A nonlinear stochastic model of fatigue crack dynamics

Asok Ray, Sekhar Tangirala

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

This paper presents a nonlinear stochastic model for prediction of fatigue crack damage in metallic materials. The model structure allows estimation of the current damage state and prediction of the remaining service life based on the underlying principle of Gauss-Markov processes without solving the extended Kalman filter equation in the Wiener integral setting or the Kolmogorov forward equation in the Itô integral setting. The model results have been verified with experimentally-generated statistical data of time-dependent fatigue cracks for 2024-T3 and 7075-T6 aluminum alloys.

Original languageEnglish (US)
Pages (from-to)33-40
Number of pages8
JournalProbabilistic Engineering Mechanics
Volume12
Issue number1
DOIs
StatePublished - Jan 1997

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Condensed Matter Physics
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering

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