High temperature ultrasonic testing of materials for internal fl

Details High temperature ultrasonic testing of materials for internal fl High temperature ultrasonic testing of materials for internal fl

1988-08-23

1990-02-06

Chapman, John

Measuring and testing

Vibration

By mechanical waves

73639, G01N 2900, G01N 2904

Patent

active

048980340

ABSTRACT:
An apparatus is disclosed for nondestructive evaluation of defects in hot terials, such as metals and ceramics, by sonic signals, which includes a zirconia buffer in contact with a hot material being tested, a liquid couplant of borax in contact with the zirconia buffer and the hot material to be tested, a transmitter mounted on the zirconia buffer sending sonic signals through the buffer and couplant into the hot material, and a receiver mounted on the zirconia buffer receiving sonic signals reflected from within the hot material through the couplant and the buffer.

REFERENCES:
patent: 3621709 (1971-11-01), Frey
patent: 3732444 (1973-05-01), Miller
patent: 4160387 (1979-07-01), Ihara et al.
patent: 4291577 (1981-09-01), Baum et al.
patent: 4587849 (1986-05-01), Gross
patent: 4703656 (1987-11-01), Bhardwaj

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