Accelerated life test model by time-varying dependence for rotary lip seals

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Abstract

In this paper, a new accelerated life testing (ALT) model based on both failure physics and statistics is proposed for reliability analysis of rotary lip seals. The new model considers the dependence of different failure modes of rotary lip seals and characterizes the dependence by a time-varying copula function. The reliability function of the rotary lip seal is derived and the associated parameters in this model are estimated by Bayesian method. The proposed model is validated by experimental data from accelerated tests and the results show that the proposed model is accurate and effective. Ideas derived from this model can be applied to the ALT model development of some other mechanical components of which failure modes are s-dependent. The proposed parameter estimation algorithm can be also improved in our future work.

Original languageEnglish
Title of host publicationRAMS 2019 - 2019 Annual Reliability and Maintainability Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538665541
DOIs
StatePublished - Jan 2019
Event2019 Annual Reliability and Maintainability Symposium, RAMS 2019 - Orlando, United States
Duration: 28 Jan 201931 Jan 2019

Publication series

NameProceedings - Annual Reliability and Maintainability Symposium
Volume2019-January
ISSN (Print)0149-144X

Conference

Conference2019 Annual Reliability and Maintainability Symposium, RAMS 2019
Country/TerritoryUnited States
CityOrlando
Period28/01/1931/01/19

Keywords

  • Accelerated life testing model
  • Dependence analysis
  • Rotary lip seals
  • Time-varying copula

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