Electromagnetic transducer

Details Electromagnetic transducer Electromagnetic transducer

1977-05-31

1978-08-08

Queisser, Richard C.

Measuring and testing

Vibration

By mechanical waves

73623, G01N 2904

Patent

active

041049225

ABSTRACT:
An electromagnetic transducer is provided for ultrasonically inspecting conductive material as the material moves relative to the transducer. A coil is positioned in the field created by a magnet so that the conductors of the coil are transverse to the magnetic field. The coil is located predominately near the leading side of the magnet where flux is concentrated as the magnet and material move toward each other.

REFERENCES:
patent: 2519367 (1950-08-01), Gunn et al.
patent: 3535624 (1970-10-01), Wood
patent: 3850028 (1974-11-01), Thompson et al.
J. H. Meier, Analog No-Contact Transducer, I.B.M. Tech. Disclosure Bulletin, vol. 17, No. 11, pp. 3250-3251, Apr. 1975.
G. M. Berkin, Magnetic Tachometer, I.B.M. Tech. Disclosure Bulletin, vol. 3, No. 3, Aug. 1960.
W. D. Wallace, Electromagnetic Generation of Ultrasound in Metals, International Journal of Nondestructive Testing, vol. 2, No. 4, 1971, pp. 309-334.

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