Shearography is an optical technique developed for full-field measurement of surface deformation. It has since been accepted by industry as a practical nondestructive testing technique for evaluating the structural integrity of components and structures. Qualitatively, shearography reveals flaws from flaw-induced, anomalous deformation in the component under inspection, and quantitatively, shearography assesses the detected flaws through back-calculation from the anomalous deformation. This paper demonstrates that, with the use of multiple-frequency acoustical excitation together with the time-integrated shearographic recording technique, rapid and automated assessment of the integrity of adhesive-bonded composite structures can be realized in the actual plant environment.
Shearography for Rapid Nondestructive Evaluation of Bonded Composite Structures
Sae Technical Papers
International Congress & Exposition ; 1999
1999-03-01
Conference paper
English
Shearography for Rapid Nondestructive Evaluation of Bonded Composite Structures
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