Failure Analysis Informing Embedded Health Monitoring of Electromagnetic Relays

Lucas Kirschbaum, Fateme Dinmohammadi, David Flynn, Valentin Robu, Michael Pecht

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, failure analysis of an electromagnetic relay is studied to inform embedded health monitoring for the prediction of Remaining Useful Life (RUL) of electromagnetic relays. A statistical design of experiment with online monitoring of voltage, current, temperature, resistance, duty cycle, and frequency is used to identify relay failure precursors. Examples of detected precursors include abnormal spikes in resistance and extension of the average closing time of the relay within the final 1.5 million actuations prior to failure. A detailed post-failure analysis utilising white light interferometry and energy dispersive X-ray (EDX) analysis reveals the relay failure modes associated with erosion, pit and crater formation, and material transfer. The results demonstrate that low resolution data can detect signatures of impending failure modes such as stuck open and closed failures as well as unacceptable long opening times. The findings within this paper demonstrate remote monitoring of the near real-time health of electromagnetic relays with low resolution data analysis.
Original languageEnglish
Title of host publication2018 3rd International Conference on System Reliability and Safety (ICSRS)
PublisherIEEE
Pages261-267
Number of pages7
ISBN (Electronic)9781728102382
ISBN (Print)9781728102399
DOIs
Publication statusPublished - 15 Apr 2019
Event3rd International Conference on System Reliability and Safety 2018 - barcelona, Barcelona, Spain
Duration: 23 Nov 201825 Nov 2018
https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=8672656

Conference

Conference3rd International Conference on System Reliability and Safety 2018
Abbreviated titleICSRS 2018
CountrySpain
CityBarcelona
Period23/11/1825/11/18
Internet address

Keywords

  • diagnostics
  • electromagnetic relays
  • embedded health monitoring
  • FMMEA
  • RUL

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Control and Optimization
  • Modelling and Simulation

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