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    Wyświetlanie 1-7 z 7
    Tytuł:
    Recent developments in abrasive hybrid manufacturing processes
    Autorzy:
    Ruszaj, A.
    Skoczypiec, S.
    Wyszyński, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/407233.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    hybrid manufacturing process
    electrochemical
    electrodischarge
    abrasive
    machining
    grinding
    Opis:
    Recent dynamic development of abrasive hybrid manufacturing processes results from application of a new difficult for machining materials and improvement of technological indicators of manufacturing processes already applied in practice. This tendency also occurs in abrasive machining processes which are often supported by ultrasonic vibrations, electrochemical dissolution or by electrical discharges. In the paper we present the review of new results of investigations and new practical applications of Abrasive Electrodischarge (AEDM) and Electrochemical (AECM) Machining.
    Źródło:
    Management and Production Engineering Review; 2017, 8, 2; 81-90
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A hybrid FSIR-TOPSIS approach for selecting of manufacturing levers
    Autorzy:
    Ajalli, Mehdi
    Mozaffari, Mohammad Mahdi
    Asgharisarem, Ali
    Powiązania:
    https://bibliotekanauki.pl/articles/406780.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    strategy
    Miltenburg’s worksheet
    Fuzzy Superiority & Inferiority Ranking
    FSIR
    TOPSIS
    manufacturing levers
    manufacturing outputs
    Opis:
    One of the strategic decisions of any organization is decision making about manufacturing strategy. Manufacturing strategy is a perspective distinguishing a company from other present companies in that industry and creates a kind of stability in decisions and gives a special direction to organizational activities. SIR (SUPERIORITY& INFERIORITY Ranking) method and their applications have attracted much attention from academics and practitioners. FSIR proves to be a very useful method for multiple criteria decision making in fuzzy environments, which has found substantial applications in recent years. This paper proposes a FSIR approach based methodology for TOPSIS, which using MILTENBURG Strategy Worksheet in order to analyzing of the status of strategy of the Gas Company. Then formulates the priorities of a fuzzy pair-wise comparison matrix as a linear programming and derives crisp priorities from fuzzy pair-wise comparison matrices Manufacturing levers (Alternatives) are examined and analyzed as the main elements of manufacturing strategy. Also, manufacturing outputs (Criteria are identified that are competitive priorities of production of any organization. Next, using a hybrid approach of FSIR and TOPSIS, alternatives (manufacturing levers) are ranked. So dealing with the selected manufacturing levers and promoting them, an organization makes customers satisfied with the least cost and time.
    Źródło:
    Management and Production Engineering Review; 2019, 10, 2; 69--82
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid bearing development for high-speed turbomachinery in distributed energy systems
    Autorzy:
    Tkacz, E.
    Kozanecki, Z.
    Łagodziński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/175541.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    oil-free bearings
    organic Rankine cycle turbomachinery
    design and manufacturing
    Opis:
    In the paper authors undertake the design of hydrostatic bearings and hybrid bearings for a specific application – hermetic high–speed turbogenerators for the electric power generation. The most common hydrostatic bearings are usually oil lubricated. On the contrary, the considered here machines are dedicated for the combined heat and power (CHP) production in organic Rankine cycle (ORC) systems and so the hydrostatic bearings use an organic, oil-free working fluid as the lubricant. The reader will acquire an insight into the special characteristics of hydrostatic bearings. Moreover, a new type of bearings, a hybrid bearing, is introduced, which combine both, hydrostatic and hydrodynamic effects. The designed bearings have been manufactured and their good performance confirmed during tests on a real machine.
    Źródło:
    Transactions of the Institute of Fluid-Flow Machinery; 2016, 131; 161-172
    0079-3205
    Pojawia się w:
    Transactions of the Institute of Fluid-Flow Machinery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of agent cooperation by means of DES supervision to manufacturing system
    Autorzy:
    Čapkovič, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/229948.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    agents
    control
    cooperation
    discrete event systems
    continuous systems
    hybrid Petri nets
    supervisor
    synthesis
    Opis:
    The supervision of complex manufacturing systems is handled in this paper. Production lines of manufacturing systems are understood here to be hybrid agents. Such an agent expresses continuous material flow together with a set of imperative discrete operations. In other words, the hybrid agent makes a cooperation of continuous and discrete event devices possible. The results are applied to complex continuous manufacturing system. First Order Hybrid Petri Nets (FOHPN) are utilized in order to model the elementary autonomous hybrid agents. The cooperation of hybrid agents is based on the DES (discrete-event systems) control theory. It is realized by means of DES supervision methods and the agent negotiation is based on place/transition Petri nets (P/T PN). The proposed approach is illustrated in details on the cooperation of hybrid production lines in the real complex manufacturing systems recycling waste plastics into plastic bags. The usefulness and applicability of the approach consists especially in the fact that the procedures in analytical terms can be employed. In such a way the approach turns lucid also in complicated cases.
    Źródło:
    Archives of Control Sciences; 2011, 21, 4; 395-417
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative simulation study of production scheduling in the hybrid and the parallel flow
    Autorzy:
    Varela, M. L. R.
    Trojanowska, J.
    Carmo-Silva, S.
    Costa, N. M. L.
    Machado, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/407017.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    approach for supporting manufacturing scheduling decision making
    heuristics
    hybrid flow shop
    parallel flow shops
    makespan
    Opis:
    Scheduling is one of the most important decisions in production control. An approach is proposed for supporting users to solve scheduling problems, by choosing the combination of physical manufacturing system configuration and the material handling system settings. The approach considers two alternative manufacturing scheduling configurations in a two stage product oriented manufacturing system, exploring the hybrid flow shop (HFS) and the parallel flow shop (PFS) environments. For illustrating the application of the proposed approach an industrial case from the automotive components industry is studied. The main aim of this research to compare results of study of production scheduling in the hybrid and the parallel flow, taking into account the makespan minimization criterion. Thus the HFS and the PFS performance is compared and analyzed, mainly in terms of the makespan, as the transportation times vary. The study shows that the performance HFS is clearly better when the work stations’ processing times are unbalanced, either in nature or as a consequence of the addition of transport times just to one of the work station processing time but loses advantage, becoming worse than the performance of the PFS configuration when the work stations’ processing times are balanced, either in nature or as a consequence of the addition of transport times added on the work stations’ processing times. This means that physical layout configurations along with the way transport time are including the work stations’ processing times should be carefully taken into consideration due to its influence on the performance reached by both HFS and PFS configurations.
    Źródło:
    Management and Production Engineering Review; 2017, 8, 2; 69-80
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of a novel technology for rapidly rotating systems for medical technology
    Autorzy:
    Klaeger, U.
    Schmucker, U.
    Galazky, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/406893.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    laboratory centrifuges
    carbon fiber rotors
    composites
    lightweight
    hybrid systems
    additive manufacturing
    medical technology
    Opis:
    Rapidly rotating systems such as centrifuges are widely used in medicine and laboratories to efficiently separate different constituents of liquids. Rotors, which hold sample containers, are an essential part of centrifuges. Since they are subjected to extreme mechanical loads, rotors are one of a centrifuge’s core safety components. Their deficits served as the point of departure for the development of a novel manufacturing technology, which is based on carbon fiber-reinforced polymers (CFRP). Its supporting structure is entirely in the loading plane, thus enabling the rotor to absorb higher centrifugal forces while requiring the same amount of material. The new design concept for the load-bearing structure includes a geodesically molded annular support member. It transmits forces better than present products and increases rigidity. In order to eliminate the known problems with obtaining the necessary manufacturing quality of hollow fiber composite bodies, the authors developed the process of centrifugal infusion. Their proposed solution is based on generating higher gravitation forces, thus effectively eliminating detrimental gas pockets and simultaneously optimizing surface quality and impregnation.
    Źródło:
    Management and Production Engineering Review; 2013, 4, 4; 28-34
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An optimum scheduling method for multi-option product flows through production lineswithout intermediate buffers
    Autorzy:
    Magiera, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/406718.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Flexible Manufacturing Systems
    integer programming
    linear programming
    no-wait scheduling
    hybrid flow shop
    makespan
    decision making
    Opis:
    The presented method is constructed for optimum scheduling in production lines with parallel machines and without intermediate buffers. The production system simultaneously performs operations on various types of products. Multi-option products were taken into account – products of a given type may differ in terms of details. This allows providing for individual requirements of the customers. The one-level approach to scheduling for multioption products is presented. The integer programming is used in the method – optimum solutions are determined: the shortest schedules for multi-option products. Due to the lack of the intermediate buffers, two possibilities are taken into account: no-wait scheduling, possibility of the machines being blocked by products awaiting further operations. These two types of organizing the flow through the production line were compared using computational experiments, the results of which are presented in the paper.
    Źródło:
    Management and Production Engineering Review; 2020, 11, 1; 86-94
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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