Nondestructive evaluation of fatigue changes of composite structure by laser-excited ultrasonic waves

Alexander A. Karabutov; Natalia B. Podymova

doi:10.1117/12.301515

31 March 1998 Nondestructive evaluation of fatigue changes of composite structure by laser-excited ultrasonic waves

Alexander A. Karabutov, Natalia B. Podymova

Proceedings Volume 3396, Nondestructive Evaluation of Materials and Composites II; (1998) https://doi.org/10.1117/12.301515
Event: Non-Destructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1998, San Antonio, TX, United States

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.

Citation Download Citation

Alexander A. Karabutov and Natalia B. Podymova "Nondestructive evaluation of fatigue changes of composite structure by laser-excited ultrasonic waves", Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); https://doi.org/10.1117/12.301515

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