Title:
電気抵抗法を用いた密集亀裂深さ計測方法
Document Type and Number:
Japanese Patent JP7116570
Kind Code:
B2
Abstract:
To provide a measurement method with which it is possible to measure crack depth taking into account the effect on measurement accuracy of the length and the number of pieces of crack.SOLUTION: A dense crack depth measuring method using an electric resistance method includes a step for applying a measured value of the length of crack and/or the number of pieces of crack in an evaluation object and the measured value of a potential difference to an evaluation expression that indicates a correlation among the length of crack and/or the number of pieces of crack occurring on a member surface, a potential difference between one side and other side of the crack in a direction orthogonal to the length direction of the crack, and the depth of the crack, and finding the depth of the crack.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
Kubota Yuki
Kiyotaka Aoki
Kiyotaka Aoki
Application Number:
JP2018063595A
Publication Date:
August 10, 2022
Filing Date:
March 29, 2018
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
G01N27/20; G01B7/26
Domestic Patent References:
| JP2010145375A | ||||
| JP5017558U | ||||
| JP1035357A | ||||
| JP2016161562A | ||||
| JP8313473A | ||||
| JP2001174380A |
Foreign References:
| US20070250277 |
Attorney, Agent or Firm:
SSIP Patent Attorney Corporation