Shear horizontal circumferential wave EMAT design for pipeline inspection based on FEM
2020 ◽
Vol 64
(1-4)
◽
pp. 913-919
Keyword(s):
The electromagnetic acoustic transducer (EMAT) is widely used in In-Line Inspection of gas pipeline. However, the transduction efficiency of the EMAT transmitter is lower compared with the traditional piezoelectric transducer and needs improving. To enhance the amplitude of the received signal, an improved periodic-permanent-magnet EMAT is provided as well as its construction method to generate shear horizontal guided waves propagating in the circumferential direction. By designing a racetrack coil and magnetic array with the same radian of the annular pipeline, the EMAT is more suitable to generate the circumferential wave in the pipeline. The performance of the EMAT transmitter has been assessed with the validated finite element model.
2017 ◽
Vol 14
(02)
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pp. 1750008
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2020 ◽
Vol 62
(8)
◽
pp. 494-497
2011 ◽
Vol 26
(02)
◽
pp. 101-118
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2012 ◽
Vol 622-623
◽
pp. 142-146
◽
Keyword(s):
2010 ◽
Vol 43
(6)
◽
pp. 519-526
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2014 ◽
Vol 46
(3)
◽
pp. 491-500
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Keyword(s):
2021 ◽
pp. 095440622110424
Keyword(s):