| 激光超声无损检测 |
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| 引用本文： | 周辛庚,何存富.激光超声无损检测[J].实验力学,1996,11(4):434-441. |
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| 作者姓名： | 周辛庚 何存富 |
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| 作者单位： | 清华大学 |
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| 摘 要： | 本文介绍自行研制的非接触式激光超声激励和检测系统，采用共焦式法布里—珀珞干涉仪实现对纳米量级微幅单次超声窄脉冲的检测，并应用该系统进行激光超声探伤及测定材料弹性常数的研究，实验结果表明激光超声技术是有效而且实用的
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| 关 键 词： | 激光超声，无损检测，材料弹性常数 |
Laser Uitrasonic Techniques for Non-destructive Testing |
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| Zhou Xingeng,He Cunfu.Laser Uitrasonic Techniques for Non-destructive Testing[J].Journal of Experimental Mechanics,1996,11(4):434-441. |
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| Authors: | Zhou Xingeng He Cunfu |
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| Institution: | Tsinghua University |
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| Abstract: | A laser ultrasonic generating and non contact detecting system has been developed.The weak generated ultrasonic signal of nanosecond duration and nanometer amplitude can be detected with a confocal Fabry Perot interferometer (CFPI).It can be applied for determination of elastic constants of material and inspection of diffusion bonds.The experimental results show that laser ultrasonic technique is practical and effective. |
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| Keywords: | laser ultrasonics non destructive testing elastic constant |
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