TY - GEN
T1 - Influence of grid blast on the fatigue strength improvement by peening
AU - Banno, Yuki
AU - Kinoshita, Koji
AU - Ishikawa, Toshiyuki
AU - Anami, Kengo
N1 - Funding Information:
This study was parts of Japan Society of Steel Construction research committee activities: “Research Committee for Fatigue Strength of Welded Joints (Chair: Prof. Anami in Shibaura institute university, Japan)” The committee members have provided variable assistance in this study. The committee was supported by the Japan Iron and Steel Federation. This financial support is gratefully acknowledged.
Funding Information:
This study was parts of Japan Society of Steel Construction research committee activities: ?Research Committee for Fatigue Strength of Welded Joints (Chair: Prof. Anami in Shibaura institute university, Japan)? The committee members have provided variable assistance in this study. The committee was supported by the Japan Iron and Steel Federation. This financial support is gratefully acknowledged.
Publisher Copyright:
© 2021 Taylor & Francis Group, London
PY - 2021
Y1 - 2021
N2 - In this study, to evaluate the influence of grid blast following to the peening process on the fatigue strength improvement, residual stress measurement and fatigue tests have been conducted. Examined peening processes were UIT, PPP and HP with ICR apparatus. For the residual stress measurement, plate and on-bead specimens made of JIS-SM400, SBHS400, SBHS500 and SBHS700 were used, and X-ray diffraction method was applied to the measurement. The results concluded that the differences in the compressive residual stress distribution in the vicinity of peened area with and without blast are not so significant. For the fatigue tests, out-of-plane gusset welded joint specimens made of JIS-SM490 and SBHS500 were used. Fatigue tests were conducted under stress ratio R=0.0 and 0.5. Fatigue tests showed that fatigue strength of peened specimens with blast are almost the same as that of peened specimens without blast, and those results were observed independently of steel grade and of peening methods.
AB - In this study, to evaluate the influence of grid blast following to the peening process on the fatigue strength improvement, residual stress measurement and fatigue tests have been conducted. Examined peening processes were UIT, PPP and HP with ICR apparatus. For the residual stress measurement, plate and on-bead specimens made of JIS-SM400, SBHS400, SBHS500 and SBHS700 were used, and X-ray diffraction method was applied to the measurement. The results concluded that the differences in the compressive residual stress distribution in the vicinity of peened area with and without blast are not so significant. For the fatigue tests, out-of-plane gusset welded joint specimens made of JIS-SM490 and SBHS500 were used. Fatigue tests were conducted under stress ratio R=0.0 and 0.5. Fatigue tests showed that fatigue strength of peened specimens with blast are almost the same as that of peened specimens without blast, and those results were observed independently of steel grade and of peening methods.
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U2 - 10.1201/9780429279119-430
DO - 10.1201/9780429279119-430
M3 - Conference contribution
AN - SCOPUS:85112654611
SN - 9780367232788
T3 - Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
SP - 3165
EP - 3173
BT - Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
A2 - Yokota, Hiroshi
A2 - Frangopol, Dan M.
PB - CRC Press/Balkema
T2 - 10th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2020
Y2 - 11 April 2021 through 15 April 2021
ER -