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    Wyświetlanie 1-4 z 4
    Tytuł:
    An adaptive method based on PC-Kriging for system reliability analysis of truss structures
    Autorzy:
    Chen, Pengyu
    Zhao, Cunbao
    Yao, He
    Zhao, Shengnan
    Powiązania:
    https://bibliotekanauki.pl/articles/27312783.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
    Tematy:
    trade-off
    truss structures
    system reliability analysis
    global metamodel
    local metamodel
    representative failure modes
    Opis:
    In practice, a truss consists of a large number of members which makes it a complex system. This leads to difficulties to estimate the system reliability due to computational costs. An adaptive method is thereby proposed to deal with this issue. It constructs a global metamodel to quickly estimate the rough reliability index of a truss. According to the estimated reliability index, the differential evolution algorithm is performed to generate more samples located in an expanded domain so that more representative failure modes can be identified. Combined with AK-SYSi, local metamodels of representative failure mods are built, and updated through active learning. When the convergence criterion is satisfied, the results of system reliability analysis can be obtained. Eventually, two examples of truss structures are studied to illustrate the superiority of the proposed method in balancing accuracy and efficiency. The results indicate that the proposed method makes a good balance between accuracy and efficiency when it is applied to analyze the system reliability of the truss.
    Źródło:
    Eksploatacja i Niezawodność; 2023, 25, 3; art. no. 169497
    1507-2711
    Pojawia się w:
    Eksploatacja i Niezawodność
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surrogate synthesis of frame eddy current probes with uniform sensitivity in the testing zone
    Autorzy:
    Halchenko, Volodymyr Ya.
    Trembovetska, Ruslana
    Tychkov, Volodymyr
    Powiązania:
    https://bibliotekanauki.pl/articles/1848998.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    eddy current probe
    uniform sensitivity
    metamodel
    additive neural network regression
    surrogate optimization
    global extremum
    Opis:
    A mathematical method for nonlinear surrogate synthesis of frame surface eddy current probes providing a uniform eddy current density distribution in the testing object area is proposed. A metamodel of a frame movable eddy-current probe with a planar excitation system structure, used in the algorithm for surrogate optimal synthesis was created. The examples of a nonlinear synthesis of excitation systems with the application of the modern metaheuristic stochastic algorithms for finding the global extremum are considered. The numerical findings of the problem analyses are presented. The efficiency of the synthesized excitation structures was demonstrated on the basis of the eddy current density distribution graphs on the surface of the control zone of the object in comparison with classical analogues.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 3; 551-564
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surrogate synthesis of frame eddy current probes with uniform sensitivity in the testing zone
    Autorzy:
    Halchenko, Volodymyr Ya.
    Trembovetska, Ruslana
    Tychkov, Volodymyr
    Powiązania:
    https://bibliotekanauki.pl/articles/1849043.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    eddy current probe
    uniform sensitivity
    metamodel
    additive neural network regression
    surrogate optimization
    global extremum
    Opis:
    A mathematical method for nonlinear surrogate synthesis of frame surface eddy current probes providing a uniform eddy current density distribution in the testing object area is proposed. A metamodel of a frame movable eddy-current probe with a planar excitation system structure, used in the algorithm for surrogate optimal synthesis was created. The examples of a nonlinear synthesis of excitation systems with the application of the modern metaheuristic stochastic algorithms for finding the global extremum are considered. The numerical findings of the problem analyses are presented. The efficiency of the synthesized excitation structures was demonstrated on the basis of the eddy current density distribution graphs on the surface of the control zone of the object in comparison with classical analogues.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 3; 551-564
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surrogate synthesis of frame eddy current probes with uniform sensitivity in the testing zone
    Autorzy:
    Halchenko, Volodymyr Ya.
    Trembovetska, Ruslana
    Tychkov, Volodymyr
    Powiązania:
    https://bibliotekanauki.pl/articles/1849059.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    eddy current probe
    uniform sensitivity
    metamodel
    additive neural network regression
    surrogate optimization
    global extremum
    Opis:
    A mathematical method for nonlinear surrogate synthesis of frame surface eddy current probes providing a uniform eddy current density distribution in the testing object area is proposed. A metamodel of a frame movable eddy-current probe with a planar excitation system structure, used in the algorithm for surrogate optimal synthesis was created. The examples of a nonlinear synthesis of excitation systems with the application of the modern metaheuristic stochastic algorithms for finding the global extremum are considered. The numerical findings of the problem analyses are presented. The efficiency of the synthesized excitation structures was demonstrated on the basis of the eddy current density distribution graphs on the surface of the control zone of the object in comparison with classical analogues.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 3; 551-564
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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