eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2013-06-10 10 1 17 22 281 article Heating of a Finite Slab with CW Laser in Relation to Cooling Conditions- at the Rear Surface M.K. El-Adawi 1 I.A.Al-Nuaim 2 Department of Physics, Faculty of Education, Ain Shams University, Helliopolis, Cairo Egypt. Physics Department, Faculty of Science for Girls, King Faisal University P.O. Box 838 Dammam 31113 , Saudi Arabia.

Heating a slab induced by laser irradiance is studied. The heat diffusion equation is solved using the Laplace integral transform method. The critical time tm required to initiate melting is obtained for the elements: Aluminum (Al), Gold (Au), Germanium (Ge) and Silicon (Si). Good cooling conditions at the rear surface of the slab are assumed. The obtained results show that for the considered elements and for such sources of high power density, cooling conditions at the rear surface are not of pronouncing effect. The effect of laser power density on the critical time required to initiate melting is predominant.

 https://www.materialsciencejournal.org/vol10no1/heating-of-a-finite-slab-with-cw-laser-in-relation-to-cooling-conditions-at-the-rear-surface/ Laser heating Laser damage Heat diffusion equation Laplace transform