A general problem of pulse laser heating of a slab

An attempt to solve the heat diffusion equation of the laser heating problem is made by suggesting a solution which satisfies the physical and mathematical requirements of the problem. This was done by considering a constant laser irradiance for the cases of constant and temperature-dependent optica...

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Bibliographic Details
Published inOptics and laser technology Vol. 25; no. 3; pp. 155 - 162
Main Authors Hassan, A.F., El-Nicklawy, M.M., El-Adawi, M.K., Hemida, A.A.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.1993
Elsevier Science
Subjects
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Heat conduction
heat diffusion
Heat transfer
laser heating
optical absorptance
Physics
heat diffusion
optical absorptance
laser heating
Melting
Pulse generators
Irradiation
Slabs
Heat transfer
Thermal conduction
Penetration depth
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Summary:An attempt to solve the heat diffusion equation of the laser heating problem is made by suggesting a solution which satisfies the physical and mathematical requirements of the problem. This was done by considering a constant laser irradiance for the cases of constant and temperature-dependent optical absorbance of the slab front surface. For both cases, expressions for the temperature profile in the slab material, its front and rear surface temperatures, the thermal penetration depth and the time required to initiate damage (melting) are obtained for intervals less or greater than the transit time. As an illustrative example, computations are carried out on an Al-slab.
ISSN:0030-3992
1879-2545
DOI:10.1016/0030-3992(93)90059-O