Generation mechanisms for laser ultrasonics

Adam D. Friedman; Mark K. Hinders; Eric I. Madaras; Robert F. Anastasi

doi:10.1117/12.339856

8 February 1999 Generation mechanisms for laser ultrasonics

Adam D. Friedman, Mark K. Hinders, Eric I. Madaras, Robert F. Anastasi

Proceedings Volume 3585, Nondestructive Evaluation of Aging Materials and Composites III; (1999) https://doi.org/10.1117/12.339856
Event: Nondestructive Evaluation Techniques for Aging Infrastructures and Manufacturing, 1999, Newport Beach, CA, United States

Abstract

Although laser ultrasound is a promising technique for many applications, the signal-to-noise ratio of laser ultrasound is poorer than for contact ultrasonics. In this paper we present some of our current work in optimizing the excitation of laser ultrasound in composite materials. We are characterizing laser generated ultrasound as a function of laser parameters, composite material properties, and their interaction. Experimental results for a number of different laser wavelengths and pulse widths, for several materials, are presented.

Citation Download Citation

Adam D. Friedman, Mark K. Hinders, Eric I. Madaras, and Robert F. Anastasi "Generation mechanisms for laser ultrasonics", Proc. SPIE 3585, Nondestructive Evaluation of Aging Materials and Composites III, (8 February 1999); https://doi.org/10.1117/12.339856

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