一种基于激光超声的薄层金属材料厚度检测方法研究

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Abstract Traditional ultrasonic technique is failed in measuring the thickness of thin metal for its limitations in limited frequency domain and high attenuation rate. In this work, a novel approach for measurement of thin metal material thickness was presented to solve the problem. The given approach is more suitable in thickness measurement for its broader frequency domain and lower attenuation rate. A new signal feature extraction method was presented at the same time to gain the travel time of the waves. An example of the approach and experimental measurement was given for alloy with different thickness. The experimental results show the reliability of the approach.

Key words： laser-generated ultrasound pulse-echo time domain thickness measurement

Received: 09 January 2017 Published: 15 June 2018

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	Articles by authors
	LIU Yongqiang
	YANG Shixi
	GAN Chunbiao

Cite this article:

LIU Yongqiang,YANG Shixi,GAN Chunbiao. Thickness measurement for thin metal material with the use of laser generated ultrasound[J]. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(12): 147-152.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2018/V37/I12/147

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