Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2006-01-24
2006-01-24
Williams, Hezron (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S602000, C073S631000, C600S458000
Reexamination Certificate
active
06988410
ABSTRACT:
A method for determining incipient mechanical failure of an object includes insonifying the object with ultrasonic energy at a selected fundamental frequency. Amplitude data is acquired from the insonified object at the fundamental frequency and at a second harmonic of the fundamental frequency, and a non-linear acoustic image is generated from the amplitude data at the fundamental frequency and the second harmonic frequency.
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EP Search Report, EP04256524, Feb. 15, 2005.
Gigliotti, Jr. Michael Francis
Gilmore Robert Snee
Clarke Penny A.
General Electric Company
Miller Rose M.
Patnode Patrick K.
Williams Hezron
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