Measuring and testing – Vibration – By mechanical waves
Patent
1995-10-13
1998-03-24
Oda, Christine K.
Measuring and testing
Vibration
By mechanical waves
73597, 73602, G01N 2918
Patent
active
057315213
ABSTRACT:
A method and an apparatus for nondestructive detecting and evaluating chas in the microstructural properties of a material by employing one or more magnetostrictive transducers linked to the material by means of one or more sonic signal conductors. The magnetostrictive transducer or transducers are connected to a pulser/receiver which in turn is connected to an oscilloscope. The oscilloscope is connected to a computer which employs an algorithm to evaluate changes in the velocity of a signal transmitted to the material sample as function of time and temperature.
REFERENCES:
patent: 3699808 (1972-10-01), Ford
patent: 3751977 (1973-08-01), Schilling, Jr.
patent: 4346599 (1982-08-01), McLaughlin
patent: 4377087 (1983-03-01), Rodot
patent: 4879905 (1989-11-01), Chen
Kupperman David S.
Lanagan Michael T.
Yaconi George A.
Dvorscak Mark P.
Moser William R.
Oda Christine K.
Smith Bradley W.
The United States of America as represented by the Department of
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