Studies on Digital Shearography for Testing of Aircraft Composite Structures and Honeycomb-Based Specimen
This paper reviews shearography and its applications for testing of aircraft composite structures and honeycomb-based specimen. Shearography is a laser-based interferometry in conjunction with the digital imaging processing technique for full-field measurement of surface deformation. It reveals defects in an object by looking for defect-induced deformation anomalies. It does not require special vibration isolation, and with the development of a small and mobile measuring device (portable inspection system), it can be employed easily in field/factory environments.
Dongye Sun, Wen-Pei Sung and Ran Chen
H. J. Feng et al., "Studies on Digital Shearography for Testing of Aircraft Composite Structures and Honeycomb-Based Specimen", Applied Mechanics and Materials, Vols. 121-126, pp. 1264-1268, 2012