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纵向带状裂隙形貌的逆时偏移超声成像

徐琰锋 胡文祥

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纵向带状裂隙形貌的逆时偏移超声成像

徐琰锋, 胡文祥

Ultrasonic imaging for appearance of vertical slot by reverse time migration

Xu Yan-Feng, Hu Wen-Xiang
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  • 传统的工业超声成像方法通常只能确定缺陷的位置与横向尺寸,无法获得缺陷的形貌信息. 一些特殊的缺陷,如纵向裂纹,是典型的例子. 基于多阵元技术,开展了固体介质缺陷逆时偏移超声成像方法的数值与实验研究. 针对铝块平底纵裂纹及内部纵裂纹两种传统方法无法有效成像的缺陷,首先开展了单分量逆时偏移成像方法研究,给出了基于数值仿真的逆时偏移成像结果以及基于多阵元超声成像实验系统实验测试的逆时偏移成像结果. 进一步开展了基于多分量位移检测与转换横波分离的逆时偏移成像方法研究,并提出了基于新型多分量激光干涉仪进行检测的思路. 数值仿真结果证实了多分量逆时偏移图像重建结果可以克服单分量方式的缺点,得到明显优于单分量检测时的图像.
    The problem in traditional industrial ultrasonic imaging methods is the difficulty to obtain the appearance or the shape of defects inside solid materials although the methods have the ability to detect and determine the position and lateral dimensions. These special defects, like the vertical slot or crack, are typical examples. Based on the multi-element array ultrasonic technique, the numerical and experimental studies on reverse time migration (RTM) ultrasonic imaging for metalic materials are carried out. In this paper, the objects in detecting and imaging experiments are aluminum samples with slot intersecting the bottom or interior slot, which cannot be effectively detected by traditional ultrasonic methods. First the single component ultrasonic field for RTM imaging is studied to obtain RTM ultrasonic imaging results based on numerical simulation and experimental measurements using a multi-element array ultrasonic testing system. Then, the RTM imaging techniques based on multi-component ultrasonic displacement field detection and converted shear wave separation are further studied, and a new approach using a multi-component laser interferometer is proposed. Numerical simulation results verify that the multi-component RTM imaging reconstructive method can overcome the shortcomings of single component method, and obtain better image quality.
    • 基金项目: 国家自然科学基金(批准号:11374230)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant No. 11374230).
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    Zhang B X, Wang C H, Lai P X 2006 Chin. Phys. Lett. 23 875

    [3]
    [4]

    Zhang B X, Shi F F, Wu X M, Gong J J, Zhang C G 2010 Chin. Phys. Lett. 27 094301

    [5]
    [6]

    Yu L L, Shou W D, Hui C 2011 Chin. Phys. Lett. 28 104302

    [7]

    Zhang B X, Liu D D, Shi F F, Hefeng D 2013 Chin. Phys. B 22 014302

    [8]
    [9]

    Lukomski T, Stepinski T, Kowal J 2012 Insight 54 623

    [10]
    [11]
    [12]

    Ogilvy J A, Temple J A G 1983 Ultrasonics 21 259

    [13]

    Baskaran G, Balasubramaniam K, Krishnamurthy C V, Lakshmana Rao C 2004 Insight 46 537

    [14]
    [15]

    Portzgen N, Gisolf D, Blacquiere G 2007 IEEE T. Ultrason. Ferr. 54 118

    [16]
    [17]
    [18]

    Velichko A, Wilcox P D 2010 J. Acoust. Soc. Am. 127 2377

    [19]

    Whitmore N D 1983 1983 SEG Annual Meeting Las Vegas, Nevada, United States, September 11-15, 1983 p382

    [20]
    [21]

    Baysal E, Kosloff D D, Sherwood J W C 1983 Geophysics 48 1514

    [22]
    [23]
    [24]

    McMechan G A 1983 Geophys. Prospect. 31 413

    [25]
    [26]

    Claerbout J F 1971 Geophysics 36 467

    [27]

    Chattopadhyay S, McMechan G A 2008 Geophysics 73 S81

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    [29]

    Kaelin B, Guitton A 2006 2006 SEG Annual Meeting New Orleans, Louisiana, United States, October 1-6, 2006 p2594

    [30]
    [31]
    [32]

    Arnal B, Pernot M, Tanter M 2010 2010 IEEE Ultrasonics Symposium (IUS) San Diego, California, United States, October11-14, 2010 p1039

    [33]
    [34]

    Anderson B E, Griffa M, Bas P Y L, Ulrich T J, Johonson P A 2011 J. Acoust. Soc. Am. 129 EL8

    [35]
    [36]

    Fink M 1992 IEEE T. Ultrason. Ferr. 39 555

    [37]
    [38]

    Müller S, Niederleithinger E, Bohlen T 2012 International Journal of Geophysics 2012 128465

    [39]

    Wartelle A, Pouet B, Breugnot S 2011 AIP Conference Proceedings-American Institute of Physics San Diego, California, United States, July 18-23, 2010 p265

    [40]
    [41]

    Sun R, McMechan G A 2001 Geophysics 66 1519

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出版历程
  • 收稿日期:  2014-01-29
  • 修回日期:  2014-03-20
  • 刊出日期:  2014-08-05

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