Journal Published Online: 06 August 2014
Volume 43, Issue 4

On Studying Partially Accelerated Life Tests Under Progressive Stress

CODEN: JTEVAB

Abstract

For highly reliable products, a progressive stress accelerated life test has been proposed to obtain timely information of the product's lifetime distribution. This article considers a progressive stress partially accelerated life test model when the lifetime of a product under use condition follows Weibull distribution. It is assumed that the progressive stress is directly proportional to time. The statistical properties of the maximum likelihood (ML) estimators of the model parameters such as existence, uniqueness, and invariance are studied. The biases and mean square errors of the maximum likelihood estimators are computed to assess their performances in the presence of the stress method developed in this article through a Monte Carlo simulation study.

Author Information

Ismail, Ali
King Saud University, College of Science, Department of Statistics and Operations Research, Riyadh, SA Cairo University, Giza, EG
Al-Babtain, A.
King Saud University, College of Science, Department of Statistics and Operations Research, Riyadh, SA
Pages: 9
Price: $25.00
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Details
Stock #: JTE20130304
ISSN: 0090-3973
DOI: 10.1520/JTE20130304