Post-impact fatigue performance of carbon fibre laminates with non-woven and mixed-woven layers

✍ Scribed by W. Cantwell; P. Curtis; J. Morton

• Book ID: 115836291
• Publisher: Elsevier Science
• Year: 1983
• Weight: 672 KB
• Volume: 14
• Category: Article
• ISSN: 0010-4361
• DOI: 10.1016/0010-4361(83)90020-4

✦ Synopsis

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.