Acoustic imaging method and apparatus for nondestructive evaluat

Details Acoustic imaging method and apparatus for nondestructive evaluat Acoustic imaging method and apparatus for nondestructive evaluat

1990-10-26

1992-03-31

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

73644, G03B 4206, G01N 2900

Patent

active

051013827

ABSTRACT:
An acoustic imaging method for nondestructive evaluation of materials comprises the steps of measuring the temperature dependence of the acoustic wave transmittance of the material in advance, cooling the material to a temperature at which its acoustic wave transmittance is high, and carrying out acoustic imaging.

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Smith et al., "An Acoustic Microscope for Industrial Applications", IEEE Transaction on Sonics & Ultrasonics, SU-32, 1985.
Atalar, A., "An Angular-Spectrum Approach to Contrast in Reflection Acoustic Microscopy", J. Appl. Phys., 49(10), Oct. 1978.
Adachi et al., "High Frequency Ultrasonic Studies of Polyethylene", Polymer, vol. 22, Aug. 1981.
Tsao et al., "Ultrasonic Imaging Analysis of Component Integrity", In Review of Progress in Quantitative Nondestructive Evaluation, vol. 3, Proc. of 10th Ann. Review, Santa Cruz, CA, 7-12 Aug. 1983.
Hartmann et al., "Immersion Apparatus for Ultrasonic Measurements in Polymers", J. Acoust. Soc. Amer., vol. 56, #5 (Nov. '74).
Paddison, G. W., "An Ultrasonic Immersion Apparatus for the Determination of . . . ", Proc. IEEE Ultrasonics Symposium, 502-506 (1979).

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