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Study and analysis of mechanical andviscoelasticbehavior in flexure of laminatedcomposites

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International Journal of Material Research

Volume 107, Issue 1, 2016, Pages 78-87

Study and analysis of mechanical and

viscoelasticbehavior in flexure of laminated composites

Rafik HALIMI, Boudjema Bezzazi, Ali BADIDI BOUDA, M’hamed Djelloul Abbou, Oussama Mimouni

Abstract: In the present paper, seven laminated composites were thesubject of an experimental study to determine their mechanical and viscoelastic properties by means of dynamic mechanical analysis in a bending configuration. The influenceof the frequency, fiber type and fiber orientation on dynamic mechanical properties of different system composites were investigated. Carbon/epoxy laminates exhibit agreat stiffness when fibers are oriented along the axis ofthe clamps, and the maximum modulus was reported forunidirectional carbon/epoxy laminate [08 plies] with56.4 GPa. The glass transition temperature was found to decrease with the incorporation of fibers and increase with increased frequency. For the Kevlar/epoxy laminate, an increase of 12.5 8C in glass transition temperature wasobserved. This is related to a better interfacial adhesion between epoxy matrix and Kevlar fibers

Keywords : Composite laminate, Dynamic mechanical analysis, Fiber/matrice interface, glass transition temperature

Centre de Recherche en Technologies Industrielles - CRTI - www.crti.dz

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