Measuring and testing – Vibration – By mechanical waves
Patent
1991-03-18
1992-10-20
Williams, Hezron E.
Measuring and testing
Vibration
By mechanical waves
73644, 73629, 73761, G01N 2924, G01N 2910
Patent
active
051560500
ABSTRACT:
An ultrasonic probe for ultrasonically testing screws includes an ultrasonic transducer array having a plurality of ultrasonic transducers. The ultrasonic transducers selectively operate as transmitters and receivers. Coupling bodies of solid material are each acoustically coupled to a respective one of the ultrasonic transducers. Each of the coupling bodies have a free coupling surface facing away from the respective ultrasonic transducer. The coupling surfaces are adapted to the shape of the surface of a head of a screw to be tested. The coupling surfaces are centered on the head of the screw. A method for operating an ultrasonic probe includes placing and centering the coupling surfaces on the surface of the head of the screw. Different ultrasonic transducers are operated in at least one of transmission and reception modes in each of a plurality of measuring steps, for locating and characterizing a flaw in the material of the screw.
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patent: 3759090 (1973-09-01), McFaul et al.
patent: 4014208 (1977-03-01), Moore et al.
patent: 4864178 (1989-09-01), Bjurling et al.
Achtzehn Hans-Jurgen
Schmid Rudi
Finley Rose M.
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Williams Hezron E.
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