Geometrical modeling of laser ablation

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Proceedings titleICALEO Conference Proceedings
ConferenceICALEO 2002, October 14th-17th 2002, Scottsdale Arizona
AbstractRecent advances in the laser machining technology have made it possible to fabricate parts and features with high accuracy and precision, using high-powered, short-pulsed, Q-switched lasers. To determine the machining parameters to obtain desired geometrical quality, an understanding of the relationship between the process parameters and the resulting surface profile is necessary. In the present study, we adopt a geometrical approach, which, coupled with the material properties and machining process parameters, yields a model for the surface profile of the region ablated by a laser pulse. Energy incident upon an infintesimal area of the surface is transferred in the outward normal direction, and the depth of the ablation depends on the laser-material interaction and the process parameters. This determines the modified surface profile an infintesimal time later, yielding a nonlinear partial differential equation, which is then integrated to determine the profile after a given time period. Theoretical predictions and the experimental results are compared and discussed.
Publication date
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21272976
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Record identifier0eb4e847-d7a7-4e83-907c-7d799b072c9b
Record created2014-12-03
Record modified2016-05-09
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