scholarly journals Parameter Estimation Based on Censored Data under Partially Accelerated Life Testing for Hybrid Systems due to Unknown Failure Causes

2022 ◽  
Vol 130 (1) ◽  
pp. 1-31
Author(s):  
Mustafa Kamal
Keyword(s):  
Parameter Estimation ◽  
Hybrid Systems ◽  
Censored Data ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Accelerated Life

scholarly journals Statistical Inference for Burr Type X Distribution using Geometric Process in Accelerated Life Testing Design for Time censored data

2020 ◽  
pp. 577-586
Author(s):  
Ahmadur Rahman ◽  
Tabassum Naz Sindhu ◽  
Showkat Ahmad Lone ◽  
Mustafa Kamal
Keyword(s):  
Censored Data ◽  
Life Stress ◽  
Asymptotic Variance ◽  
Accelerated Life Testing ◽  
Likelihood Method ◽  
Type I ◽  
Life Testing ◽  
Statistical Point ◽  
Geometric Process ◽  
Accelerated Life

In accelerated life testing researcher generally use a life stress relationship between life characteristic and stress to estimate the parameters of failure time distributions at use condition which is just a re-parameterization of original parameters but from statistical point of view it is easy and reasonable to deal with original parameters of the distribution directly instead of developing inference for the parameters of the life stress relationship. So, an attempt is made here to estimate the parameters of Burr Type X life distribution directly in accelerated life testing by assuming that the lifetimes at increasing stress levels forms a geometric process. A mathematical model for the analysis of constant stress accelerated life testing for type-I censored data is developed and the estimates of parameters are obtained by using the maximum likelihood method. Also a Fisher information matrix is constructed in order to get the asymptotic variance and interval estimates of the parameters. Lastly, a simulation study is performed to illustrate the statistical properties of the parameters and the confidence intervals.

ACCELERATED LIFE TESTING OF COMPONENTS OF NUCLEAR RESEARCH REACTORS

2016 ◽  
Author(s):  
Vanderley Vasconcelos ◽  
WELLINGTON SOARES ◽  
Antonio Carlos Lopes da Costa ◽  
Raíssa Oliveira Marques
Keyword(s):  
Nuclear Research ◽  
Accelerated Life Testing ◽  
Life Testing ◽  
Research Reactors ◽  
Accelerated Life
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