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	Study on the lift-off effect of EMAT
	Huang, Songling ; Zhao, Wei ; Zhang, Yongsheng ; Wang, Shen
	2010-10-12 ; 2010-10-12
关键词	EMAT Lift-off Magnetostriction Eddy current DESIGN Engineering, Electrical & Electronic Instruments & Instrumentation
中文摘要	Non-contact inspection is the main advantage of the electromagnetic acoustic transducer (EMAT). However, it lowers the transduction efficiency between ultrasonic energy and electromagnetic energy. The lift-off of the transducer has a close relationship with transmitting and receiving ultrasonic signals, because it reduces the magnitude of the alternating magnetic field in the specimen. The distribution and intensity of the alternating magnetic field at different lift-off values are simulated in ANSOFT. The relationship between the lift-off and received signals is analyzed through experiments. Results show that the suitable lift-off value for this specific EMAT system should be around 2 mm, considering both sensitivity and stability of the transducer. (C) 2009 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE SA ; LAUSANNE ; PO BOX 564, 1001 LAUSANNE, SWITZERLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78774]
专题	清华大学
推荐引用方式 GB/T 7714	Huang, Songling,Zhao, Wei,Zhang, Yongsheng,et al. Study on the lift-off effect of EMAT[J],2010, 2010.
APA	Huang, Songling,Zhao, Wei,Zhang, Yongsheng,&Wang, Shen.(2010).Study on the lift-off effect of EMAT..
MLA	Huang, Songling,et al."Study on the lift-off effect of EMAT".(2010).

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