Document Details

Document Type : Article In Journal 
Document Title :
Estimation of the Generalized Exponential Distribution Parameters Under Constant-Stress Partially Accelerated Life Testing Using Type I Censoring
Estimation of the Generalized Exponential Distribution Parameters Under Constant-Stress Partially Accelerated Life Testing Using Type I Censoring
 
Subject : Estimation of the Generalized Exponential Distribution Parameters Under Constant-Stress Partially Accelerated Life Testing Using Type I Censoring 
Document Language : English 
Abstract : Testing the lifetime of items under normal use condition often requires a long period of time, particularly for a products having high reliability. To minimize the costs involved in testing without reducing the quality of the data obtained, the items run at higher than usual level of stresses to induce early failure. This article concerns with constant-stress partially accelerated life tests (CS-PALT) based on type I censoring in which each test item is observed until it fails before a predetermined time, keeping all the stress factors at constant level. The lifetime of items is assumed to follow generalized exponential distribution. Maximum likelihood method is used to estimate the model parameters and acceleration factor of lifetime distribution from the test data. Netwon Raphson method is applied to solve numerically the non-linear likelihood equations using Mathcad (2001). Confidence intervals of the estimators are constructing. In addition, an asymptotic variance and covariance matrix of the estimators is obtained. Simulation studies are carried out to investigate the performance of the estimators. 
ISSN : 0 
Journal Name : The Egyptian Statistical Journal 
Volume : 51 
Issue Number : 2 
Publishing Year : 1427 AH
2007 AD 
Number Of Pages : 15 
Article Type : Article 
Added Date : Saturday, July 4, 2009 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Amal S.Amal S.InvestigatorDoctorate 

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