A method based on singularity theory to predict edge delamination of laminates
Identifieur interne : 00C847 ( Main/Curation ); précédent : 00C846; suivant : 00C848A method based on singularity theory to predict edge delamination of laminates
Auteurs : D. Leguillon [France]Source :
- International journal of fracture [ 0376-9429 ] ; 1999.
Descripteurs français
- Pascal (Inist)
- Concentration contrainte, Elasticité, Rupture, Matériau stratifié, Effet bord, Fissure rive, Epaisseur couche, Fissure superficielle, Interface, Défaillance, Singularité, Méthode singularité, Délaminage, Limite libre, Traction, Approximation asymptotique, Méthode numérique, Défaut surface, Microfissure, Entaille, Ténacité, Etude expérimentale, Propriété matériau, Matériau composite, 8140N.
- Wicri :
- topic : Matériau composite.
English descriptors
- KwdEn :
- Asymptotic approximation, Composite materials, Delamination, Edge crack, Edge effect, Elasticity, Experimental study, Failures, Free boundary, Interfaces, Layer thickness, Layered materials, Materials properties, Microcracks, Notches, Numerical method, Ruptures, Singularity, Singularity method, Stress concentration, Surface cracks, Surface defect, Tenacity, Traction.
Abstract
Delamination starting from a stress free edge is the main mode of failure of cross-ply laminates. The analysis of singularities and resulting stress concentrations at interfaces along these edges are not sufficient to provide a satisfying model of onset mechanisms. In particular, the model is by far less sensitive to the layers thickness than observed in traction experiments. A refined asymptotic process is proposed which takes into account the existence of surface flaws (micro-cracks or notches). Numerical results prove that this model is much more in agreement with the experiments. Moreover, the knowledge of the interface toughness, in addition with the experiments, allows to estimate a characteristic fracture length, a kind of process zone. It is a material property and in a first approximation it arises to be of the same order of magnitude than the characteristic inhomogeneity length of the components, i.e. the fibers diameter.
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Pascal:00-0243138Le document en format XML
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Curie, tour 66, case 162, 4 place Jussieu</s1><s2>75252 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">00-0243138</idno><date when="1999">1999</date><idno type="stanalyst">PASCAL 00-0243138 INIST</idno><idno type="RBID">Pascal:00-0243138</idno><idno type="wicri:Area/PascalFrancis/Corpus">005F92</idno><idno type="wicri:Area/PascalFrancis/Curation">000178</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">006167</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">006167</idno><idno type="wicri:doubleKey">0376-9429:1999:Leguillon D:a:method:based</idno><idno type="wicri:Area/Main/Merge">00D880</idno><idno type="wicri:Area/Main/Curation">00C847</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">A method based on singularity theory to predict edge delamination of laminates</title><author><name sortKey="Leguillon, D" sort="Leguillon, D" uniqKey="Leguillon D" first="D." last="Leguillon">D. Leguillon</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Modélisation en Mécanique - CNRS URA0229 Université P. et M. Curie, tour 66, case 162, 4 place Jussieu</s1><s2>75252 Paris</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">International journal of fracture</title><title level="j" type="abbreviated">Int. j. fract.</title><idno type="ISSN">0376-9429</idno><imprint><date when="1999">1999</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">International journal of fracture</title><title level="j" type="abbreviated">Int. j. fract.</title><idno type="ISSN">0376-9429</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Asymptotic approximation</term><term>Composite materials</term><term>Delamination</term><term>Edge crack</term><term>Edge effect</term><term>Elasticity</term><term>Experimental study</term><term>Failures</term><term>Free boundary</term><term>Interfaces</term><term>Layer thickness</term><term>Layered materials</term><term>Materials properties</term><term>Microcracks</term><term>Notches</term><term>Numerical method</term><term>Ruptures</term><term>Singularity</term><term>Singularity method</term><term>Stress concentration</term><term>Surface cracks</term><term>Surface defect</term><term>Tenacity</term><term>Traction</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Concentration contrainte</term><term>Elasticité</term><term>Rupture</term><term>Matériau stratifié</term><term>Effet bord</term><term>Fissure rive</term><term>Epaisseur couche</term><term>Fissure superficielle</term><term>Interface</term><term>Défaillance</term><term>Singularité</term><term>Méthode singularité</term><term>Délaminage</term><term>Limite libre</term><term>Traction</term><term>Approximation asymptotique</term><term>Méthode numérique</term><term>Défaut surface</term><term>Microfissure</term><term>Entaille</term><term>Ténacité</term><term>Etude expérimentale</term><term>Propriété matériau</term><term>Matériau composite</term><term>8140N</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Matériau composite</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Delamination starting from a stress free edge is the main mode of failure of cross-ply laminates. The analysis of singularities and resulting stress concentrations at interfaces along these edges are not sufficient to provide a satisfying model of onset mechanisms. In particular, the model is by far less sensitive to the layers thickness than observed in traction experiments. A refined asymptotic process is proposed which takes into account the existence of surface flaws (micro-cracks or notches). Numerical results prove that this model is much more in agreement with the experiments. Moreover, the knowledge of the interface toughness, in addition with the experiments, allows to estimate a characteristic fracture length, a kind of process zone. It is a material property and in a first approximation it arises to be of the same order of magnitude than the characteristic inhomogeneity length of the components, i.e. the fibers diameter.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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