Method of measuring a sound pressure distribution in a solid bod

Details Method of measuring a sound pressure distribution in a solid bod Method of measuring a sound pressure distribution in a solid bod

1986-11-07

1988-03-29

Laroche, Eugene R.

Optics: measuring and testing

Material strain analysis

With polarized light

73800, 356 33, 356237, G01L 124, G01N 2100

Patent

active

047339632

ABSTRACT:
A method for obtaining quantitative data which relates the sound pressure distribution in a body to an ultrasound pulse waveform which propagates through the body, based on photoelastic measurement and analysis. The method involves producing a first image of the body, into which the ultrasound pulse was launched, by recording the image of linearly polarized straboscopic light which is directed into the body. Thereafter, a second image is taken of the stroboscopic light with the principal axis of the linear polarizer offset by 45.degree. relative to the first image. The first and second images are combined to produce a synthesized image and the above-mentioned quantitative data is derived from the synthesized image.

REFERENCES:
patent: 3763698 (1973-10-01), Suzuki et al.

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