Title:
HOSE FATIGUE RESISTANCE EVALUATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/059304
Kind Code:
A1
Abstract:
Provided is a hose fatigue resistance evaluation method with which it is possible to gain a clear picture of deterioration over time in the degree of deformation of hose by repeatedly applying internal pressure. The hose 11 to be evaluated is installed in a fixing frame 2 in a pre-set shape, and in a state in which a distortion gauge 4a and marker 4b are applied to the surface of the hose 11, distortion data is obtained by the distortion gauge 4a in the process of repeatedly applying a predetermined internal pressure P to the hose 11, image data is obtained by capturing images of the outer shape of the hose 11 by means of a camera device 5, and a clear picture of the change in the shape of the hose 11 is obtained between a plurality of time points when internal pressure is the same, on the basis of the distortion data and the image data obtained.
Inventors:
HOU GANG (JP)
Application Number:
PCT/JP2019/029449
Publication Date:
March 26, 2020
Filing Date:
July 26, 2019
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
G01N3/36; G01N3/32
Foreign References:
| JP2007263908A | 2007-10-11 | |||
| JPH08159940A | 1996-06-21 | |||
| JPH04203950A | 1992-07-24 | |||
| JP2003232688A | 2003-08-22 | |||
| US5339677A | 1994-08-23 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
Download PDF:
Previous Patent: HOSE FATIGUE RESISTANCE EVALUATION SYSTEM
Next Patent: RESIN COMPOSITION, CURED OBJECT, AND LAMINATE
Next Patent: RESIN COMPOSITION, CURED OBJECT, AND LAMINATE