Two-layer Medium Ultrasonic Phased Array Total Focusing Method Imaging Based on Sparse Matrix

被引：4
|
作者：
Hu H. [1 ,2 ]
Du J. [1 ]
Li Y. [2 ]
Zhou Z. [2 ]
机构：
[1] School of Automotive and Mechanical Engineering, Changsha University of Science and Technology, Changsha
[2] School of Mechanical Engineering and Automation, Beihang University, Beijing
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2017年 / 53卷 / 14期
关键词：
Sparse matrix; Total focusing method; Two-layer medium; Ultrasonic phased array;
D O I：
10.3901/JME.2017.14.128
中图分类号：
学科分类号：
摘要：
Ultrasonic phased array total focusing method has the advantages of high accuracy and dynamic focusing in all regions, but the problem of long imaging time limits of the actual industrial application. In order to improve the imaging efficiency of phased array total focusing method, taking commonly used wedge coupling detection for example, the delay time of all array elements are calculated in two-layer medium based on Fermat principle, a two-layer medium phased array total focusing method is built. By reducing the number of transmitting/receiving elements, with the same effective aperture as the whole array, the weighting function of transmitting/receiving elements distribution is studied, and a two-layer medium corrected sparse total focusing method is proposed. Taking the side-drilled holes with arc distribution for example, two images of total focusing method and sparse total focusing method in the two-layer medium are formed, and the effects on defect quantitative precision and calculation efficiency are discussed when the transmitter array is sparse. The results show that the corrected sparse total focusing method can improve the imaging efficiency obviously in the meanwhile the imaging accuracy is kept. For a 32-element transducer, when the number of the sparse transmitting elements reaches 8, the error between sparse matrix and full matrix is less than 5.2%, while the computational efficiency is nearly fourfold improved. © 2017 Journal of Mechanical Engineering.
引用
收藏
页码：128 / 135
页数：7
相关论文
共 20 条
  • [1] Lin L., Yang P., Zhang D., Et al., Review of phased array ultrasonic testing for thick wall cast austenitic stainless steel pipeline welds, Journal of Mechanical Engineering, 48, 4, pp. 12-20, (2012)
  • [2] Jin S., Yang X., Chen S., Et al., Development and application of ultrasonic phased array inspection technology, Journal of Electronic Measurement and Instrumentation, 28, 9, pp. 925-934, (2014)
  • [3] Zhang J., Drinkwater B.W., Wilcox P.D., Effects of array transducer inconsistencies on total focusing method imaging performance, NDT & E International, 44, 4, pp. 361-368, (2011)
  • [4] Verkooijen J., Boulavinov A., Sampling phased array a new technique for ultrasonic signal processing and imaging, Insight-Non-Destructive Testing and Condition Monitoring, 50, 3, pp. 153-157, (2008)
  • [5] Zhou Z., Li Y., Zhou W., Ultrasonic phased array post-processing imaging techniques: A review, Journal of Mechanical Engineering, 52, 6, pp. 1-11, (2016)
  • [6] Holmes C., Drinkwater B.W., Wilcox P.D., Post-processing of the full matrix of ultrasonic transmit-receive array data for non-destructive evaluation, NDT & E International, 38, 8, pp. 701-711, (2005)
  • [7] Bulavinov A., Dalichow M., Kroning M., Et al., Quantitative ultrasonic testing of pressurized components using sampling phased array, National Seminar on Non-Destructive Evaluation, pp. 437-449, (2006)
  • [8] Russell J., Long R., Duxbury D., Et al., Development and implementation of a membrane-coupled conformable array transducer for use in the nuclear industry, Insight-Non-Destructive Testing and Condition Monitoring, 54, 7, pp. 386-393, (2012)
  • [9] Li C., Pain D., Wilcox P.D., Et al., Imaging composite material using ultrasonic arrays, NDT & E International, 53, pp. 8-17, (2013)
  • [10] Sutcliffe M., Weston M., Dutton B., Et al., Real-time full matrix capture for ultrasonic non-destructive testing with acceleration of post-processing through graphic hardware, NDT & E International, 51, pp. 16-23, (2012)
12