Method and apparatus for non-destructive inspection of tires

Details Method and apparatus for non-destructive inspection of tires Method and apparatus for non-destructive inspection of tires

G - Physics

01

N

349/41

G01N 29/04 (2006.01) G01M 17/02 (2006.01) G01N 29/22 (2006.01) G01N 29/27 (2006.01) G06F 17/00 (2006.01)

Patent

CA 1144634

METHOD AND APPARATUS FOR NON-DESTRUCTIVE INSPECTION OF TIRES ABSTRACT OF THE DISCLOSURE A pulsed through-transmission ultrasonic non-destructive inspection of the internal struc- ture in a tire wall is effected. The transmitted acoustic signals preferably have a frequency of least 40 Khz, are transduced to electrical form, amplified with a relatively long time constant AGC, rectified and integrated during only the initial or leading edge portions of each pulse or burst. The resulting integrated analog signal values thus pro- vided have relative magnitudes which may be displayed or otherwise processed to detect structural anomalies within the tire wall. If plural acoustic transmit- ters are utilized, they are preferably multiplexed such that only a single transducer is activated at a given time.

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