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Proceedings Paper

Evaluation of small defects in carbon-fiber-reinforced composites using ultrasonic pulse echo amplitude
Author(s): Brian Stephen Wong; Tan Kha Sheng; Guo Ningqun; Tui Chen Guan
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Paper Abstract

Two methods -- the empirical constants and decibel drop -- for sizing defects, which are very close to the probe, in fiber reinforced composites using the pulse echo ultrasonic inspection method were developed and experimental data obtained. The methods relate the reduction in signal amplitude from a defect which is smaller than the probe diameter to the signal from a defect which is equal to or larger than the probe diameter. The empirical constants method was confirmed to produce a higher accuracy than the decibel drop method.

Paper Details

Date Published: 20 March 1997
PDF: 5 pages
Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); doi: 10.1117/12.269811
Show Author Affiliations
Brian Stephen Wong, Nanyang Technological Univ. (Singapore)
Tan Kha Sheng, Nanyang Technological Univ. (Singapore)
Guo Ningqun, Nanyang Technological Univ. (Singapore)
Tui Chen Guan, Republic of Singapore Air Force (Singapore)

Published in SPIE Proceedings Vol. 2921:
International Conference on Experimental Mechanics: Advances and Applications
Fook Siong Chau; C. T. Lim, Editor(s)

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