| 用共焦Fabry—Perot干涉仪探测激光超声信号的研究 |
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| 引用本文： | 何存富,周辛庚.用共焦Fabry—Perot干涉仪探测激光超声信号的研究[J].实验力学,1997,12(1):1-6. |
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| 作者姓名： | 何存富 周辛庚 |
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| 作者单位： | 清华大学 |
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| 摘 要： | 本文给出一种非接触式接收激光超声信号的方法，利用自行研制的实验系统，探测到用ＰＺＴ换能器和脉冲激光产生的超声信号，其信噪比足以满足进一步的电子学信号处理要求。这是将该技术应用于ＮＤＴ中的基础
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| 关 键 词： | F－P干涉仪，激光超声，无损检测 |
Detection of Laser generated Ultrasonic Signal with a Confocal Fabry Perot Interferometer |
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| He Chunfu,Zhou Xinggeng.Detection of Laser generated Ultrasonic Signal with a Confocal Fabry Perot Interferometer[J].Journal of Experimental Mechanics,1997,12(1):1-6. |
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| Authors: | He Chunfu Zhou Xinggeng |
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| Institution: | Tsinghua University |
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| Abstract: | In this paper,a non contact system for detecting laser generated ultrasonic signal is described.With this system,the ultrasonic waves generated with both PZT longitudinal transducer and pulsed laser have been detected,and the ratio of signal to nosie is good enough to satisfy the requirement for further electronical signal procession.This is the foundation of applying this technique to NDT. |
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| Keywords: | Fabry Perot interferometer laser ultrasound non destructive testing |
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