Scanning acoustic microscopy as a tool for quantitative characterisation of damage in CFRPs

S. L. Gao, J. K. Kim

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Destructive and non-destructive evaluation (NDE) techniques are discussed for characterisation of impact damage in carbon-fibre-reinforced composites (CFRPs). Special focus is placed on quantitative analysis of delaminations present at individual laminar interfaces of the composite by the use of scanning acoustic microscopy (SAM). Three distinct ultrasonic techniques in the pulse-echo mode, namely the conventional B-scan analysis, ply-by-ply C-scanning, and time-of-flight (TOF) analysis, have been used successfully to determine the depth and the lateral extent of delamination at individual layers. The SAM results correlate well with observations from cross-section fractography.

Original languageBritish English
Pages (from-to)345-354
Number of pages10
JournalComposites Science and Technology
Volume59
Issue number3
DOIs
StatePublished - Feb 1999

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Impact behaviour
  • C. Delamination
  • D. Non-destructive testing
  • Scanning acoustic microscopy (SAM)

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