Method and apparatus for measuring the mechanical anisotropy of

Details Method and apparatus for measuring the mechanical anisotropy of Method and apparatus for measuring the mechanical anisotropy of

1986-05-22

1987-12-22

Tokar, Michael J.

Measuring and testing

Vibration

By mechanical waves

73152, 73597, 367 31, G01V 140, E21B 4900

Patent

active

047139684

ABSTRACT:
The azimuthal direction of the mechanical anisotropy of a material is measured by using a first transducer to transmit shear acoustic energy through the material and a second transducer, cross-polarized with respect to the first transducer, to receive the shear acoustic energy after it has traveled through the material. Amplitude and phase of the cross-polarized shear acoustic energy are measured as a function of the azimuthal rotation of the shear acoustic energy transducers with respect to the material.

REFERENCES:
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patent: 4631963 (1986-12-01), Sprunt et al.
patent: 4631964 (1986-12-01), Sprunt et al.
patent: 4641520 (1987-02-01), Mao
"A New Method for Shear-Wave Logging", Choro Kitsunezaki, Geophysics, vol. 45, No. 10 (Oct. 1980), pp. 1489-1506).
J. Szilard, Miscellaneous Testing Problems and Methods, Ultrasonic Testing, John Wiley & Sons Ltd., 1982, pp. 599-625.
N. N. Hsu, Generation . . . Rotatable Transducer, Rev. Sci. Inst., vol. 46, No. 7, Jul. 1975.

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