An experimental method to measure the layer thickness and wave velocity of copper-steel composite board without interface echo
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- 作者：Gangfeng Zheng ; gfzheng@emails.bjut.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Wandong Xia ; Liangbo Ma ; Wei Sun ; Chao Sun ; Yi&rsquo ; ao Xu ; Xiaodong Zhao ; Kaifeng Wang
- 关键词：Nondestructive testing (NDT) ; Ultrasonic wave ; FFT ; Error
- 刊名：Measurement
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：91
- 期：Complete
- 页码：77-83
- 全文大小：1522 K
文摘
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The experiment is implemented by using the ultrasonic immersion coupling technique.
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The result shows a maximum relative error percentage of 0.2% with the actual value.
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The method is confirmed valid by both experiment and simulation tests.
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The method can also give same accuracy for another two-layer composite medium.