ISSN: 1546-962X
CODEN: JAIOAD
Published Online: 31 January 2005
Page Count: 24

Differentiation of Damage and Failure Mechanisms of Co-Cured Fiber-Reinforced Composite Joints Using Acoustic Emission

Cao, C
Research Scientist, School of Aerospace Engineering, Georgia Tech, Atlanta, GA

Stefan Dancila, D
Assistant Professor, School of Aerospace Engineering, Georgia Tech, Atlanta, GA

(Received 24 March 2004; accepted 29 September 2004)

Abstract

Through feature-based acoustic emission (AE) analysis and supervised clustering, data acquired during monotonic loading can reveal damage initiation, development, and accumulation within a specimen. In this work, AE analysis using a supervised pattern recognition method is carried out on specimens with co-cured composite joints of single lap and single nested overlap configurations. Correlation with physical observations from other techniques suggests that the resulting clusters may be associated with specific damage modes and failure mechanisms.

Keywords:
fiber-reinforced composite, co-cured composite joints, single lap joints, single nested overlap joints, damage and failure mechanisms, acoustic emission, X-ray radiography, optical microscopy, feature-based AE analysis, unsupervised and supervised clustering of AE signals

Paper ID: JAI12772
DOI: 10.1520/JAI12772
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