G - Physics – 01 – K
Patent
G - Physics
01
K
354/29, 349/35
G01K 13/00 (2006.01) G01K 11/24 (2006.01) G01M 17/02 (2006.01) G01N 29/00 (2006.01)
Patent
CA 1191244
ABSTRACT OF THE DISCLOSURE A method for nondestructively monitoring the internal temperature of objects having poor thermal con- ductance, such as tires, includes the initial steps of determining the internal temperature of a reference object or a representative portion thereof at a plurality of internal temperatures (T), measuring a plurality of pulse propa- gation times (tT) taken by an ultrasonic frequency pulse signal to propagate through the reference object or a representative portion thereof at the plurality of internal temperatures (T), and establishing a relationship between the determined plurality of internal temperatures (T) and the associated plurality of pulse propagation times (tT). Thereafter the unknown internal temperature (Tu) of the object to be monitored may be found by measuring the pulse propagation time (tTu) taken by an ultrasonic frequency pulse signal to propagate therethrough and determining the unknown internal temperature (Tu) from correlating the measured pulse propagation time (tTu) at the unknown internal temperature (Tu) to the relationship. Where the propagation paths in the sample object and object to be monitored have significantly different lengths, the aforesaid relationship may be made independent of the dimensions of both objects.
426143
Firestone Tire & Rubber Company (the)
Robic Robic & Associes/associates
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