Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1467368 | Composites Part A: Applied Science and Manufacturing | 2008 | 12 Pages |
Abstract
The constitutive properties of impact damage zones in composites are determined by iteratively matching an FE model to displacement fields measured optically during post-impact loading. The method is validated on a reference FE model with axisymmetric damage containing four concentric zones having different properties, and examines the influence of measurement noise. Real impact damage zones in quasi-isotropic carbon/epoxy laminates under tension are then analysed and compared to fractography by C-scan to detect delaminations and deplying to detect fibre fracture. Tensile stiffness gradually decreases towards the damage centre, but stiffness reductions are confined to a small central region with fibre fracture.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Pavel Sztefek, Robin Olsson,