Preventive maintenance of a single machine system working under piecewise constant operating condition

Jiawen Hu, Zuhua Jiang, Haitao Liao

Research output: Contribution to journalArticle

8 Scopus citations


Manufacturing machines usually work under piecewise constant operating condition (PCOC) and are subject to imperfect preventive maintenance (PM). In this paper, an extended imperfect maintenance (IM) model for a machine working under PCOC is developed by combining an age-based hybrid IM model and an accelerated failure time model (AFTM). Maximum likelihood method is provided for estimating the model parameters. A dynamic cost-effective PM policy based on a short-term production plan is proposed for a common situation where the production plan is updated dynamically and only the current operating condition (OC) is confirmed. A numerical example is conducted to demonstrate the use of the proposed policy in practice.

Original languageEnglish (US)
JournalReliability Engineering and System Safety
Publication statusAccepted/In press - Nov 19 2016
Externally publishedYes



  • Accelerated failure time model
  • Imperfect maintenance
  • Operating condition
  • Preventive maintenance policy

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Industrial and Manufacturing Engineering
  • Applied Mathematics

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