Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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The Effect of Scale Parameter in Designing Reliability Demonstration Test for Lognormal Lifetime Distribution

대수정규 수명분포를 갖는 제품에 대한 신뢰성 입증시험에서 척도모수의 영향분석

  • Kwon, Young Il (Department of Industrial Engineering, Cheongju University)
  • 권영일 (청주대학교 산업공학과)
  • Received : 2014.01.12
  • Accepted : 2014.03.14
  • Published : 2014.03.25
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Abstract

In the fields of reliability application, the most commonly used test methods for reliability demonstration are zero-failure acceptance tests since they require fewer test samples and less test time compared to other test methods that guarantee the same reliability with a given confidence level. For products with lognormal lifetime distribution, the value of scale parameter is usually assumed to be known in designing reliability demonstration tests. It is important to select correct values of scale parameters to guarantee the specified reliability with given confidence level exactly. The effect of using wrong values of scale parameters in designing reliability demonstration test for products with lognormal lifetime distribution is examined and selecting proper values of scale parameters for conservative reliability demonstration is discussed.

Keywords

References

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