Optical NDT of delaminated plates under shear wave excitation

S. I. Ishak; W. K. Chiu; Gui-Rong Liu; Siak-Piang Lim; Huai Min Shang

doi:10.1117/12.429593

13 June 2001 Optical NDT of delaminated plates under shear wave excitation

S. I. Ishak, W. K. Chiu, Gui-Rong Liu, Siak-Piang Lim, Huai Min Shang

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429593
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

Adhesive bonding has been accepted as an important process in the manufacturing and repair industries. However, the tendency of delamination at the bonded region due to improper bonding procedures, and unfavorable loading conditions and service environment has necessitated development of reliable inspection techniques for ensuring the structural integrity of these bonded structures. Optical inspection techniques have, over the last three decades since the invention of the laser, gained wide acceptance because they are non-destructive and non-contacting, and accurate measurements in the order of light-wavelengths may be obtained very rapidly. Optical flaw-detection generally requires the application of a load-increment on the structure, the response of the illuminated surface of the structure is then compared with that of a non-defective structure. The load-increments used are in various forms, such as vacuum stressing, heating, static mechanical loads, and steady-state mechanical excitations.

Citation Download Citation

S. I. Ishak, W. K. Chiu, Gui-Rong Liu, Siak-Piang Lim, and Huai Min Shang "Optical NDT of delaminated plates under shear wave excitation", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429593

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