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Fatigue of glass-epoxy composite in three-point-bending with predominant shearing

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2002
auteur(s) Roudet Francine; Desplanques Yannick; Degallaix Suzanne
journal International Journal of fatigue
volume (numéro) 24 (2-4)
  
pages 327 – 337
résumé Unidirectional and multilayer composites are usually subjected to bending, and often fail in fatigue by interlaminar shearing. This work studies new experimental conditions in fatigue, using a three-point-bending test with predominant shearing, while tensile/compressive stresses are significant. The experimental device geometry is validated under monotonic loading by comparison between finite element results and experimental observations. The deflection amplitude vs. fatigue life curve is used as a pseudo-Wöhler curve. An approximate drawing of maximum deformation vs. fatigue life curve is proposed using Fournier's model. Experimental results in fatigue are well accounted for by this model.
mots clés Polymer matrix comoosite; flexural loading; fatigue test method; shearing fatigue strengh; fatigue life prediction; numerical modelling
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