Apparatus and related methods for automatically testing and anal

Details Apparatus and related methods for automatically testing and anal Apparatus and related methods for automatically testing and anal

1996-10-16

1998-07-07

Dombroske, George M.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

356 71, G01M 1702

Patent

active

057772193

ABSTRACT:
An apparatus and related methods for capturing a digital foot print image of a tire and for extrapolating load-deflection curves of the tire is presented. A frame carries a test pod that is coupled to a tire to perform various tests. In one application, a loading plate couples the tire to a transparent plate on the test pod where a camera captures a digital gray-scale image of the tire foot print. A processor converts the gray-scale image into a pressure map wherein each pixel of the digital image is correlated to a pressure value. In another application, the loading plate couples the tire to a sliding cover plate on the test pod, wherein the loading plate is incremented through a plurality of load values at predetermined inflation pressures. By using two inflation pressures, the processor extrapolates further load-deflection curves for the tire at other inflation pressures. The apparatus also provides a unique way for imparting camber on the tire during the above tests. The data collected from the foot print image and load-deflection curves may be used to analyze the construction, operation, noise generation characteristics and performance of the tire.

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