Method for representing elastic parameters of object surfaces

Details Method for representing elastic parameters of object surfaces Method for representing elastic parameters of object surfaces

1985-03-15

1986-08-05

Ciarlante, Anthony V.

Measuring and testing

Vibration

By mechanical waves

73579, G01N 2900

Patent

active

046035850

ABSTRACT:
A method for representing elastic parameters of object surfaces by scanning the object surface with a focused acoustic beam and detection of the interferences between the ultrasonic beams specularly reflected at the object surface and the ultrasonic beams emitted from the object surface after excitation of surface waves in which either two raster-shaped scannings of the object surface are carried out at different focus positions relative to the object surface or successive scannings are carried out with acoustic beams of different frequency. Reflection signals associated with identical raster points form a difference signal which is used for representing the image.

REFERENCES:
patent: 4459852 (1984-07-01), Chubachi et al.
patent: 4503708 (1985-03-01), Kino et al.

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