Thermal Stresses due to a Laser Pulse: Elastic Solution

[+] Author and Article Information
L. G. Hector

Alcoa Technical Center, Alcoa Center, PA 15069-0001

R. B. Hetnarski

Rochester Institute of Technology, Rochester, NY 14623-5604

J. Appl. Mech 63(1), 38-46 (Mar 01, 1996) (9 pages) doi:10.1115/1.2787207 History: Received February 18, 1994; Revised October 26, 1994; Online October 26, 2007


The thermal stress field in an elastic half-space due to a single pulse from a laser is derived for the general case of a mixed-mode structure beam. The mode structure models the output from a cylindrical laser resonator and thus defines a radially symmetric intensity distribution about the beam axis. The functional form of the temporal pulse profile is quite general in that it models the temporal pulse shapes emitted by a laser that is either internally pulsed through radio frequency modulation of its power supply, Q-switched, or mode locked. It also models a continuous beam that is mechanically chopped through external means.

Copyright © 1996 by The American Society of Mechanical Engineers
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