储罐底板缺陷的相控阵超声导波的图像重建
Image Reconstruction of Phased Ultrasonic Guided Wave Testing for Storage Tank Floor Defect
摘 要
探讨了利用相控阵方法控制纵波探头阵列提高超声导波激励能量的方法。针对实际中不同的可达检测范围, 提出了可用的探头阵列布置方式。为提高超声信号的接收灵敏度, 引入了数字聚焦方法, 并给出了利用数字聚焦进行图像重建的基本公式。试验证明, 利用该公式进行图像重建是可行的, 能够对缺陷的位置和形貌等参数作出较为准确的反演。
相控阵
储罐底板
图像重建
Ultrasonic guided wave
Phased array
Storage tank floor
Image reconstruction
Abstract
The method of utilizing the control method of phased array was discussed. An arrayed longitudinal wave probe was controlled to enhance the excitation energy. Viable probe layouts were presented according to different size of inspection area. In order to improve the sensitivity of receiving signals, digital focusing method was adopted and the equation for image reconstruction was presented. The experiment showed that it was viable using this equation to locate the defect position and determine its size.
中图分类号 TG115.28
所属栏目 2010年远东无损检测论坛论文精选
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备注王维斌(1972-), 男, 博士, 高级工程师。从事油气管道运营和管理的安全保障研究工作。
引用该论文: WANG Wei-Bin,FENG Zhan-Jun,AI Mu-Yang,WANG Kun. Image Reconstruction of Phased Ultrasonic Guided Wave Testing for Storage Tank Floor Defect[J]. Nondestructive Testing, 2010, 32(11): 847～849
王维斌,冯展军,艾慕阳,王 琨. 储罐底板缺陷的相控阵超声导波的图像重建[J]. 无损检测, 2010, 32(11): 847～849
被引情况:
【1】禹化民,王维斌,吕小青,朱子东,刘清松,庞笑, "储罐底板缺陷兰姆波检测的影响因素",无损检测 37, 19-24(2015)
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参考文献
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【2】徐彦廷, 刘富君, 王亚东, 等.大型立式储罐综合检测技术[J].无损检测, 2007, 29(8): 482-485.
【3】Greve D W, Zheng P, Oppenheim I J. Excitation of longitudinal and Lamb waves in plates by edge-mounted transducers[C]. Proc IEEE Ultrasonics Conference. New York, 2007.
【4】Zhu W, Rose R L. Lamb wave generation and reception with time delay periodic linear arrays: a BEM simulation and experimental study[J]. IEEE Trans Ultrasonics, Ferroelectrics, and Frequency Control, 1999(46): 654-664.
【5】Yang Y, Chen Y, Fu De. A new method of phased-array ultrasonic used in NDT[J]. Sensor World, 2003(5): 5-8.
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