Abstract
Woven and non-woven carbon fibre laminates were subjected to drop-weight impact at energies of up to seven Joules. The damaged laminates were tested to differing periods of O-tension and O-compression fatigue, and then static residual strength tests were performed. The non-woven composite showed greater losses in static strength after impact than the mixed-woven composite, particularly when tested in compression. After tensile fatigue, significant improvements in residual strength were recorded, which coincided with the observation of micro-delaminations throughout the laminate. After compressive fatigue there was little change in residual strength.
Original language | British English |
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Pages (from-to) | 301-305 |
Number of pages | 5 |
Journal | Composites |
Volume | 14 |
Issue number | 3 |
DOIs | |
State | Published - Jul 1983 |
Keywords
- carbon fibres
- composite materials
- drop tests
- epoxy resins
- fatigue testing
- laminates
- residual strength
- woven fabrics