Quantitative experimental measurements of matrix cracking and delamination using acoustic emission

JJ Scholey, PD Wilcox, MR Wisnom, MI Friswell

Research output: Contribution to journalArticle (Academic Journal)peer-review

91 Citations (Scopus)

Abstract

Quantitative measurements of the amplitude and angular variation of acoustic emission (AE) events due to matrix cracking and delamination in large quasi-isotropic composite plate specimens are reported. A procedure for determining the minimum specimen size necessary to make quantitative measurements is presented. The amplitude of AE events is quoted as the absolute surface displacement of different guided wave modes and can therefore be used as the input to forward models of the AE process. Matrix cracking events are found to be dominated by the S0 guided wave mode and have a pronounced amplitude variation with angle. Events due to delamination growth are dominated by the A0 guided wave mode and have no clear angular dependence.
Translated title of the contributionQuantitative experimental measurements of matrix cracking and delamination using acoustic emission
Original languageEnglish
Pages (from-to)612 - 623
Number of pages12
JournalComposites Part A: Applied Science and Manufacturing
Volume41 (5)
DOIs
Publication statusPublished - May 2010

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