Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1979-08-29
1981-11-03
Myracle, Jerry W.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
73660, G01M 1702
Patent
active
042978769
ABSTRACT:
An ultrasonic, non-destructive inspection system for detecting separations and/or holes in vehicle tires. The system employs a through transmission method at ultrasonic inspection in which the ultrasonic transmitter array and the ultrasonic receiver array are both mounted in air and in a non-contacting, non-critical relationship with the tire undergoing inspection. The inspection is performed in one revolution of the tire.
The ultrasonic transmitters are pulsed and the receivers are sampled during predetermined time intervals which are related to the transmitter/receiver/tire geometry. This eliminates the problems of talking around and standing waves. The problem of transmitter--transmitter interference is eliminated by transmitter frequency separation and transmitter array pointing geometry. The problem wherein tread pattern fluctuations in the received signal interfere with flaw detection is eliminated by the use of a finite sampled data filter whose period is adjusted to the period of the tread pattern.
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AMF Incorporated
Haugen Orrin M.
Myracle Jerry W.
Nikolai Thomas J.
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