Patent ID: 11959850
Assignee: THE YOKOHAMA RUBBER CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method, for evaluating ozone deterioration of a vulcanized rubber material, in which a test sample of a vulcanized rubber material is placed under a preset placement condition in a test tank having a predetermined ozone concentration and a change over time in a surface state of the test sample is determined, the method comprising:
acquiring detection data by detecting, over time, with a laser sensor disposed facing a surface of the test sample that has been placed in the test tank, a distance from the laser sensor to the surface;
storing each of the detection data in a database of a storage unit; and
determining a change in the surface state of the test sample between a plurality of points in time, based on the detection data,
wherein the determining of the change in the surface state is performed automatically by comparing indication data indicating a degree of progression of ozone deterioration stored in the storage unit and each of the detection data by using a computation device, the degree of progression of ozone deterioration with respect to the surface state of the test sample in each of the detection data, based on the indication data.