Application of Wavelet Analysis for processing the arrival time of AE Waves

机译：小波分析在处理声波到达时间中的应用

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The conventional way for source location of AE signals by calculating arrivaltime differences based on the threshold crossing time has been well developed.This method may be useful for approximate source location on large structures.But with the conventional method, the result of source location is greatlyaffected by the level of threshold voltage and the average value of velocitymeasured in several times . When it is applied for AE signal at small crack'sinitiation and growth, which needs high accuracy for source location, the methodcan't be successful any more. To improve the accuracy, a modal technique and across-correlation method are proposed. Having done some researches on thecharacters of generation and spread of AE waves, we process AE waves by wavelettransform to improve the accuracy of source location.

机译：通过计算到达来确定AE信号源位置的常规方法基于阈值穿越时间的时差已经得到了很好的发展。此方法对于大型结构上的近似源位置可能有用。但是用常规方法，源定位的结果是很大的受阈值电压水平和速度平均值的影响分多次测量。在小裂纹的情况下用于AE信号时起始和生长，需要对源位置进行高精度定位的方法不能再成功了。为了提高准确性，采用了模态技术和提出了互相关方法。对 AE波的产生和传播特性，我们用小波处理AE波进行转换以提高源定位的准确性。

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来源
《15th world conference on non-destructive testing》||p.1-6|共6页
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作者
Yukuan Ma; Hong Gao; JingRong Zhao; Xuezhi Yan; JingQiu Yang;
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正文语种
中图分类组织检查法、非破坏性试验法;
关键词
AE (acoustic emission) signal; arrival time; wavelet analysis;

机译：声发射信号;到达时间;小波分析;

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专利

1. A new method for waveform analysis for estimating AE wave arrival times using wavelet decomposition [J] . Y. Ding, R.L. Reuben, J.A. Steel NDT & E international . 2004,第4期

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2. Efficient processing of water wave records via compressive sensing and joint time-frequency analysis via harmonic wavelets [J] . Valentina Laface, Ioannis A. Kougioumtzoglou, Giovanni Malara, Applied Ocean Research . 2017,第期

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3. Using of wavelet transform in the analysis of AE signals accompanying the process of epoxy resins electrical treeing [J] . Arkadiusz DOBRZYCKI, Stanislaw MIKULSKI Przeglad Elektrotechniczny . 2016,第5期

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4. Application of Wavelet Analysis for processing the arrival time of AE Waves [C] . Yukuan Ma, Hong Gao, JingRong Zhao, World Conference on Non-Destructive Testing . 2000

机译：小波分析在加工AE波到达时间的应用
5. Functions of bounded variation, wavelets, and applications to image processing. [D] . Morgante, Anthony. 2006

机译：有界变异，小波及其在图像处理中的功能。
6. Time-frequency analysis using damped-oscillator pseudo-wavelets: application to electrophysiological recordings [O] . David Hsu, Murielle Hsu, Heidi L. Grabenstatter, -1

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7. Wavelets: A Tutorial in Theory and Applications (Volume 2 in series ‘Wavelet Analysis and its Applications’) Charles K. Chui Academic Press, Harcourt Brace Jovanovich, San Diego, CA, 1992; ISBN 0-12-174590-2,736 pp., hardcover, $69.95. Wavelets and Their Applications Mary Beth Ruskai, Gregory Beylkin, Ronald Coifman, Ingrid Daubechies, Stephane Mallat, Yves Meyer and Louise Raphael, editors Jones and Bartlett, Boston, MA, 1992; ISBN 0-86720-225-4,480 pp., hardcover, $59.95 [O] . Matthew Lundberg 1992

机译：小波：理论与应用的教程（第2卷在“系列”小波分析及其应用中）Charles K. Chui学术出版社，Harcourt Braces Jovanovich，San Diego，CA，1992; ISBN 0-12-174590-2,736 PP，精装，69.95美元。小波及其应用玛丽Beth Ruskai，Gregory Beylkin，Ronald Coifman，Ingrid Daubechies，Stephane Mallat，Yves Meyer和Louise Raphael，编辑Jones和Bartlett，Boston，Ma，Ma，Ma，1992; ISBN 0-86720-225-4,480 PP，精装，59.95美元

Application of Wavelet Analysis for processing the arrival time of AE Waves

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