Paper Title:

Fatigue Crack Initiation and Propagation in Thick Multilayer Metallic Laminates

Periodical Key Engineering Materials (Volumes 417 - 418)
Main Theme Advances in Fracture and Damage Mechanics VIII
Edited by M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee
Pages 929-932
DOI 10.4028/www.scientific.net/KEM.417-418.929
Citation Z. Sharif Khodaei et al., 2009, Key Engineering Materials, 417-418, 929
Online since October, 2009
Authors Z. Sharif Khodaei, P.M. Baiz, M.H. Aliabadi
Keywords Aluminum Laminate, Fatigue Crack Growth, Fatigue Crack Initiation, Finite Element Model (FEM), Multilayer
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Abstract

The objective of this study is to investigate and develop a methodology to predict fatigue crack initiation and propagation in metallic laminate structures. The fatigue crack initiation is based on strain-life approach. After a crack has initiated, Stress Intensity Factors (SIF) are obtained and the subsequent propagation is described following Paris law type equations (NASGRO). Detailed Stress-Strain distribution in each layer is obtained from FE models, including the effect of the transition from flat to slant cracks on the fatigue crack growth.