| 激光激励下厚尺度样品光热参数分布反演 |
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| 引用本文： | 高永伟,俞艳蓉,吕跃凯.激光激励下厚尺度样品光热参数分布反演[J].宁夏工程技术,2012,11(3):220-223. |
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| 作者姓名： | 高永伟 俞艳蓉 吕跃凯 |
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| 作者单位： | 1. 宁夏大学物理电气信息学院,宁夏银川,750021
2. 天津师范大学物理与电子信息学院,天津,300387 |
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| 摘 要： | 为了实现厚尺度样品光热参数分布反演的目的,提出并建立厚尺度样品光热参数的反演模型,采用光热技术,正则化方法、格林函数法及奇异值分解方法,进行了激光致热正反问题的理论计算及数值模拟,分别在样品上下表面采集信号,反演得到了厚尺度样品内有2个光吸收层的模拟结果.结果表明,该方法有较好的稳定性和实用性.
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| 关 键 词： | 脉冲激光 厚尺度 光热参数 分布反演 |
Distribution inversion of photo-thermal parameters for thick samDles under laser excitation |
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| Affiliation: | GAO Yongwei, YU Yanrong, LU Yuekai(1.School of Physics and Electrical Information Engineering, Ningxia University, Yinchuan 750021, China; 2.School of Physics and Electrics Information, Tianjin Normal University, Tianjin 300387, China) |
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| Abstract: | In order to achieve thick scale samples photothermal parameter distribution of inversion, an inversion model of photothermal parameters for thick scale sample is put forward and established. Theoretical calculation and numerical simulation for laser induced thermal, both forward and inverse problems, have been competed with photo-thermal technique, regularization method, Green function method and singular value decomposition method. Simulation results, which two light absorption layers are in thick scale sample, achieve success though the inversion signal gathered from the upper and nether surface of sample respectively. Results show the method has a good stability and usability. |
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| Keywords: | pulsed laser thick measure photo-thermal parameter distribution inversion |
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