Reliability-based optimization of maintenance scheduling of mechanical components under fatigue

P. Beaurepaire, M. A. Valdebenito, G. I. Schuëller, H. A. Jensen

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

This study presents the optimization of the maintenance scheduling of mechanical components under fatigue loading. The cracks of damaged structures may be detected during non-destructive inspection and subsequently repaired. Fatigue crack initiation and growth show inherent variability, and as well the outcome of inspection activities. The problem is addressed under the framework of reliability based optimization. The initiation and propagation of fatigue cracks are efficiently modeled using cohesive zone elements. The applicability of the method is demonstrated by a numerical example, which involves a plate with two holes subject to alternating stress.

Original languageEnglish
Pages (from-to)24-40
Number of pages17
JournalComputer Methods in Applied Mechanics and Engineering
Volume221-222
DOIs
StatePublished - 1 May 2012

Keywords

  • Cohesive zone element
  • Crack propagation
  • Optimal maintenance scheduling
  • Reliability-based optimization
  • Sensitivity

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