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Article
Assessing Risk of a Serious Failure Mode Based on Limited Field Data
IEEE Transactions on Reliability
  • Zhibing Xu, Virginia Tech
  • Yili Hong, Virginia Tech
  • William Q. Meeker, Iowa State University
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
3-1-2015
DOI
10.1109/TR.2014.2354893
Abstract

Many consumer products are designed and manufactured so that the probability of failure during the technological life of the product is small. Most product units in the field retire before they fail. Even though the number of failures of such products is small, there is still a need to model and predict field failures for purposes of risk assessment in applications that involve safety. Challenges in the modeling and prediction of failures arise because the retirement times are often unknown, few failures have been reported, and there are delays in field failure reporting. Motivated by an application to assess the risk of failure for a particular product, we develop a statistical prediction procedure that considers the impact of product retirements and reporting delays. Based on the developed method, we provide the point predictions for the cumulative number of reported failures over a future time period, and corresponding prediction intervals to quantify uncertainty. We also conduct sensitivity analysis to assess the effects of different assumptions on failure-time and retirement distributions.

Comments

This is a manuscript of an article published as Xu, Zhibing, Yili Hong, and William Q. Meeker. "Assessing risk of a serious failure mode based on limited field data." IEEE Transactions on Reliability 64, no. 1 (2015): 51-62. DOI: 10.1109/TR.2014.2354893. Posted with permission.

Rights
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Copyright Owner
IEEE
Language
en
File Format
application/pdf
Citation Information
Zhibing Xu, Yili Hong and William Q. Meeker. "Assessing Risk of a Serious Failure Mode Based on Limited Field Data" IEEE Transactions on Reliability Vol. 64 Iss. 1 (2015) p. 51 - 62
Available at: http://works.bepress.com/wqmeeker/162/