Title:
PROOF STRESS ESTIMATION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/095486
Kind Code:
A1
Abstract:
A proof stress estimation method including: a determination step in which shot peening conditions for applying maximum residual stress to a target object comprising a metal material are determined; a shot peening step in which shot peening of the target object occurs under the shot peening conditions; a measurement step in which the residual stress in the object after shot peening is measured; and an estimation step in which the proof stress of the target object is estimated on the basis of the measured residual stress and the relationship between the proof stress of the target object and the pre-obtained maximum residual stress.
Inventors:
KOBAYASHI YUJI (JP)
MATSUI AKINORI (JP)
MATSUI AKINORI (JP)
Application Number:
PCT/JP2019/029540
Publication Date:
May 14, 2020
Filing Date:
July 26, 2019
Export Citation:
Assignee:
SINTOKOGIO LTD (JP)
International Classes:
G01L1/25; B24C1/10; G01N3/00; G01N23/207
Foreign References:
| US7159425B2 | 2007-01-09 |
Other References:
KOBAYASHI, YUJI ET AL.: "Influences of mechanical properties and retained austenite content on shot-peening characteristics", TRANSACTIONS OF JAPAN SOCIETY FOR SPRING RESEARCH, vol. 2012, no. 57, 30 May 2012 (2012-05-30), pages 9 - 15
OKADA, HIDEKI ET AL.: "Relationship among specimen's hardness, residual stress distribution and yield stress on the difference of shot peening methods", JOURNAL OF HIGH PRESSURE INSTITUTE OF JAPAN, vol. 41, no. 5, 11 November 2003 (2003-11-11), pages 233 - 242
OKADA, HIDEKI ET AL.: "Relationship among specimen's hardness, residual stress distribution and yield stress on the difference of shot peening methods", JOURNAL OF HIGH PRESSURE INSTITUTE OF JAPAN, vol. 41, no. 5, 11 November 2003 (2003-11-11), pages 233 - 242
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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