Title:
鋼管のねじり疲労試験方法及びそれに用いる試験体
Document Type and Number:
Japanese Patent JP6668818
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a torsion evaluation test method of a steel pipe base metal itself in which even a high-strength hardened steel pipe can be bonded properly to a bonding flange member; and to provide a test piece used therefor.SOLUTION: Both ends of a torsion test body are formed as outer diameter expansion parts EDP each having an expanded outer diameter in comparison with a steel pipe base metal part to be evaluated without enlarging the inner diameter, and bonded on the whole circumference with a bonding flange member, and then integrated into a flange torsion fatigue tester, to thereby achieve torsion fatigue evaluation of the base metal part. According to this method, a torsion fatigue test of the base metal itself which cannot be achieved hitherto can be achieved.SELECTED DRAWING: Figure 1
Inventors:
Noboru Hasegawa
Manabu Wada
Nikaido Hitoshi
Manabu Wada
Nikaido Hitoshi
Application Number:
JP2016037059A
Publication Date:
March 18, 2020
Filing Date:
February 29, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
G01N3/34; G01N1/28
Domestic Patent References:
| JP11333586A | ||||
| JP2012108102A | ||||
| JP63225714A |
Foreign References:
| WO2006104023A1 |
Attorney, Agent or Firm:
Patent Business Corporation Najima Patent Office