Geometrical effects in the low velocity impact response of CFRP

W. J. Cantwell, J. Morton

Research output: Contribution to journalArticlepeer-review

135 Scopus citations

Abstract

The influence of specimen geometry on the low velocity impact response of a series of CFRP laminates has been studied. Damage initiation and development in a range of composite beams have been assessed using a number of techniques including optical microscopy and ultrasonic C-scanning. Two forms of damage initiation have been highlighted, a top surface contact failure in short thick targets and a lower surface flexural failure in long thin laminates. The subsequent development of damage has been shown to depend strongly upon the energy-absorbing capability of the structure, and this has been further highlighted by assessing the geometrical dependence of the perforation threshold. Finally, in order to assess the impact response of a more representative structure, a series of drop-weight impact tests have been conducted on a range of circular panels.

Original languageBritish English
Pages (from-to)39-59
Number of pages21
JournalComposite Structures
Volume12
Issue number1
DOIs
StatePublished - 1989

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