Finite element model of laser-generated surface acoustic waves in coating-substrate system

被引：0
|
作者：
Xu, Baiqiang [1 ,2 ]
Shen, Zhonghua [1 ]
Ni, Xiaowu [1 ]
Lu, Jian [1 ]
Wang, Yawei [2 ]
机构：
[1] Dept. of Applied Physics, Nanjing Univ. of Sci. and Technol., Nanjing 210094, China
[2] Faculty of Science, Jiangsu University, Zhenjiang 212013, China
来源：
Journal of Applied Physics | 1600年 / 95卷 / 04期
关键词：
Coatings - Finite element method - Laser applications - Light propagation - Mathematical models - Substrates - Surface waves - Thermal effects - Thermoelasticity;
D O I：
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中图分类号：
学科分类号：
摘要：
A study was conducted on the generation of ultrasound in coating-substrate systems subjected to laser irradiation quantitatively in the thermoelastic regime by employing the finite element model. As such, numerical results were calculated in two configurations: a slow layer on a fast substrate and a fast layer on a slow substrate. As a result, a normal dispersion was observed in the case of a slow layer on a fast substrate while an anomalous dispersion was observed in the case of a fast coating on a slow substrate.
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页码：2109 / 2115
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