Step-Stress Accelerated Life Testing for Weibull Distribution with Non-Constant Shape Parameter

2002 ◽  
Vol 53 (1-2) ◽  
pp. 33-52 ◽  
Author(s):  
A.D. Dharmadhikari ◽  
Md. Monsur Rahman
Keyword(s):  
Weibull Distribution ◽  
Shape Parameter ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Accelerated Life ◽  
Constant Shape

Analysis of Accelerated Life Test Data Involving Two Failure Modes

2011 ◽  
Vol 211-212 ◽  
pp. 1002-1006 ◽  
Author(s):  
R. Jiang
Keyword(s):  
Shape Parameter ◽  
Failure Modes ◽  
Risk Model ◽  
Accelerated Life Testing ◽  
Accelerated Life Test ◽  
Life Testing ◽  
Life Test ◽  
Life Distribution ◽  
Accelerated Life ◽  
Step Procedure

This paper presents an approach to analyze accelerated life testing (ALT) data involving two failure modes. The approach first transforms the ALT dataset into two new datasets that correspond to individual failure modes. Each transformed dataset is modeled using a two-step procedure, and the resulted models associated with individual failure modes are combined into a competing risk model. The approach is illustrated using the ALT data of industrial heaters from the literature. The analysis shows that the shape parameter of the life distribution can change with stress level.

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