Electromagnetic acoustic transducer for tube inspection

Details Electromagnetic acoustic transducer for tube inspection Electromagnetic acoustic transducer for tube inspection

G - Physics

01

N

349/42

G01N 29/04 (2006.01) B06B 1/04 (2006.01) G01N 29/24 (2006.01)

Patent

CA 1160335

-8- ELECTROMAGNETIC TRANSDUCER FOR TUBE INSPECTION Abstract of the Disclosure An electromagnetic transducer for exciting selected modes of ultrasonic vibration in a tubular body. The transducer includes a plurality of rows of permanent magnets of al- ternating polarity with a coil provided about the magnets whereby a current is conducted through the magnetic fields. The rows of magnets are provided in carriers which are yieldably biased towards the inner surface of a tubular body during inspection.

362705

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