Product reliability assessment by combining accelerated degradation test and accelerated life test

ZHAO Zhi-cao, SONG Bao-wei, ZHAO Xiao-zhe

Systems Engineering - Theory & Practice ›› 2014, Vol. 34 ›› Issue (7) : 1916-1920.

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Systems Engineering - Theory & Practice ›› 2014, Vol. 34 ›› Issue (7) : 1916-1920. DOI: 10.12011/1000-6788(2014)7-1916

Product reliability assessment by combining accelerated degradation test and accelerated life test

  • ZHAO Zhi-cao1, SONG Bao-wei1, ZHAO Xiao-zhe1,2
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Abstract

A new method by combining accelerated degradation test and accelerated life test was proposed to evaluate the reliability of product with high reliability and long life quickly. Based on the establishing of appropriate degradation path model, failure distribution functions of product under different stresses were presented. Pseudo failure life time data were generated according to these functions by numerical simulation and later dealt with the method of accelerated life test. Then, the failure distribution function of product under usual stress was extrapolated. This method can avoid the process of accelerated degeneration model analysis and modeling and reduce the workload with the assessment result having certain accuracy. Finally, the numerical example indicated the validity of this method.

Key words

accelerated degradation test / accelerated life test / pseudo failure life time / degradation path / reliability assessment

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ZHAO Zhi-cao , SONG Bao-wei , ZHAO Xiao-zhe. Product reliability assessment by combining accelerated degradation test and accelerated life test. Systems Engineering - Theory & Practice, 2014, 34(7): 1916-1920 https://doi.org/10.12011/1000-6788(2014)7-1916

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