Patent ID: 9423320
Filing Date: 2016-08-23
CPC Classification: B60C,B60T,G01M,G01N

Claim Text:
1. A tire rubber index calculating method comprising: a tire frictional energy measuring step of measuring, by a processor and a frictional energy measuring device comprising a force applying device, an image capturing device and a shear force measuring device, tire frictional energies of a tire in plural tire input conditions applied to the tire, the tire frictional energy measuring step including: a setting step including: a sample amount of wear measuring step of measuring, by a Lambourne testing device, the sample amounts of wear of the sample in the measurement conditions that were set and storing the sample amounts of wear that were measured in the memory; and a rubber index calculating step of calculating, by the processor, a rubber index of the tire on the basis of the sample frictional energies and the sample amounts of wear that were measured, wherein the setting step further includes: wherein the sample amount of wear measuring step comprises measuring, by the Lambourne testing device, the sample amount of wear of the sample in the measurement condition that was set in the sample amount of wear measurement condition setting step.