Prediction of the crack density evolution in multidirectional laminates under fatigue loadings

An innovative procedure is proposed for the prediction of the crack density evolution in multidirectional laminates subjected to cyclic loadings. The crack initiation and propagation phases are treated separately and described by means of a master S-N curve and a Paris-like curve, respectively. A da...

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Bibliographic Details
Published inComposites science and technology Vol. 145; pp. 24 - 39
Main Authors Carraro, P.A., Maragoni, L., Quaresimin, M.
Format Journal Article
LanguageEnglish
Published Barking Elsevier Ltd 16.06.2017
Elsevier BV
Subjects
Composite materials
Crack initiation
Crack propagation
Damage
Density
Evolution
Fatigue failure
Fatigue life
Fatigue strength
Fracture mechanics
Laminates
S N diagrams
Studies
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Summary:An innovative procedure is proposed for the prediction of the crack density evolution in multidirectional laminates subjected to cyclic loadings. The crack initiation and propagation phases are treated separately and described by means of a master S-N curve and a Paris-like curve, respectively. A damage-based multiscale strategy is adopted for the prediction of multiple crack initiation, accounting for the statistical distribution of fatigue strength and crack propagation resistance within a ply. The procedure has been implemented in a Matlab® code for the simulation of the fatigue damage evolution in multi-directional symmetric laminates. Comparisons with experimental results taken from previous works show a very good agreement.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2017.03.013