Local buckling of stitched composite laminate

Due to relatively low interlaminar strength, delamination is a common failure mode of composite laminates. Through-thickness stitching is shown to improve the delamination resistance of laminated composites. Under in-plane compressive loading, significant strength reduction occurs due to coupling be...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 1999-01, Vol.30 (8), p.833-840
Main Authors: Pan, T.S, Herrington, P.D
Format: Article
Language:English
Subjects:
Applied sciences
B. Delamination
B. Strength
E. Stitching
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
Polymer industry, paints, wood
Technology of polymers
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Summary:Due to relatively low interlaminar strength, delamination is a common failure mode of composite laminates. Through-thickness stitching is shown to improve the delamination resistance of laminated composites. Under in-plane compressive loading, significant strength reduction occurs due to coupling between delamination and delamination buckling. In this paper, an energy-based model was developed to predict the effect of critical stitching parameters on the delamination buckling strength of stitched laminates. Excellent agreement was found between the model results and a corresponding finite element analysis.
ISSN:1359-8368
1879-1069
DOI:10.1016/S1359-8368(99)00047-5