Pii: S1359-8368(99)00027-x
نویسنده
چکیده
This paper reviews shearography and its applications for testing of composite structures. Shearography is a laser-based technique for fullfield measurement of surface deformation. Unlike holography, it does not require special vibration isolation; hence it can be employed in field/factory environments. The technique has already received considerable industrial acceptance for nondestructive testing of composite structures. In this application shearography reveals defects in an object by looking for defect-induced deformation anomalies. Other applications include strain measurement, material characterization, residual stress evaluation, vibration studies and 3-D shape measurement. q 1999 Elsevier Science Ltd. All rights reserved.
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