RELIABILITY PREDICTION OF A MECHANICAL COMPONENT THROUGH ACCELERATED LIFE TESTING

Robust Designs of Step-Stress Accelerated Life Testing Experiments for Reliability Prediction

In this article, we discuss the optimal and robust designs for accelerated life testing (ALT) when a step-stress plan is performed. It is assumed that the time to failure of a product has a Weibull distribution with a log-linear life-stress relationship. We adopt a generalized Khamis-Higgins model for the effect of changing stress levels. Taking into account that the assumed life-stress relatio...

Bayesian Accelerated Life Testing

In this paper a Bayesian approach for accelerated life testing will be considered. It will be assumed that the failure times at the different stress levels follow a Weibull distribution and exponential distribution, respectively. In accelerated life tests, the components are exposed to an environment that is more severe that the usual environment, such that the components will fail in a shorter...

Design of Accelerated Life Testing Plans for Products Exposed to Random Usage

< p>Accelerated Life Testing (ALT) is very important in evaluating the reliability of highly reliable products. According to ALT procedure, products undergo higher stress levels than normal conditions to reduce the failure times. ALTs have been studied for various conditions and stresses. In addition to common stress such as temperature and humidity, random usage can also be considered as anoth...

Determining Component Reliability Using a Testing Index

Software reliability assessment using accelerated testing methods

The use of operational pro®les and usage-based testing has received considerable attention recently in the software engineering literature. Testing under the actual operational pro®le can, however, be expensive, time consuming or even infeasible in situations where the performance of a system is dominated by infrequent but highly critical events. We consider a real application that deals with t...