryzacyjnych objęto staranną dokumentacją merytoryczną i fotograficzną wszystkie zgromadzone w zbiorach Muzeum Diecezjalnego zabytkowe paramenty, a także umieszczono ponad 150 z nich na wystawie online Splendor Podlasia (https://splendorpodlasia.pl), by pozwolić poznać ów interesujący zasób szerokiemu gronu odbiorców. Treść artykułu dotyczy także podjęcia badań nad historią dwu najstarszych, późnogotyckich tkanin, z których uszyto ornaty, oraz powtórnego połączenia w całość, przez lata rozproszonego, uroczystego kompletu (sacra paramenta i sacra indumenta) bp. Franciszka Kobielskiego (1679-1755).
    Reinventory works at the Diocesan Museum in Siedlce in 2020, subsidised by the National Centre for Culture as part of the programme ‘Kultura w sieci’[‘Culture on the Web’], included historic textiles sewn from 15th- through 20th-century fabrics that had been stored in a warehouse for many years. They revealed more than 140 objects (chasubles, capes, mitres, dalmatics, stoles, maniples, palls and burses), only a fraction of which had been catalogued. Other items are of largely unknown provenance, often damaged and having been repaired and re-stitched many times. Only a few of them can be found in the catalogues of art monuments in Poland or on inventory cards in the office of the Provincial Office for Monument Protection. As part of the reinventory work, all the historical paraments gathered in the collection of the Diocesan Museum were carefully documented in terms of content and visual records, and more than 150 of them were added to the online exhibition ‘Splendor Podlasia’[‘Splendour of Podlasie’] (www.splendorpodlasia.pl) so as to bring this interesting resource to a larger audience. The article also deals with research into the history of the two oldest, late-Gothic fabrics from which the chasubles were sewn and the reuniting of the ceremonial set (sacra paramenta and sacra indumenta) of Bishop Franciszek Kobielski (1679–1755), which had been scattered for many years.
    Źródło:
    Archiwa, Biblioteki i Muzea Kościelne; 2022, 118; 275-289
    0518-3766
    2545-3491
    Pojawia się w:
    Archiwa, Biblioteki i Muzea Kościelne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

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