Synthetic aperture ultrasonic testing apparatus with shear and l

Details Synthetic aperture ultrasonic testing apparatus with shear and l Synthetic aperture ultrasonic testing apparatus with shear and l

1982-10-18

1984-11-13

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73626, 73642, 73628, G01N 2900

Patent

active

044818220

ABSTRACT:
An ultrasonic synthetic aperture testing apparatus comprises transmitting/receiving sections having an ultrasonic wave probe for transmitting and receiving ultrasonic waves at multiple points on the surface of a steel material, an operation section for accumulating the received signals corresponding to the distance between the multiple points and a reproduction point in a desired region of the material under testing, and a display section for displaying an image formed as a result of this accumulation operation. The ultrasonic wave probe is provided with vibrators corresponding to the respective vibration modes so that two kinds of ultrasonic waves in different vibration modes may be transmitted and received. The accumulation section is provided with a mechanism which performs accumulation and arithmetic operation for the two kinds of waves in different modes.

REFERENCES:
patent: 2912854 (1959-11-01), Schubring
patent: 3548642 (1970-12-01), Flaherty et al.
patent: 3712119 (1973-01-01), Cross
patent: 3868847 (1975-03-01), Gunkel
patent: 3938372 (1976-02-01), Sproule
patent: 4005258 (1977-01-01), Dory
patent: 4038865 (1977-08-01), Flambard et al.
patent: 4317369 (1982-03-01), Johnson
patent: 4328567 (1982-05-01), Dodge

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