Analysis of Accelerated Life Test Data Involving Two Failure Modes

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 211-212)
• Pages: 1002-1006
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.211-212.1002
• Online since: February 2011
• Authors: R. Jiang
• Keywords: Accelerated Life Testing, Competing Risk, Failure Mode, Least-Square Method (LSM), Maximum Likelihood Method

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