Compressive failure of laminates containing an embedded wrinkle; experimental and numerical study

By Supratik Mukhopadhyay, Mike I. Jones, S. Hallett. 2015

163 citations recorded by the source corpus.

An experimental and numerical study has been carried out to understand and predict the compressive failure performance of quasi-isotropic carbon–epoxy laminates with out-of-plane wrinkle defects. Test coupons with artificially induced fibre-wrinkling of varied severity were manufactured and tested. The wrinkles were seen to significantly reduce the pristine compressive strength of the laminates. High-speed video of the gauge section was taken during the test, which showed extensive damage localisation in the wrinkle region. 3D finite element (FE) simulations were carried out in Abaqus/Explicit with continuum damage and cohesive zone models incorporated to predict failure. The FE analyses captured the locations of damage and failure stress levels very well for a range of different wrinkle configurations. At lower wrinkle severities, the analyses predicted a failure mode of compressive fibre-failure, which changed to delamination at higher wrinkle angles. This was confirmed by the tests.

Subfields: Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/cf13ceb4a92b227b17b66209ceaf86c240263e12

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In Mechanics of Materials

Citations in the corpus

The fatigue of carbon fibre reinforced plastics - A review (2019, background): “Out-of-plane waviness affects the static compressive strength and stiffness of composites, and decreases its fatigue life (C-C) [95, 96, 97].”
Failure mechanisms and damage evolution of laminated composites under compression after impact (CAI): Experimental and numerical study (2018, unknown): “Compressive failure strengths for the exact layups used here are not available but results from literature for layups similar to the Ps and Ss cases are 643 MPa [36] for a [452/902/-452/02]3S laminate and 675 MPa [37] a [45/90/-45/0]4S laminate.”