Measuring and testing – Vibration – By mechanical waves
Patent
1983-10-03
1985-06-18
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
73622, 73626, 73628, G01N 2904
Patent
active
045234680
ABSTRACT:
A first array (A) of ultrasonic transducers transmits ultrasonic shear waves circumferentially around an examined cylindrical object (110). A second array (B) transmits ultrasonic shear waves axially along the examined object. Triggering pulses from a triggering amplifier (22) are switched by a multiplexer (24) to each individual transducer of the first and second arrays. As one of the transducers assumes the role of a transmitting transducer and transmits an ultrasonic wave, the other transducers of the first and second arrays assume a receiving mode to receive reflected ultrasonic components. A wave travel timer (26) measures the duration for an ultrasonic wave to be transmitted from the transmitting transducer to a defect and for a reflected component to propagate from the defect to the receiving transducer. A microprocessor (20) tri-angulates or otherwise computes the location and orientation of a reflective defect from the measured travel time, the spatial relationship of the transmitting and receiving transducers, and the direction of propagation of the transmitted ultrasonic wave.
REFERENCES:
patent: 4160386 (1979-07-01), Jackson et al.
patent: 4354388 (1982-10-01), Diepers et al.
H. Seiger, "Comparison of Three Flaw-Location Methods for Automated Ultrasonic Testing", NDT International, pp. 131-135, Jun. 1982.
Derkacs Thomas
Matay Istvan M.
Murphy Stephan D.
Touhalisky John
Blackhurst Daniel G.
Kreitman Stephen A.
TRW Inc.
LandOfFree
Phased array inspection of cylindrical objects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phased array inspection of cylindrical objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phased array inspection of cylindrical objects will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-975180