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Numerical simulation of laser-induced transient temperature field in film-substrate system by finite element method |
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| Authors: | BQ Xu ZH Shen J Lu SY Zhang |
| Affiliation: | a Faculty of Science, Jiangsu University, Zhenjiang, Jiangsu 212013, People’s Republic of China b Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, People’s Republic of China c Institute of Modern Acoustics, Nanjing University, Nanjing 210093, People’s Republic of China |
| Abstract: | The transient temperature fields generated by a pulsed laser in film-substrate system are obtained by using the finite element method. Time integrations of the semi-discrete finite element equations are achieved by using approximate one order derivative of temperature. The temperature dependences of material properties are taken into account, which has a great influence on the temperature fields indicated by the numerical results. The pulsed laser-induced transient temperature fields in aluminum/methyl-methacrylate system and aluminum/copper system are obtained, which will be useful in the research on thermoelastic excitation of laser ultrasonic waves in film-substrate system. |
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