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

Michael F. Modest | Zendy

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

Author(s) -

Michael F. Modest

Publication year - 1996

Publication title -

journal of heat transfer

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.722

H-Index - 126

eISSN - 1528-8943

pISSN - 0022-1481

DOI - 10.1115/1.2822698

Subject(s) - transient (computer programming) , pulse (music) , materials science , laser , machining , pulsed laser , optics , ablation , magnitude (astronomy) , laser beam machining , laser ablation , thermal conduction , pulse width modulation , mechanics , computer science , physics , engineering , composite material , laser beams , electrical engineering , astronomy , detector , metallurgy , aerospace engineering , operating system , voltage

Approximate, quasi-onedimensional conduction models have been developed to predict the chang- ing 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. 2 Nomenclature

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