Acoustic emission waveguide

Details Acoustic emission waveguide Acoustic emission waveguide

1989-12-21

1991-03-19

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73644, 73801, G01P 2924

Patent

active

050000454

ABSTRACT:
An acoustic emission waveguide (10) for holding a test sample (29) in a hostile environment and guiding ultrasonic waves to a transducer (34) disposed in a non-hostile environment. The waveguide (10) includes a flattened test sample attachment end (15) having a flat bar clamp (22) to hold test specimens (29) thereto. The transducer attachment end (17) includes a clamp (32) which holds the transducer (34) firmly against the waveguide end (17) and against a threaded nut (30) which increases the surface area of the end (17) of the waveguide, such that enhanced acoustic transmission to the transducer (34) is achieved. A couplant grease is utilized in the test sample clamp (20) and in the transducer attachment clamp (32) to enhance the transmission of acoustic energy from the test sample (29) to the waveguide rod (12) and from the rod (12) to the transducer (34).

REFERENCES:
patent: 4392380 (1983-07-01), Caines
patent: 4510812 (1985-04-01), Feng
patent: 4671114 (1987-06-01), Litzkow et al.
patent: 4783997 (1988-11-01), Lynnworth

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