Method and apparatus for detecting ply defects in pneumatic...

Details Method and apparatus for detecting ply defects in pneumatic... Method and apparatus for detecting ply defects in pneumatic...

G - Physics

01

M

G01M 17/02 (2006.01)

Patent

CA 2099355

ABSTRACT OF THE DISCLOSURE METHOD AND APPARATUS FOR DETECTING PLY DEFECTS IN PNEUMATIC TIRES In a method and apparatus for detecting ply defects in a pneumatic tire, measurements on the tire are obtained at two levels of tire inflation, and the data obtained in the two measurements are compared. Broken reinforcement cords in the tire cause changes in the peaks of the data obtained at the two inflations that is out of proportion when compared to data changes observed in non-damaged tires. The apparatus of the invention provides means for inflating tires to predetermined pressures and has displacement sensors for measuring peaks and valleys in the sidewall of a tire. The apparatus may also include a computer for collecting data, analyzing data, and providing a signal when a defective tire is recognized.

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