ウオータージェットピーニングによる残留応力低減効果の長期安定性評価

橋本 匡史; 大沢 悠介; 伊藤 真介; 亀山 雅司; 平野 伸朗; 千種 直樹; 才田 一幸; 望月 正人; 西本 和俊

doi:10.14920/jwstaikai.2010f.0.25.0

Preprints of the National Meeting of JWS

Session ID : 125

DOI https://doi.org/10.14920/jwstaikai.2010f.0.25.0

Conference information

Host: Japan Welding Society

Evaluation for long term stability of effects of residual stress decreasing by water jet peening

Tadafumi Hashimoto, *Yusuke Osawa, Shinsuke Itoh, Masashi Kameyama, Shinro Hirano, Naoki Chigusa, Kazuyoshi Saida, Masahito Mochizuki, Kazutoshi Nishimoto

Author information

Tadafumi Hashimoto
Graduate School of Engineering, Osaka University
*Yusuke Osawa
Graduate School of Engineering, Osaka University
Shinsuke Itoh
Graduate School of Engineering, Osaka University
Masashi Kameyama
Japan Power Engineering and Inspection Corporation
Shinro Hirano
The Kansai Electric Power Co., Inc.
Naoki Chigusa
The Kansai Electric Power Co., Inc.
Kazuyoshi Saida
Graduate School of Engineering, Osaka University
Masahito Mochizuki
Graduate School of Engineering, Osaka University
Kazutoshi Nishimoto
Graduate School of Engineering, Osaka University

Keywords: Water jet peening, Alloy600, Residual stress relaxation, thermal elastic plastic creep analysis

CONFERENCE PROCEEDINGS FREE ACCESS

Details

Abstract

As the countermeasure against PWSCC, the water jet peening (WJP), which can change tensile stress into the compressive stress, has been applied to welded joints. The stability of the compressive stress induced by WJP has been examined by using ring type specimen processed by WJP.The result has shown that the compressive stress by the WJP on the tensile stressed specimen remains stable in the long term operation at 620K.

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