Acoustic microscope

Details Acoustic microscope Acoustic microscope

1984-04-19

1986-03-25

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

G01N 2900

Patent

active

045775044

ABSTRACT:
An acoustic microscope of the type of mechanical scanning in which a single transducer works to generate an acoustic beam as well as to detect echoes reflected from the specimen. An echo reflected from an interface between an acoustic lens and an acoustic propagation medium is detected, and the detected intensity is used as a reference to display the distribution of attenuation factors of the specimen in a two-dimensional manner. Among the signals representing the distribution of attenuation factors of the specimen, furthermore, only those signals having intensities that lie within a predetermined range are displayed to obtain a picture of the specimen that represents the distribution of attenuation factors of a predetermined range only.

REFERENCES:
patent: 3482434 (1969-12-01), de Gowan et al.
patent: 3548641 (1970-12-01), Mitchell
patent: 4386530 (1983-06-01), Kanda et al.

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