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Estimation of the thickness of thin metal sheet using laser generated ultrasound

 

作者: R. J. Dewhurst,   C. Edwards,   A. D. W. McKie,   S. B. Palmer,  

 

期刊: Applied Physics Letters  （AIP Available online 1987）
卷期: Volume 51, issue 14  

页码: 1066-1068

 

ISSN:0003-6951

 

年代: 1987

 

DOI:10.1063/1.98793

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A noncontacting technique has been developed to measure the thickness of thin metal sheet by using a pulsed laser to generate both symmetric and antisymmetric Lamb waves. These have been detected with a laser interferometer. Analysis of the waveforms allows an estimation of the sheet thickness and accuracies to within 2% are attainable on sheets as thin as 27 &mgr;m.

 

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