Abstract

Fibre reinforced polymer (FRP) laminate composites display anisotropic behaviour on account of alternating phases of fibre and matrix in suitable weight fractions. Recent research has focussed on structural analysis of these composites pertaining to various strengths like tensile, compressive, flexural etc. This paper attempts to estimate delamination failure of these laminated composites on basis of “cohesive zone modelling”. Modelling of laminated composites with an open interface area is done in Ansys® Workbench (ACP) as per required weight/volume fraction. The effect of fibre orientation and thickness of lamina is analyzed on force reaction and deformation due to delamination failure in epoxy carbon laminated composite. The longitudinal plies with fibre orientation of 0° are seen to have a very good structural response against delaminating loads as compared to cross ply laminates with a ply fibre orientation of 90°. Also, the deformation corresponding to maximum force reaction in delamination of composite laminate is not affected by increasing or decreasing number of plies.

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