Tensile strength of UD-composite laminates with multiple holes

The residual strength of glass fibre reinforced vinyl-ester laminates with multiple holes was investigated through an experimental programme. Different types of structured hole patterns and hole densities were investigated and analysed using digital image correlation strain measuring technique. Thre...

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Bibliographic Details
Published in:Composites science and technology 2010-08, Vol.70 (8), p.1280-1287
Main Authors: Kazemahvazi, S., Kiele, J., Zenkert, D.
Format: Article
Language:English
Subjects:
A. Glass fibres
Applied sciences
B. Strength
C. Notch
Exact sciences and technology
Failure modes
Forms of application and semi-finished materials
Glass fiber reinforced plastics
Glass fibres
Hole density
Laminates
Materials science
Mathematical analysis
Mathematical models
Multiple holes
Notch
Polymer industry, paints, wood
Residual strength
Strength
TECHNOLOGY
Technology of polymers
TEKNIKVETENSKAP
Teknisk materialvetenskap
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Summary:The residual strength of glass fibre reinforced vinyl-ester laminates with multiple holes was investigated through an experimental programme. Different types of structured hole patterns and hole densities were investigated and analysed using digital image correlation strain measuring technique. Three different failure modes could be observed when the hole patterns and the hole densities were a altered. These three failure modes were used as the foundation for a simple yet effective analytical model in order to predict the residual strength of damaged composite specimens. Finally, a number of laminates with randomly distributed holes were tested experimentally. The analytical model can predict the failure mode and failure strength of the experiments with sufficiently good fidelity.
ISSN:0266-3538
1879-1050
1879-1050
DOI:10.1016/j.compscitech.2010.04.005