Transducer forming compression and shear waves for use in acoust

Details Transducer forming compression and shear waves for use in acoust Transducer forming compression and shear waves for use in acoust

1986-09-29

1987-10-20

Kyle, Deborah L.

Acoustics

Geophysical or subsurface exploration

Well logging

181402, 367 25, 367 31, 367 75, 367156, 367168, 367912, G01V 140, G01V 1143

Patent

active

047008032

ABSTRACT:
For use in acoustic logging, an acoustic wave transducer system forming both compression and shear waves is disclosed, the system having the preferred form of a plurality of radially directed magnetostrictive expansion means, being N in number, each having a transducer plate affixed to the outer end thereof and further including means for providing a current to a coil wound thereabout forming flux initiating magnetostrictive expansion and contraction to form compression or shear waves.

REFERENCES:
patent: 2190666 (1940-02-01), Kallmeyer
patent: 3475722 (1969-10-01), White
patent: 3593255 (1971-07-01), White
patent: 3931533 (1976-01-01), Raso et al.
patent: 4139806 (1979-02-01), Kanber et al.
patent: 4383591 (1983-05-01), Ogura

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