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RESEARCH PAPERS: Heat Transfer in Manufacturing

Transient Model for CW and Pulsed Laser Machining of Ablating/Decomposing Materials—Approximate Analysis

[+] Author and Article Information
M. F. Modest

The Pennsylvania State University, University Park, PA 16802

J. Heat Transfer 118(3), 774-780 (Aug 01, 1996) (7 pages) doi:10.1115/1.2822698 History: Received September 01, 1991; Revised May 07, 1996; Online December 05, 2007

Abstract

Approximate, quasi-one-dimensional conduction models have been developed to predict the changing shape of holes, single grooves, or overlapping grooves carved by ablation into a thick solid that is irradiated by a moving laser source. For CW or pulsed laser operation a simple integral method is presented, which predicts shapes and removal rates with an accuracy of a few percent, while requiring one order of magnitude less CPU time than a three-dimensional, numerical solution. For pulsed operation a “full-pulse” model is presented, computing the erosion from an entire pulse in a single step, and reducing computer time by another order of magnitude.

Copyright © 1996 by The American Society of Mechanical Engineers
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