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A Two-stage Reliability Demonstration Test for Mechanical Components  

Kwon, Young-Il (Department of Industrial Engineering, Cheongju University)
Publication Information
Journal of Korean Society for Quality Management / v.34, no.1, 2006 , pp. 20-26 More about this Journal
Abstract
In the fields of mechanical reliability application, "zero" or "zero or one" failure tests are most commonly used for demonstrating reliability of a product since they reduce test duration and/or sample size compared to other test methods that guarantees the same reliability of a product with a given confidence level or consumer's risk. The test duration of the "zero or one" failure test is longer than that of "zero" failure test but it has advantage of smaller producer's risk. In this paper a two-stage test is developed that compromises the "zero" and "zero or one" failure tests. The properties of the proposed two-stage test are investigated and the three test methods are compared using a numerical example.
Keywords
Reliability Demonstration; Two-stage Test; Weibull Distribution; Zero Failure Test; Zero or One Failure Test;
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