Title: Step-stress accelerated test

Authors: Ming-Wei Lu, Richard J. Rudy

Addresses: Daimler Chrysler Corporation, 800 Chrysler Drive, Auburn Hills, MI 48326, USA. ' Daimler Chrysler Corporation, 800 Chrysler Drive, Auburn Hills, MI 48326, USA

Abstract: Most products are designed to operate for a long period of time, and in such case, life testing is a relatively lengthy procedure. Lengthy tests tend to be expensive and the result becomes available too late to be of much use. To reduce the experimental cost significantly and provide an efficient tool to assess the life distribution for highly reliable products, the Step-stress accelerated test (SSAT) was developed. An example of a SAE keyhole specimen made of RQC-100 is used to demonstrate the SSAT procedure.

Keywords: median rank; Monte Carlo simulation; reliability; step-stress accelerated test; SSAT; Weibull distribution; life testing; product life; reliability.

DOI: 10.1504/IJMPT.2002.005468

International Journal of Materials and Product Technology, 2002 Vol.17 No.5/6, pp.425 - 434

Published online: 11 Oct 2004 *

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