Probabilistic assessment of the fatigue reliability

• Autorzy: Nechval K. N. , Nechval N. A. , Berzins G. , Purgailis M.
• Języki publikacji: EN

Abstrakty

EN

The prediction of stochastic crack growth accumulation is important for the reliability analysis of structures as well as the scheduling of inspection and repair/replacement maintenance. Because the initial crack size, the stress, the material properties and other factors that may affect the fatigue crack growth are statistically distributed, the fi rst-order second-moment technique is often adopted to calculate the fatigue reliability of industrial structures. In this paper, a second-order thirdmoment technique is presented and a three-parameter Weibull distribution is adopted to refl ect the infl uences of skewness of the probability density function. The second-order third-moment technique that has more characteristics of those random variables that are concerned in reliability analysis is obviously more accurate than the traditional fi rst-order second-moment technique.

Słowa kluczowe

EN

Paris-Erdogan law; fatigue reliability; Weibull distribution

• Wydawca: Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne
• Czasopismo: Eksploatacja i Niezawodność
• Rocznik: 2007
• Tom: nr 3
• Strony: 3--6
• Opis fizyczny: Bibliogr. 3 poz.

Twórcy

autor

Nechval K. N.

autor

Nechval N. A.

autor

Berzins G.

autor

Purgailis M.

• Applied Mathematics Department Transport and Telecommunication Institute Lomonosov Street 1, LV-1019 Riga, Latvia,

Bibliografia

• [1] Paris P.C., Erdogan F.: Critical analysis of propagation laws. J. Basic Eng. Trans. ASME Ser. D 55, 1963, p. 528–534.
• [2] Provan J.W.: Probabilistic Fracture Mechanics and Reliability. Dordrecht: Martinus Nijhoff, 1987.
• [3] Yang J.N., Manning S.D.: A simple second order approximation for stochastic crack growth analysis. Engineering Fracture Mechanics vol. 53, 1996, p. 677-686.