Maximum likelihood analysis of multi-stress accelerated life test data of series systems with competing log-normal causes of failure

2015 ◽  
Vol 229 (2) ◽  
pp. 119-130 ◽  
Author(s):  
Soumya Roy ◽  
Chiranjit Mukhopadhyay
Keyword(s):  
Maximum Likelihood ◽  
Test Data ◽  
Accelerated Life Test ◽  
Maximum Likelihood Analysis ◽  
Life Test ◽  
Accelerated Life ◽  
Likelihood Analysis ◽  
Log Normal ◽  
Series Systems ◽  
Causes Of Failure

Maximum-Likelihood Estimation of the Parameters with Constraints in Step-Stress Accelerated Life Tests

2011 ◽  
Vol 291-294 ◽  
pp. 2211-2214
Author(s):  
Yu Hong Xing ◽  
Rui Yuan Liu
Keyword(s):  
Maximum Likelihood ◽  
Maximum Likelihood Estimation ◽  
Test Data ◽  
Likelihood Estimation ◽  
Accelerated Life Test ◽  
Life Test ◽  
Average Lifespan ◽  
Accelerated Life Tests ◽  
Accelerated Life ◽  
Life Tests

This paper investigates the maximum likelihood estimation of the average lifespan of products with the constraints, and the estimation of the average lifespan at stress level, which follows the exponential distribution, is derived by transforming the time-censoring step-stress accelerated life test data into the corresponding constant-stress accelerated life test data. The proposed method can overcome the shortcoming of information lose.

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