Electromagnetic acoustic transducers for use in ultrasound inspection systems

作者: Andrew May , Jian Li , Roman Heinrich Koch

DOI:

关键词: Electromagnetic coilElectromagnetic acoustic transducerRadio frequencyPole pieceNon-contact ultrasoundEngineeringUltrasoundTransducerAcousticsSignal

摘要: An ultrasound system for inspecting an object is provided. The includes electromagnetic acoustic transducer (EMAT) and a pulser-receiver system. EMAT configured to generate signals representative of the area being inspected comprises flux concentrating non-conductive pole piece separating radio frequency (RF) coil magnet. coupled receive convert signal electrical signals.

参考文章(21)
Peter J. Suhr, Robert A. Brooks, Terrance R. Banach, Magnetic and ultrasonic objects testing apparatus ,(1982)
Daniel T. Mac Lauchlan, Paul J. Latimer, Detection of corrosion fatigue in boiler tubes using a spike EMAT pulser ,(1998)
Ralph D. Murphy, Jimmy W. Hancock, Daniel T. Maclauchlan, Electromagnetic acoustic transducer (emat) inspection of cracks in boiler tubes ,(2000)
Daniel T. MacLauchlan, Method for determining liquid level in a container using an electromagnetic acoustic transducer (EMAT) Journal of the Acoustical Society of America. ,vol. 110, pp. 1718- ,(1996)
Bob P. J. van Oorschot, Wilhemus H. van den Berg, Marinus H. Homs, Transducing device for contactless ultrasonic inspection of pipelines or tubings ,(1985)
John H. Flora, Jonathan D. Buttram, High temperature electromagnetic acoustic transducer ,(1997)
Daniel T. MacLauchlan, Wayne M. Latham, EMATS for spot weld examination Journal of the Acoustical Society of America. ,vol. 111, pp. 1512- 1512 ,(1999) , 10.1121/1.1479042
John Flora, Flexible electromagnetic acoustic transducer sensor Journal of the Acoustical Society of America. ,vol. 122, pp. 17- ,(2005) , 10.1121/1.2756394