Evaporative Cutting of a Semitransparent Body With a Moving CW Laser

[+] Author and Article Information
H. Abakians

University of Southern California, Department of Mechanical Engineering, Los Angeles, CA 90089-1453

M. F. Modest

The Pennsylvania State University, Department of Mechanical Engineering, University Park, PA 16802

J. Heat Transfer 110(4a), 924-930 (Nov 01, 1988) (7 pages) doi:10.1115/1.3250594 History: Received November 21, 1986; Online October 20, 2009


The formation of a groove by partial evaporation of a moving semi-infinite and semitransparent solid is considered. Evaporative removal of material is achieved by focusing a high-power, highly concentrated Gaussian laser beam of continuous wave (CW) onto the surface of the solid. Surface heat losses due to radiation and convection are assumed to be negligible, and conductive losses are treated in an approximate fashion using a simple integral method. The relevant nonlinear partial differential equations are solved numerically, and results for groove depth and shape are presented for a variety of laser and solid parameters.

Copyright © 1988 by ASME
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