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	Circumferential and longitudinal defect detection using T(0, 1) mode excited by thickness shear mode piezoelectric elements
	Liu ZH(刘增华) ; He CF(何存富) ; Wu B(吴斌) ; Wang XY(王秀彦)
中文摘要	Different kinds of defects, such as corrosions, notches and cracks etc, exist in pipes. Mode choice is important since unfortunately not all ultrasonic guided wave modes are suitable for these kinds of defect detection. T(0, 1) mode which is non-dispersive is the lowest and fastest torsional mode and most suitable for defect detection in pipes. Two completely different artificial defects including longitudinal and circumferential defects are processed successively in a 4-m-long, 60-mm-OD, 3.5-mm-wall steel pipe. T(0, 1) mode at 45 kHz is excited to detect these defects using thickness shear mode piezoelectric elements. Experimental results show that two kinds of defects are detectable using T(0, 1) mode. Comparing with longitudinal modes, torsional modes are dominant in pipe inspection for their sensitivities to different kinds of defects. ? 2006.
原文出处	http://dlib.edu.cnki.net/kns50/download.aspx?filename=3o0ViZWNBxGerQUehdlTvR0dKpFdVBnWYBzMRtyK3VWNwtWV4UlYNFVdhp0d2ZlZ1s0dZlUcWlWZ5hVRJdlarElRqh0ZyA1Kq9GO5MDbxB1NUFTdn1mYVpUVLJjWtVGSZhGWaJFTIVXQMlGVvdUZwg2Z6ZmRhRUZ&tablename=CJFD2009&dflag=pdfdown 全文链接
内容类型	期刊论文
源URL
专题	北京工业大学
推荐引用方式 GB/T 7714	Liu ZH,He CF,Wu B,et al. Circumferential and longitudinal defect detection using T(0, 1) mode excited by thickness shear mode piezoelectric elements[J].
APA	刘增华,何存富,吴斌,&王秀彦.
MLA	刘增华,et al."Circumferential and longitudinal defect detection using T(0, 1) mode excited by thickness shear mode piezoelectric elements".

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