Shearography for Rapid Nondestructive Evaluation of Bonded Composite Structures

Paper #:
  • 1999-01-0947

Published:
  • 1999-03-01
Citation:
Hung, Y., Luo, W., Lin, L., and Shang, H., "Shearography for Rapid Nondestructive Evaluation of Bonded Composite Structures," SAE Technical Paper 1999-01-0947, 1999, https://doi.org/10.4271/1999-01-0947.
Pages:
9
Abstract:
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.
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