LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

A general energy based fatigue failure criterion for the carbon epoxy composites

Photo from wikipedia

Abstract A normalized energy-based fatigue failure criterion, which employs off-axis stress and strain components to compute strain energy during cyclic loading, is presented in the current research. The new model… Click to show full abstract

Abstract A normalized energy-based fatigue failure criterion, which employs off-axis stress and strain components to compute strain energy during cyclic loading, is presented in the current research. The new model is capable of predicting the fatigue life of unidirectional laminates subjected to tension-tension, compression-compression and tension-compression loading in any arbitrary fiber orientation. Furthermore, the proposed model is used to predict the fatigue life of multidirectional composite laminates under different cyclic loading conditions, including various stress ratios. The model is validated by the experimental data of unidirectional, cross-ply, angle-ply and multidirectional carbon/epoxy composite laminates taken from the literature. In the unidirectional and multidirectional laminates effect of fiber orientation and stress ratio are diminished, respectively. The suggested fatigue model is capable of predicting the fatigue life of angle-ply and cross-ply laminates using limited experimental data. Nonetheless, it does not result in good accuracy for multidirectional laminates with arbitrary lay-up sequence under compression-dominant loadings.

Keywords: fatigue failure; based fatigue; carbon epoxy; energy; failure criterion; energy based

Journal Title: Composite Structures
Year Published: 2020

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.