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Proceedings Paper

Flaw detection in a partially clamped plate using comparative DSPI
Author(s): Cho Jui Tay; Huai Min Shang; Chenggen Quan
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Paper Abstract

The paper presents a method to determine defects on a partially clamped plate using comparative digital speckle pattern interferometry (DSPI). The flaw locations are determined using fringe compensation. In flaw detection of a partially-clamped plate which contains a centric flaw, overcrowded fringe pattern is observed. When fringe compensation is applied, the overcrowded background fringes are removed leaving only fringes indicating the defective region. The results in this study show that the proposed method is effective in detecting both the location and size of the defects. Partially-clamped square plates of sides 80mm which contain centric circular flaws are loaded by incremental pressure and the results show that comparative DSPI is capable of flaw detection. Theory of the method and experimental results are presented.

Paper Details

Date Published: 9 October 2000
PDF: 6 pages
Proc. SPIE 4221, Optical Measurement and Nondestructive Testing: Techniques and Applications, (9 October 2000); doi: 10.1117/12.402584
Show Author Affiliations
Cho Jui Tay, National Univ. of Singapore (Singapore)
Huai Min Shang, National Univ. of Singapore (Singapore)
Chenggen Quan, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 4221:
Optical Measurement and Nondestructive Testing: Techniques and Applications
FeiJun Song; Frank Chen; Michael Y.Y. Hung; H.M. Shang, Editor(s)

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