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    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:
    Opening new opportunities for aeronautic, naval and train large components realization with hybrid and twin manufacturing
    Autorzy:
    Rauch, Matthieu
    Hascoet, Jean-Yves
    Powiązania:
    https://bibliotekanauki.pl/articles/2171769.pdf
    Data publikacji:
    2022
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    additive manufacturing
    hybrid manufacturing
    twin manufacturing
    Opis:
    Additive Manufacturing (AM) consist in producing parts by depositing material in successive layers. These step-by-step processes proposes new innovative directions for high value components: complex geometries are accessible without strong efforts (such as hollow or lattice structures which dramatically reduce the component weight while keeping their at least similar mechanical properties), assemblies can be simplified, spare parts can be realized at demand... Hence, AM has benefitted from large research efforts over the last decade, almost all existing industrial sectors have benefitted from them. This paper introduces some opportunities and the associated challenges attached to Additive Manufacturing, to produce large metallic components for naval aeronautics and train industries. In particular, two innovative approaches are discussed in details: hybrid manufacturing and twin manufacturing. Hybrid manufacturing consists in integrating AM together with other processes for the realization of components, with the objective to benefit from the interests of each process while avoiding its drawbacks. Hence, AM can realize complex geometries or offer low buy-to-fly ratios while high speed machining generates very good surface properties (position, roughness). Processes can be carried out sequentially or simultaneously on the features to manufacture and finding the optimal manufacturing work plan can be challenging. The paper introduces some hybrid approaches developed in the laboratory. Twin manufacturing uses models and multiphysics simulation methods to create a digital clone of the process implementation within the manufacturing environment. Manufacturing preparation and optimization can be carried in the virtual workshop where various configurations and choices can be tested before being selected. To enhance its accuracy, the digital twin can also be fed by monitoring data captured during the process. Several digital twins developed in the laboratory are provided. The paper is illustrated with several proof-of-concept parts made with SLM, LMD, WAAM and hybrid approaches in the laboratory. Among them, a hollow propellers that has the same hydrodynamics efficiency for a reduced weight for the naval industry, an aircraft structural panel that demonstrates simplified assemblies increased performance/mass ratio, a train component that shows the ability to produce structural parts at demand.
    Źródło:
    Journal of Machine Engineering; 2022, 22, 4; 5--20
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid additive and subtractive manufacturing processes and systems: a review
    Autorzy:
    Grzesik, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/99525.pdf
    Data publikacji:
    2018
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    hybrid manufacturing
    CNC machining
    additive machining
    laser cladding
    repair technology
    Opis:
    This review paper highlights the hybrid manufacturing processes which integrate the additive and subtractive processes performing on one hybrid platform consisting of the LMD (laser metal deposition) unit and CNC machine tools. In particular, some important rules and advantages as well as technological potentials of the integration of different AM technique and finishing CNC machining operations are discussed and overviewed. Some representative examples such as formation of difficult features around the part periphery, deposition of functional layers and coatings and repair of high-value parts in aerospace industry are provided. Some conclusions and future trends in the implementation of hybrid processes are outlined.
    Źródło:
    Journal of Machine Engineering; 2018, 18, 4; 5-24
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania naprężeń w warstwie wierzchniej części kształtowanych w sposób hybrydowy
    Research on stresses in the top layer of parts shaped in a hybrid technology
    Autorzy:
    Dudzińska, S.
    Grochała, D.
    Bachtiak-Radka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/316609.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    warstwa wierzchnia
    naprężenia własne
    hybrydowe technologie
    metody dyfrakcji
    surface layer
    residual stress
    hybrid manufacturing
    diffraction methods
    Opis:
    W artykule omówiony został aspekt naprężęń w warstwie wierzchniej części kształtowanych w sposób hybrydowy, gdzie elementy są najpierw frezowane, a następnie nagniatane. Naprężenia w warstwie wierzchniej odgrywają bardzo ważną rolę, ponieważ są odpowiedzialne m.in. za rozwój pęknięć, korozję i kawitację. Charakteryzacja i badania naprężeń w warstwie wierzchniej umożliwiają predykcję zachowań części podczas eksploatacji. Podczas prowadzonych badań potwierdzono wprowadzenie korzystnych, ściskających naprężeń w warstwie wierzchniej. Dla różnych średnic kulek nagniatających odnotowano istotne różnice wartości naprężeń wywołane zmienną wartością nacisków przy tej samej wartości siły nagniatania Fn.
    In this paper was presented the aspect of stress in the top layer part shaped in a hybrid technology, where the elements are first milled and then burnished. Stresses in the surface layer play a very important role because they are responsible, among others, for the development of cracks, corrosion and cavitation. Characterization and stress research in the surface layer allow prediction of parts behavior exploitation. During the research was confirmed the being of positive, compressive stresses in the surface layer. For the different diameters of the burnishing balls there were significant differences in stress values due to the variable pressure value at the same value of the burnishing force Fn.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2018, 19, 9; 129-132
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Artificial intelligence-based hybrid forecasting models for manufacturing systems
    Autorzy:
    Rosienkiewicz, Maria
    Powiązania:
    https://bibliotekanauki.pl/articles/1841698.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    artificial neural network
    support vector machine
    extreme learning machine
    hybrid forecasting
    production planning
    maintenance
    quality control
    Opis:
    The paper addresses the problem of forecasting in manufacturing systems. The main aim of the research is to propose new hybrid forecasting models combining artificial intelligencebased methods with traditional techniques based on time series – namely: Hybrid econometric model, Hybrid artificial neural network model, Hybrid support vector machine model and Hybrid extreme learning machine model. The study focuses on solving the problem of limited access to independent variables. Empirical verification of the proposed models is built upon real data from the three manufacturing system areas – production planning, maintenance and quality control. Moreover, in the paper, an algorithm for the forecasting accuracy assessment and optimal method selection for industrial companies is introduced. It can serve not only as an efficient and costless tool for advanced manufacturing companies willing to select the right forecasting method for their particular needs but also as an approach supporting the initial steps of transformation towards smart factory and Industry 4.0 implementation.
    Źródło:
    Eksploatacja i Niezawodność; 2021, 23, 2; 263-277
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Novel Method for Manufacturing Polymer/Metal Hybrid Structures
    Autorzy:
    Altan, M.
    Yavuz, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/1187217.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.41.+e
    68.47.De
    Opis:
    In this study, a method for manufacturing polymer/metal hybrid structure is presented in which traditional plastic injection machine was converted to plastic injection forming (PIF). In this method, deforming of the metal and adhering the metal to the polymer is done in one step. In the experimental study, a special mold within rectangular cavity was used during PIF process. Aluminum plates of different thicknesses were used as the metal parts of the structure. The injected polymers were pure polystyrene and elastomer-added polystyrene. The deformability of the Al plates was examined under different injection pressures. In order to provide adhesion between metal and polymer, an adhesive of elastomeric nature was applied on the metal plate prior to injection molding. Bending test was applied to determine the flexural strength and maximum deflection of the polymer/metal hybrid structures. The obtained results were satisfactorily acceptable in improving the method for designing and manufacturing polymer/metal hybrid structures in one step.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 639-641
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics
    Autorzy:
    Dobrzański, L. A.
    Dobrzański, L. B.
    Dobrzańska-Danikiewicz, A. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818519.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    powder engineering
    manufacturing of powder products
    hybrid technologies using powders
    additive manufacturing technologies using powders
    dendrological matrix of the technologies potential and attractiveness
    holistic augmented Industry 4.0 model
    inżynieria proszkowa
    produkcja wyrobów proszkowych
    technologie hybrydowe z wykorzystaniem proszków
    technologie wytwarzania przyrostowego z wykorzystaniem proszków
    Opis:
    Purpose: The paper is a comprehensive review of the literature on additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics. Design/methodology/approach: Extensive literature studies on conventional powder engineering technologies have been carried out. By using knowledge engineering methods, development perspectives of individual technologies were indicated. Findings: The additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics as the advanced digital production (ADP) technologies are located in the two-quarters of the dendrological matrix of technologies "wide-stretching oak" and "rooted dwarf mountain pine" respectively. It proves their highest possible potential and attractiveness, as well as their fully exploited attractiveness or substantial development opportunities in this respect. Originality/value: According to augmented holistic Industry 4.0 model, many materials processing technologies and among them additive and hybrid technologies for products manufacturing using powders of metals, their alloys and ceramics are becoming very important among product manufacturing technologies. They are an essential part not only of powder engineering but also of the manufacturing development according to the concept of Industry 4.0.
    Źródło:
    Archives of Materials Science and Engineering; 2020, 102, 2; 59--85
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wytwarzanie hybrydowych kompozytów poliestrowych z udziałem recyklatów
    Manufacturing of hybrid polyester composites with recycled participation
    Autorzy:
    Bryll, K.
    Gawdzińska, K.
    Pijanowski, M.
    Pawłowska, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/278796.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
    Tematy:
    kompozyty
    recyklaty
    pianka poliuretanowa
    włókno szklane
    composites
    recyclates
    hybrid
    glass fibre
    polyurethane foam
    Opis:
    Dążenie do zmniejszenia masy jest jednym z najważniejszych czynników w procesie projektowania jednostek morskich oraz innych środków transportu. Niższa masa konstrukcyjna umożliwia zastosowanie bardziej ekonomicznego systemu napędowego, a tym samym zmniejszenie kosztów produkcji i eksploatacji, jak również wpływa korzystnie na środowisko naturalne. Jednym ze sposobów zmniejszenia masy konstrukcji jest zastosowanie materiałów kompozytowych, a wykorzystanie na ich składowe recyklatów podnosi tylko ich atrakcyjność ze względu na ekonomiczność i ekologię. W niniejszej pracy przedstawiono najważniejsze problemy związane z wytwarzaniem kompozytów poliestrowych z udziałem recyklatów. Scharakteryzowano technologię wytwarzania tych materiałów. Celem pracy było opisanie wpływu struktury, dodatków i rodzaju fazy wzmacniającej na efekt formowania. Wytworzono kompozyt, o osnowie z żywicy poliestrowej zawierający recyklatową piankę poliuretanową oraz hybrydowy kompozyt o osnowie z żywicy poliestrowej wzmacniany recyklatową pianką poliuretanową i włóknem szklanym. Zaprezentowano również właściwości fizyko-chemiczne wytwarzanego materiału tj. gęstość, nasiąkliwość, udarność oraz wytrzymałość na rozciąganie.
    Attempts to reduce product weight will probably never stop as weight is one of the most important factors in the process of designing seagoing ships, road vehicles and aircraft. Lower construction weight of vehicles enables the application of a smaller propulsion system, and thereby the reduction of production and operating costs, as well as limitation of the environmental impact of these vehicles and other structures. One of the ways to reduce the weight of structures and vehicles is the application of composite materials. This work addresses major problems associated with the production of recycled polyester composites. Besides an outline of the manufacturing process of these materials, this study discusses the test results concerning issues associated with the production of composites, i.e. influence of the structure, additives and the type of reinforcing phase on the composite forming effect. The tests aimed at experimentally made composites with polyester resin matrix containing recycled polyurethane foam and a hybrid composite with polyester resin reinforced with recycled polyurethane foam and glass fibre. Besides, physico-chemical properties of the produced material are presented, including density, absorbability, impact resistance and tensile strength.
    Źródło:
    Przetwórstwo Tworzyw; 2017, T. 23, Nr 4 (178), 4 (178); 266-271
    1429-0472
    Pojawia się w:
    Przetwórstwo Tworzyw
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of parameters of manufacturing hybrid flame retardant additives containing graphite on their effectiveness
    Wpływ parametrów wytwarzania hybrydowych, zawierających grafit uniepalniaczy na efektywność ich działania
    Autorzy:
    Jankowski, P.
    Kijowska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/947444.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    hybrid flame retardant additives
    expandable graphite
    melamine cyanurate
    flammability
    polystyrene
    polyester resin
    epoxy resin
    hybrydowe uniepalniacze
    grafit ekspandujący
    cyjanuran melaminy
    palność
    polistyren
    żywica poliestrowa
    żywica epoksydowa
    Opis:
    Syntheses of hybrid flame retardant (HFR) additives were done on a semi-industrial scale. HFRs were obtained by in situ synthesis of melamine cyanurate in the presence of expandable graphite. HFRs have been used to reduce the flammability of selected polymers: polyester, epoxide, polystyrene. Compositions characterized by high oxygen indexes (in the case of the polyester compositions – 39.8 %) and improved horizontal FH-1 and vertical V-0 flammability parameters were obtained. The influence of the production parameters (including methods and parameters of drying), the grain size and expansion of the received HFRs on their effectiveness in the reduced flammability of selected plastics were investigated.
    Hybrydowe uniepalniacze (HFR) otrzymano na drodze syntezy cyjanuranu melaminy w obecności grafitu ekspandującego (proces w skali ½-technicznej). HFR użyto do zmniejszenia palności poliestru, epoksydu i polistyrenu. Otrzymane kompozycje charakteryzowały się wysokimi wskaźnikami tlenowymi (w przypadku kompozycji poliestrowych – 39.8 %) oraz parametrami palności poziomej FH-1 ipionowej V-0. Zbadano zależności pomiędzy parametrami wytwarzania (w tym metodami i parametrami suszenia), wymiarami ziaren oraz parametrami ekspansji otrzymanych HFR a ich efektywnością w ograniczaniu palności tworzyw polimerowych.
    Źródło:
    Polimery; 2016, 61, 5; 327-333
    0032-2725
    Pojawia się w:
    Polimery
    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:
    Recent Trends in Metal Forming: From Process Simulation and Microstructure Control In Classical Forming Processes to Hybrid Combinations Between Forming and Additive Manufacturing
    Autorzy:
    Bambach, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/99829.pdf
    Data publikacji:
    2016
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    metal forming
    additive manufacturing
    microstructure model
    recrystallization
    Opis:
    This paper describes some recent trends in metal forming such as isothermal forging of titanium aluminides and process combinations between metal forming and additive manufacturing. These trends rely on accurate process and material models for process design. Process and material models must hence be able to track the microstructure evolution in complex materials such as titanium aluminides as well as predict the microstructure evolution along process histories with multiple deformation and/or heat input steps. In models for such processes, JMAK-type kinetics for and phase transformation are still common. For processes involving deformation and heat, the accuracy, consistency and limits of JMAK-type models are discussed. It is shown that the consistency of DRX models as well as the stability of model predictions in multi-stage processes require further attention.
    Źródło:
    Journal of Machine Engineering; 2016, 16, 2; 5-17
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid Learning of Interval Type-2 Fuzzy Systems Based on Orthogonal Least Squares and Back Propagation for Manufacturing Applications
    Autorzy:
    Mendez, G.
    Hernandez, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/384517.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    type-2 fuzzy inference systems
    type-2 neuro-fuzzy systems
    hybrid learning
    uncertain rule-based fuzzy logic systems
    Opis:
    This paper presents a novel learning methodology based on the hybrid algorithm for interval type-2 (IT2) fuzzy logic systems (FLS). Since in the literature only back-propagation method has been proposed for tuning of both antecedent and consequent parameters of type-2 fuzzy logic systems, a hybrid learning algorithm has been developed. The hybrid method uses recursive orthogonal least-squares method for tuning of consequent parameters as well as the back-propagation method for tuning of antecedent parameters. The systems were tested for three types of inputs: a) interval singleton b) interval type-1 (T1) non-singleton, c) interval type-2 non-singleton. The experimental results of the application of the hybrid interval type-2 fuzzy logic systems for scale breaker entry temperature prediction in a real hot strip mill were carried out for three different types of coils. They proved the feasibility of the systems developed here for scale breaker entry temperature prediction. Comparison with type-1 fuzzy logic systems shows that the hybrid learning interval type-2 fuzzy logic systems improve performance in scale breaker entry temperature prediction under the tested condition.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2008, 2, 1; 23-32
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wykorzystanie obróbki plastycznej we współczesnych procesach wytwórczych
    The application of plastic forming in modern manufacturing processes
    Autorzy:
    Styp-Rekowski, Michał
    Matuszewski, Maciej
    Polishchuk, Oleg
    Powiązania:
    https://bibliotekanauki.pl/articles/24200533.pdf
    Data publikacji:
    2023
    Wydawca:
    Wydawnictwo AWART
    Tematy:
    formowanie plastyczne
    proces produkcji
    obrabiarka
    narzędzie
    hybrydowy proces technologiczny
    plastic forming
    manufacturing process
    machine tool
    tool
    hybrid technological process
    Opis:
    W artykule wskazano cechy obróbki plastycznej, które powodują, że ta technika obróbki jest szeroko stosowana we współczesnych procesach produkcyjnych. Ukazano także możliwości wspomagania tego rodzaju obróbki innymi technikami, np. laserem, w wyniki czego realizowane procesy nabierają charakteru hybrydowego. Zaprezentowano maszyny, narzędzia i procesy technologiczne, które powodują takie duże zainteresowanie tą techniką ze strony przemysłu.
    In this paper the features of plastic forming that make this processing technique widely used in modern production processes were described . The possibilities of supporting this type of processing with other techniques, e. g. laser, were also shown. The reason for this is that the implemented processes becoming a hybrid character. Machines, tools and technological processes that cause such great interest in this technology from the industry were presented.
    Źródło:
    Obróbka Metalu; 2023, 2; 52--57
    2081-7002
    Pojawia się w:
    Obróbka Metalu
    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:
    Modeling and convergence analysis of directed energy deposition simulations with hybrid implicit / explicit and implicit solutions
    Autorzy:
    Buhl, Johannes
    Israr, Rameez
    Bambach, Markus
    Powiązania:
    https://bibliotekanauki.pl/articles/99870.pdf
    Data publikacji:
    2019
    Wydawca:
    Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
    Tematy:
    additive manufacturing
    steel
    implicit/explicit
    thermal cycles
    Opis:
    Conventional metal manufacturing techniques are suitable for mass production. However, cheaper and faster alternatives are preferred for small batch sizes and individualized components. Directed energy deposition (DED) processes allow depositing metallic material in almost arbitrary shapes. They are characterized by cyclic heat input, hence heating and cooling every point in the workpiece several times. This temperature history leads to distribution of mechanical properties, distortions, residual stresses or even fatigue properties in the part. To avoid experimental trial-and-error optimization, different methods are available to simulate DED processes. Currently, the wire arc additive manufacturing (WAAM) is the most competitive DED process. In this work, a simulation method for the WAAM process is established and validated, which should be capable to calculate global effects (e.g. distortions, residual stresses) of real WAAM-processes with duration of hours and thousands of weld beads. The addition of beads and layers is simulated by the element birth and death technique. The elements are activated according to the movements of the heat source (arc). In this paper, the influence of the time step, the mesh size and the material properties of the inactive elements in hybrid implicit / explicit and fully implicit solutions are evaluated with respect to the computation time and stability. This investigation concludes several recommendations for AM-modelling. For example, a low Young’s modulus (100 N/mm2) for the inactive elements show nearly no influences on the welding simulation, but introduces numerical instabilities in case of multiple welding beads. The Young’s modulus should be increased to 1.000 N/mm2 for small mesh-sizes, small step-sizes and many beads, even when it introduces unwanted stresses.
    Źródło:
    Journal of Machine Engineering; 2019, 19, 3; 94-107
    1895-7595
    2391-8071
    Pojawia się w:
    Journal of Machine Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlation of manufacturing defects and impact behaviors of kenaf fiber reinforced hybrid fiberglass/Kevlar polyester composite
    Korelacja defektów produkcyjnych iodporności na uderzenie poliestrowego kompozytu hybrydowego włókno szklane//Kevlar wzmocnionego włóknem kenaf
    Autorzy:
    Suriani, M. J.
    Sapuan, S. M.
    Ruzaidi, C. M.
    Naveen, J.
    Syukriyah, H.
    Ziefarina, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1789782.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    kompozyty hybrydowe
    wady produkcyjne
    dobór materiałów
    kompozyty z włókien naturalnych
    skaningowa mikroskopia elektronowa
    hybrid composites
    manufacturing defects
    materials selection
    natural fiber composites
    scanning electron microscopy
    Opis:
    In this study, the impact properties of kenaf fibre reinforced hybrid fiberglass/Kevlar polymeric composite was investigated. In this study, a new fiber arrangement based on kenaf bast fiber as reinforcement to the hybrid fiberglass/Kevlar fiber and polyester as matrix used to fabricate the hybrid polymeric composite. Five different types of samples with different of kenaf fiber content based on volume fraction (0, 15, 45, 60 and 75%) to hybrid fiberglass/Kevlar polymer composites were manufactured. 0% of kenaf fiber has been used as control sample. The results showed that hybridization has improved the impact properties. These results were further supported through SEM micrograph of the manufacturing defects of the polymer composite. Based on literature work, manufacturing defects that occurs in composite system reduced the mechanical properties of the material. Therefore, in this research the correlation of impact behaviors and manufacturing defects of kenaf fiber reinforced hybrid fiberglass/Kevlar polymeric composite has been successfully done. As conclusion, the highest manufacturing defects determined in the composites during the fabrication significantly lowest the results of impact behavior.
    Zbadano udarność hybrydowego kompozytu polimerowego na osnowie żywicy poliestrowej napełnionej włóknami szklanymi i kevlarowymi wzmocnionego włóknem łykowym kenaf. Wytworzono pięć próbek różniących się zawartością włókien kenafu (0, 15, 45, 60 i75% obj.) Próbkę kontrolną stanowił kompozyt z 0% obj. udziałem włókien kenaf (0%). Wykazano, że hybrydyzacja wpłynęła na poprawę właściwości udarowych wyjściowego kompozytu. Wyniki potwierdzono analizą SEM defektów produkcyjnych otrzymanego kompozytu. Stwierdzono, że zachodzi korelacja między wytrzymałością na uderzenie awadami produkcyjnymi badanego hybrydowego kompozytu poliestrowego wzmocnionego włóknami kenaf. Powstałe podczas produkcji wady produkcyjne wistotnym stopniu pogarszają właściwości udarowe kompozytów.
    Źródło:
    Polimery; 2021, 66, 1; 30--35
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparative analysis of economic efficiency of mediumsized manufacturing enterprises in districts of Wielkopolska province using the hybrid approach with metric and interval-valued data
    Autorzy:
    Dehnel, Grażyna
    Walesiak, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1194462.pdf
    Data publikacji:
    2019-07-02
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    multidimensional scaling
    Opis:
    The article describes a hybrid approach to evaluating economic efficiency of medium-sized manufacturing enterprises (employing from 50 to 249 people) in districts of Wielkopolska province, using metric and interval-valued data. The hybrid approach combines multidimensional scaling with linear ordering. In the first step, multidimensional scaling is applied to obtain a visual representation of objects in a two-dimensional space. In the next step, a set of objects is ordered linearly based on the distance from the pattern (ideal) object. This approach provides new possibilities for interpreting linearly ordered results of a set of objects. Interval-valued variables characterise the objects of interests more accurately than metric data do. Metric data are atomic, i.e. an observation of each variable is expressed as a single real number. In contrast, an observation of each interval-valued variable is expressed as an interval. The analysis was based on data prepared in a two-stage process. First, a data set of observations was obtained for metric variables describing economic efficiency of medium-sized manufacturing enterprises. These unit-level data were aggregated at district level (LAU 1) and turned into two types of data: metric and interval-valued data. In the analysis of interval-valued data, two approaches are used: symbolic-to-classic, symbolic-to-symbolic. The article describes a comparative analysis of results of the assessment of economic efficiency based on metric and interval-valued data (the results of two approaches). The calculations were made with scripts prepared in the R environment.
    Źródło:
    Statistics in Transition new series; 2019, 20, 2; 49-67
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    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
    Tytuł:
    Postęp w zmniejszaniu wartości dopuszczalnych emisji substancji szkodliwych spalin z producenckich flot samochodów lekkich, stymulatorem rozwoju samochodów hybrydowych i elektrycznych
    Progress in reduction of emissions from manufacturing fleets of light vehicles, as stimulators of development of hybrid and electric vehicles
    Autorzy:
    Gis, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/107239.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Transportu Samochodowego
    Tematy:
    samochód hybrydowy
    samochód elektryczny
    emisja spalin
    hybrid car
    electric car
    emission
    Opis:
    Pojazdy o napędzie alternatywnym w tym hybrydowym i elektrycznym stają się coraz popularniejsze. Zmniejszanie wartości dopuszczalnych emisji zanieczyszczeń spalin z pojazdów sprawia, że producenci rozwijają nowoczesne konstrukcje samochodów o napędach alternatywnych. Dzięki wprowadzaniu pojazdów hybrydowych oraz elektrycznych możliwe jest znaczące zmniejszenie emisji substancji szkodliwych spalin z producenckich flot samochodów lekkich.
    Alternative electric vehicles in this hybrid and electric are becoming increasingly popular. Reducing the emission limit values of emissions from vehicles causes manufacturers to develop modern designs of alternative cars. Through the introduction of hybrid and electric vehicles, it is possible to significantly reduce the emissions of exhaust harmful substances of producer light vehicles fleets.
    Źródło:
    Transport Samochodowy; 2017, 2; 57-68
    1731-2795
    Pojawia się w:
    Transport Samochodowy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of a hybrid model of the expert system for assessing the potentiality of manufacturing the assumed quantity of wire harnesses
    Hybrydowy model eksperckiego systemu oceny stabilności systemu produkcyjnego
    Autorzy:
    Burduk, Anna
    Grzybowska, Katarzyna
    Safonyk, Andrii
    Powiązania:
    https://bibliotekanauki.pl/articles/361998.pdf
    Data publikacji:
    2019
    Wydawca:
    Wyższa Szkoła Logistyki
    Tematy:
    production system
    risk assessment
    artificial neural networks
    fuzzy logic
    stability
    variability
    system produkcji
    ocena ryzyka
    sztuczne sieci neuronowe
    logika rozmyta
    stabilność
    zmienność
    Opis:
    Wstęp: W artykule przedstawiono koncepcję sterowania systemem produkcyjnym, pozwalającą na zachowanie jego stabilności, a tym samym na realizację założonych planów produkcyjnych. W tym celu zaproponowano połączenia modeli symulacyjnych i modeli sztucznych sieci neuronowych (SSN) systemu produkcyjnego. Połączenie obydwu typów modeli było możliwe dzięki opracowaniu hybrydowego modelu systemu ekspertowego do oceny możliwości realizacji planu produkcji (celu) w zależności od wielkości ryzyka i poziomu stabilności analizowanego systemu produkcyjnego. Analizowany problem - możliwość realizacji planów produkcyjnych w zależności od wielkości ryzyka i poziomu stabilności systemu produkcyjnego - jest trudny do zamodelowania matematycznego. Jednak na podstawie analizy danych, pochodzących z modelu symulacyjnego i modelu ANN, można uzyskać informacje dotyczące zależności odpowiadających sobie wartości wejściowych i wyjściowych. Metody: Na podstawie przedstawionego sposobu zarządzania procesu produkcyjnego z wykorzystaniem modeli komputerowych, przeanalizowano możliwości zastosowania modeli symulacyjnych i modeli ANN w ocenie stabilności i ryzyka systemów produkcyjnych. Dokonano analizy i porównania obydwu typów modeli ze względu na sposób budowy oraz rodzaj danych wejściowych i wyjściowych. Wyniki: Na bezpośrednie połączenie modeli symulacyjnych i modeli SSN nie pozwala ich odmienna budowa, specyfika oraz inne rodzaje danych wejściowych i wyjściowych. Dlatego prezentowana w artykule koncepcja fuzji obydwu typów modeli odbywa się poprzez bazę wiedzy eksperckiej i wnioskowanie rozmyte. Wnioski: Na potrzeby sterowania systemem produkcyjnym, zaproponowano budowę hybrydowego modelu systemu ekspertowego do oceny możliwości realizacji celu w zależności od wielkości ryzyka i poziomu stabilności systemu produkcyjnego.
    Background: Control plays the main role in ensuring the stability of production processes, while digital models of processes and methods of artificial intelligence are used more and more commonly in it. Production of highly diversified items in small lots at low inventory levels is characterised by a much lower stability as compared with largelot manufacturing. Additionally, innovations created for items or processes result in disturbances to current work. Although this turbulence is usually momentary, it may lead to a loss of function or manufacturing stability, which in turn translates into financial losses, as well as losing customers. This paper presents the potential of using simulation models and artificial neural network models to assess the stability of a reorganized production system. Methods: The problem analysed in the paper is that of merging a simulation model with an ANN model by designing a hybrid model. A direct connection of both types of models is not possible due to their various structures, specificity, and different purposes, as well as the various types of input and output data. Therefore, the idea of merging these two types of models through an expert knowledge base and fuzzy inference was proposed. The results from the simulation model and the ANN model were used to gather the knowledge on the production system being analysed. It has been proposed that the output from the simulation model provided knowledge of the risk level, while the output from the ANN model provided knowledge of process stability. Results: The paper presents the idea of projecting a hybrid model of the expert system in order to assess the stability of a reorganized production system. A model of a hybrid expert system was developed to assess the potential of executing the assumed production plans. The level of risk and the level of stability determined by the simulation model and the ANN model are entered into the system. The output from the expert model is the value of the variable determining the potential of achieving the goal. In the construction of the model, fuzzy inference was used, which uses linguistic variables and is characterized by a knowledge system in the form of fuzzy rules "if ... then ...". For both the independent variable and for the dependent variable, a set of membership functions representing accepted linguistic variables was proposed, and then decision rules were determined. The idea of merging simulation models with ANN models was tested on a practical example in production system that manufactures products for dishwashers. Conclusions: The potentiality to execute production plans depending on the level of risk and the level of stability of the production system is too complicated to be modelled mathematically, but based on the analysis of data from the simulation and ANN models, it is possible to obtain information concerning the relations between corresponding input and output values.
    Źródło:
    LogForum; 2019, 15, 4; 459-473
    1734-459X
    Pojawia się w:
    LogForum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie żywic epoksydowych jako warstw pro-adhezyjnych w wytwarzaniu kompozytów polimer-metal metodą wtryskiwania
    The application of epoxy resins as the pro-adhesion inter-layers in the manufacturing of the polymer-metal composites during injection moulding process
    Autorzy:
    Trzaska, O.
    Dmitruk, A.
    Kornacki, Ł.
    Wróblewski, R. M.
    Kaczmar, J. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/278260.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Inżynierii Materiałów Polimerowych i Barwników
    Tematy:
    kompozyt hybrydowy polimer-metal
    żywica epoksydowa
    adhezja
    wtryskiwanie
    polymer-metal hybrid composite
    epoxy resin
    adhesion
    injection moulding
    Opis:
    W artykule przedstawiono zagadnienia związane z kompozytami hybrydowymi polimer-metal wytwarzanymi metodą wtryskiwania. Przedstawiono wpływ przygotowania powierzchni ze stali DC01 na adhezję tworzywa sztucznego do metalu. Najlepsze wyniki uzyskano dla powierzchni stalowych poddanych obróbce fizyczno-chemicznej (obróbka strumieniowo-ścierna przy pomocy cząstek elektrokorundu F 80 oraz trawienie w 15% roztworze kwasu fosforowego (V) - H3PO4). Celem zwiększenia adhezji specyficznej na granicy faz polimer-metal zaproponowano zastosowanie żywic epoksydowych jako warstw pro-adhezyjnych. Najlepsze wyniki uzyskano dla kompozycji epoksydowych poddanych modyfikacji fizycznej (dodatek napełniacza w postaci elektrokorundu szlachetnego białego F 1200 w proporcji 1:1 względem masy żywicy epoksydowej).
    The present article is focused on polymer-metal hybrid composites manufactured during injection moulding process. The influence of DC01 steel surface preparation on the polymer to metal adhesion process is discussed. The best results were obtained for the steel surfaces prepared by physical and chemical methods (the sand blasting with the use of the F 80 alumina particles and etching in the 15% solution of phosphoric acid). The epoxy resins were proposed as the pro-adhesion inter-layers to increase the strength of the specific adhesion at the polymer-metal interface. The best results were obtained for the epoxy compositions which had been modified with use physical methods (by adding the F 1200 alumina filler in proportion 1:1 to mass epoxy resin).
    Źródło:
    Przetwórstwo Tworzyw; 2014, [R.] 20, nr 4 (160), 4 (160); 349-355
    1429-0472
    Pojawia się w:
    Przetwórstwo Tworzyw
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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