Rapid determination of the fatigue properties of carbon fiber epoxy matrix composite laminates by self heating tests
Résumé
Self-heating measurements under cyclic loading allow a fast estimation of fatigue propertiesof composite materials. The tensile fatigue behavior of a high stress carbon fiber epoxy-matrix composite laminates is examined at room temperature. Tension-tension cyclic fatiguetests are also conducted under load control to obtain high-cycle fatigue stress curves (S-N).The fatigue limits of the different composite lay-ups tested were successfully compared withdata resulting from the self-heating test method on the same laminates. This comparisonreveals a good agreement between the two methods dedicated to stress fatigue limitdetermination. In addition, a tomographic analysis is used to perform comparisons at themicroscale between both fatigue methods. The nonlinear heat transfer laminate theory is usedfor self-heating tests simulation. Self-heating simulations involving conduction, convection,and boundary radiation are performed with the Finite Element code Cast3M.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...