Nonlinear degradation modeling and maintenance policy for a two-stage degradation system based on cumulative damage model

• Autorzy: Ni X. , Zhao J. , Song W. , Guo C. , Li H.

Identyfikatory

DOI

10.17531/ein.2016.2.3

Warianty tytułu

PL

System charakteryzujący się dwuetapowym procesem degradacji: nieliniowe modelowanie degradacji oraz wyznaczanie strategii eksploatacji systemu na podstawie modelu sumowania uszkodzeń

• Języki publikacji: EN

Abstrakty

EN

This paper attempts to take into account a two-stage degradation system which degradation rate is non-stationary and change over time. The system degradation is thought to be caused by shocks, and system degradation model is established based on cumulative damage model. The nonlinear degradation process is expressed by different shock damage and shock counting. And shock damage and shock counting are assumed to be Gamma distribution and non-homogeneous Poisson process, respectively. On the basis of these, system reliability model and nonlinear degradation model are given. In order to optimal maintenance policy for considered system, adaptive maintenance policy and time-dependent maintenance policy are studied, and mean maintenance cost rate is established to evaluate the maintenance policies. Numerical examples are given to analyze the influences of degradation model parameters and find optimal maintenance policy for considered system.

PL

W przedstawionym artykule badano system, w którym proces degradacji zachodzi dwuetapowo, a szybkość degradacji jest zmienna w czasie. Przyjęto, że do degradacji systemu dochodzi w wyniku wstrząsów. Model degradacji systemu oparto na modelu sumowania uszkodzeń. Nieliniowy proces degradacji określono jako taki, w którym uszkodzenie powodowane wstrząsem oraz częstotliwość wstrząsów są wartościami zmiennymi. Przyjęto, że uszkodzenie powodowane wstrząsem ma rozkład gamma a częstotliwość wstrząsów jest niejednorodnym procesem Poissona. Na tej podstawie utworzono model niezawodności systemu oraz model degradacji nieliniowej. W celu opracowania optymalnej strategii eksploatacji dla rozpatrywanego systemu, rozważono dwa typy strategii utrzymania ruchu: strategię adaptacyjną oraz strategię czasowo-zależną. Strategie te oceniano określając średni poziom kosztów eksploatacji. Przykłady numeryczne posłużyły do analizy wpływu parametrów modelu degradacji oraz pozwoliły określić optymalną strategię utrzymania dla rozpatrywanego systemu.

Słowa kluczowe

EN

two-stage; nonlinear; degradation modeling; cumulative damage model; maintenance policy

PL

proces degradacji dwuetapowy; nieliniowy; modelowanie degradacji; model sumowania uszkodzeń; strategia eksploatacji

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2016
• Tom: Vol. 18, no. 2
• Strony: 171--180
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Ni X.

• Mechanical Engineering College Shijiazhuang, 050003, Hebei province, China

autor

Zhao J.

• Mechanical Engineering College Shijiazhuang, 050003, Hebei province, China

autor

Song W.

autor

Guo C.

• Mechanical Engineering College Shijiazhuang, 050003, Hebei province, China

autor

Li H.

• Mechanical Engineering College Shijiazhuang, 050003, Hebei province, China

Bibliografia

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