Impact and subsequent fatigue damage growth in carbon fibre laminates

W. J. Cantwell, P. T. Curtis, J. Morton

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The influence of the ply stacking sequence on the impact resistance and subsequent O-tension fatigue performance of carbon fibre laminates has been investigated. Drop-weight impact tests were conducted on a range of 16 ply carbon fibre laminates with either all non-woven plies or mixtures of woven and non-woven plies. Damaged coupons were tested in O-tension fatigue for up to 106 cycles, scanned using an ultrasonic probe and then loaded in tension until failure. The impact resistance and subsequent fatigue performance have been found to be sensitive to the ply stacking sequence. The non-woven composites showed a marked sensitivity to impact loading, but increases in residual static strength were noted after cycling. The inclusion of a woven fabric served to improve the impact resistance of the laminates. Fatigue cycling resulted in considerably improved residual static strengths; by 106 cycles any effect of the impact damage had been removed.

Original languageBritish English
Pages (from-to)113-118
Number of pages6
JournalInternational Journal of Fatigue
Volume6
Issue number2
DOIs
StatePublished - Apr 1984

Keywords

  • composite materials
  • drop tests
  • fatigue
  • laminate stacking sequence
  • residual static strength
  • zero-tension fatigue

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