Failure prediction of graphite/epoxy laminates with induced intermittent surge in applied load during fatigue

Diwakar N. Kedlaya, Assimina A. Pelegri

Research output: Contribution to journalConference articlepeer-review

Abstract

An analytical model, backed by numerical simulation, describing the behavior of the energy release rate of composite laminates subjected to fatigue overloads is presented. The model establishes that accumulation of damage due to intermittent surge in applied load reduces the energy release rate, G, of the material. Thus, in the case of cyclic loading with overloads, it is essential to model the failure using a damage growth law that incorporates the damage accumulation due to the overloads. The results obtained in this study, have no restrictive assumptions regarding the specimen or the delamination thickness, T and h respectively, and are presented over varying mode-mixity and h/T ratios.

Original languageEnglish (US)
Pages (from-to)95-100
Number of pages6
JournalAmerican Society of Mechanical Engineers, Aerospace Division (Publication) AD
Volume66
StatePublished - 2001
Event2001 ASME International Mechanical Engineering Congress and Exposition - New York, NY, United States
Duration: Nov 11 2001Nov 16 2001

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Space and Planetary Science

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