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Title of Journal: Meccanica

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Abbravation: Meccanica

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Springer Netherlands

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DOI

10.1016/0377-2217(90)90279-k

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1572-9648

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Numerical calculation of temperature and surface t

Authors: Peter Weidmann Ulrich Weber Siegfried Schmauder Giancarlo Pedrini Wolfgang Osten
Publish Date: 2015/06/12
Volume: 51, Issue: 2, Pages: 279-289
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Abstract

In this paper a numerical procedure is presented to calculate a laser ablation process for ceramic thick film coatings The code is required to cover temperature dependent material data projected beam intensities and inhomogeneous coating–substrate combinations to calculate the hole shape geometry the temperature distribution under the surface and the ablation rate per pulse Therefore the ablation speed was calculated by an Arrhenius equation while the temperature distribution was simulated by means of the heat conduction equation which is solvable by a finite differences scheme Hence an adaptive mesh is used and the expansion of the code to three spatial dimensions enables the simulation of more complex ablation geometries The simulation time was held low by introducing actualization frequencies where critical and time consuming steps were only run if necessary A validation of the numerical simulation was done by comparing the calculated temperature depth distribution and hole geometry with micrographs of experimental ablations

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