Reliability Degradation of Mechanical Components and Systems

This chapter focuses on time-dependent reliability assessment approaches. Two new methods are presented to depict the change of reliability with the increase of operation time or the number of applied load cycles. In the first part of this chapter, we present a time-dependent load-strength interference analysis method that models reliability degradation caused by a randomly repeated load. By describing the loading history as the Poisson stochastic process, time-dependent reliability models are developed, and the characteristics of the failure rate curve with respect to different component strength degradation patterns is discussed. In the second part, we present a residual life distribution based method by which we model the change of the residual fatigue life distribution with the number of load cycles. Based on the experimental study of residual fatigue life distributions of two metallic materials, a model is developed to calculate the parameters of residual fatigue life distribution under variable amplitude load history, by which residual life distribution parameters are determined with the known applied load history. Furthermore, a recursive equation is introduced to predict the probability of fatigue failure under variable amplitude load histories.

[1]  John Crocker,et al.  Age-related maintenance versus reliability centred maintenance: a case study on aero-engines , 2000, Reliab. Eng. Syst. Saf..

[2]  P. O'Connor,et al.  Practical Reliability Engineering , 1981 .

[3]  Gary Wasserman.  Reliability Verification, Testing, and Analysis in Engineering Design , 2002 .

[4]  L. Camarinopoulos,et al.  Assessment of the time-dependent structural reliability of buried water mains , 1999 .

[5]  F. Z. Choukairi,et al.  Use of a statistical approach to verify the cumulative damage laws in fatigue , 1993 .

[6]  R. Larsen,et al.  An introduction to mathematical statistics and its applications (2nd edition) , by R. J. Larsen and M. L. Marx. Pp 630. £17·95. 1987. ISBN 13-487166-9 (Prentice-Hall) , 1987, The Mathematical Gazette.

[7]  H. Bähring,et al.  The impact of load changing on lifetime distributions , 1991 .

[8]  Sankaran Mahadevan,et al.  Development of a reliability-based fatigue life model for gas turbine engine structures , 1996 .

[9]  M. Birkinshaw,et al.  Reliability-based fatigue and fracture mechanics assessment methodology for offshore structural components , 1994 .

[10]  Jie Mi,et al.  Mean residual life and its association with failure rate , 1999 .

[11]  Ove Ditlevsen,et al.  Stochastic model for joint wave and wind loads on offshore structures , 2002 .

[12]  Wu Wen-Fang,et al.  COMPUTER SIMULATION AND RELIABILITY ANALYSIS OF FATIGUE CRACK PROPAGATION UNDER RANDOM LOADING , 1993 .

[13]  Daoli Chen.  A new approach to the estimation of fatigue reliability at a single stress level , 1991 .

[14]  Loon Ching Tang,et al.  Mean residual life of lifetime distributions , 1999 .

[15]  F. J. Witt,et al.  Stress-Strength Interference Method , 1995 .

[16]  V. A. Kopnov.  Residual life, linear fatigue damage accumulation and optimal stopping , 1993 .

[17]  Elmer E. Lewis,et al.  A load-capacity interference model for common-mode failures in 1-out-of-2: G systems , 2001, IEEE Trans. Reliab..

[18]  Wilfried B. Krätzig,et al.  Reliability of reinforced concrete structures under fatigue , 2002, Reliab. Eng. Syst. Saf..

[19]  P. H. Wirsching,et al.  Advanced fatigue reliability analysis , 1991 .

[20]  A Murty,et al.  A new approach to fatigue strength distribution for fatigue reliability evaluation , 1995 .

[21]  Hoang Pham.  A New Generalized Systemability Model , 2005 .

[22]  Liyang Xie,et al.  Load-Strength Order Statistics Interference Models , 2005 .

[23]  Dimitri Kececioglu.  RELIABILITY ANALYSIS OF MECHANICAL COMPONENTS AND SYSTEMS. , 1972 .

[24]  Tim Topper,et al.  Notch fatigue behaviour as influenced by periodic overloads , 1995 .

[25]  Marvin Rausand,et al.  FAILURE MECHANISMS AND LIFE MODELS , 1996 .

[26]  Stephen J. Hudak,et al.  A simple reliability model for the fatigue failure of repairable offshore structures , 1993 .

[27]  S. Rahman,et al.  Decomposition methods for structural reliability analysis , 2005 .

[28]  L. B. Chester,et al.  Sequential cumulative fatigue reliability , 1974 .

[29]  Jian-Ping Li,et al.  A method to take account of inhomogeneity in mechanical component reliability calculations , 2005, IEEE Transactions on Reliability.

[30]  Ming J. Zuo,et al.  Reliability evaluation of furnace systems , 1999 .

[31]  Yih‐Tsuen Wu,et al.  Advanced Reliability Method for Fatigue Analysis , 1984 .

[32]  Dilip Roy,et al.  A discretizing approach for evaluating reliability of complex systems under stress-strength model , 2001, IEEE Trans. Reliab..

[33]  Knut O. Ronold,et al.  Reliability-based design of wind-turbine rotor blades against failure in ultimate loading , 2000 .

[34]  M. Ichikawa,et al.  A probabilistic investigation of fatigue life and cumulative cycle ratio , 1984 .

[35]  Heinz P. Bloch,et al.  An introduction to machinery reliability assessment , 1990 .

[36]  Li Bing,et al.  A practical engineering method for fuzzy reliability analysis of mechanical structures , 2000 .