Reliability Analysis of Vacuum Circuit Breakers with Multiple Failure Modes

Will Wascom, Yisha Xiang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The reliability of critical components within large test facilities, such as the Unitary Plan Wind Tunnel, is a paramount concern, due to the significant impact of component failures which result in facility downtime and subsequent schedule increases. Testing is on the critical path of multiple aircraft and spacecraft development projects, therefore, a component failure affects not only the test facility but also many development programs which require testing prior to attaining key milestones in order to stay on schedule. Vacuum circuit breakers, which actuate electrical power during wind tunnel operations, are critical single point of failure components. The breakers have several failure mechanisms and associated repair processes. This paper models the recurrent failure and subsequent maintenance events throughout the operation life of vacuum circuit breakers as a trend renewal process. The power law function is used as the trend function while the Weibull distribution is used as the model's renewal distribution. The model parameters are estimated using the maximum likelihood method.

Original languageEnglish
Title of host publication2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728171029
DOIs
StatePublished - Aug 2020
Event2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020 - Vancouver, Canada
Duration: Aug 20 2020Aug 23 2020

Publication series

Name2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020

Conference

Conference2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling, APARM 2020
CountryCanada
CityVancouver
Period08/20/2008/23/20

Keywords

  • component
  • imperfect repair
  • maintenance
  • renewal model
  • trend renewal process

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