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Proceedings Paper

Nondestructive evaluation of fatigue changes of composite structure by laser-excited ultrasonic waves
Author(s): Alexander A. Karabutov; Natalia B. Podymova
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Paper Abstract

Wide-band acoustic spectroscopy with laser excitation of ultrasound was carried out for glass-fiber-reinforced composite samples. Attenuation coefficient of ultrasonic waves in these samples was measured in the frequency range 1 divided by 20 MHz. Resonant peaks of ultrasound attenuation were found for green-state composite samples caused by periodic structure of composite. Transformation of ultrasound attenuation spectra was observed for samples after service life testing because of fatigue changes of composite structure.

Paper Details

Date Published: 31 March 1998
PDF: 7 pages
Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); doi: 10.1117/12.301515
Show Author Affiliations
Alexander A. Karabutov, Moscow State Univ. (United States)
Natalia B. Podymova, Moscow State Univ. (Russia)

Published in SPIE Proceedings Vol. 3396:
Nondestructive Evaluation of Materials and Composites II
Steven R. Doctor; Carol A. Nove; George Y. Baaklini, Editor(s)

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