A micro-mechanics damage approach for fatigue of composite materials

Gasser Abdelal, A Caceres, Ever Barbero

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A new model for fatigue damage evolution of polymer matrix composites (PMC) is presented. The model is based on a combination of an orthotropic damage model and an isotropic fatigue evolution model. The orthotropic damage model is used to predict the orthotropic damage evolution within a single cycle. The isotropic fatigue model is used to predict the magnitude of fatigue damage accumulated as a function of the number of cycles. This approach facilitates the determination of model parameters since the orthotropic damage model parameters can be determined from available data from quasi-static-loading tests. Then, limited amount of fatigue data is needed to adjust the fatigue evolution model. The combination of these two models provides a compromise between efficiency and accuracy. Decomposition of the state variables down to the constituent scale is accomplished by micro-mechanics. Phenomenological damage evolution models are then postulated for each constituent and for the micro-structural interaction among them. Model parameters are determined from available experimental data. Comparison between model predictions and additional experimental data is presented.
Original languageEnglish
Pages (from-to)413-422
Number of pages10
JournalComposite Structures
Volume56
Issue number4
DOIs
Publication statusPublished - Jun 2002

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ceramics and Composites

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