ASQ

Exclusive Content & Downloads from ASQ

Optimum Specimen Sizes and Sample Allocation for Estimating Weibull Shape Parameters

Summary: [This abstract is based on the authors' abstract.] Since the strength of brittle materials such as ceramics used in spacecraft varies over the region under stress, a Weibull model is generally used in testing. For economic reasons, it is necessary to reduce the number of test specimens by determining the optimum size and allocation of the specimens. To this end, data is examined on fracture strength and location based on both internal and surface cracks. Results show that using two different specimen sizes with an equal number of specimens for each reduces both the number and total volume of specimens specified in the standard test for flexural strength of ceramics.

Anyone with a subscription, including Site and Enterprise members, can access this article.


Other Ways to Access content:

Join ASQ

Join ASQ as a Full member. Enjoy all the ASQ member benefits including access to many online articles.

  • Topics: Reliability
  • Keywords: Stressing, Risk analysis, Sample estimates, Failure analysis, Weibull degradation model, Weibull distribution
  • Author: Suzuki, Kazuyuki; Nakamoto, Toshie; Matsuo, Yohtaro
  • Journal: Technometrics