H
Hitoshi Soyama
Researcher at Tohoku University
Publications - 245
Citations - 3852
Hitoshi Soyama is an academic researcher from Tohoku University. The author has contributed to research in topics: Peening & Residual stress. The author has an hindex of 33, co-authored 230 publications receiving 3144 citations. Previous affiliations of Hitoshi Soyama include Tokyo University of Marine Science and Technology & Osaka University.
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Cavitation shotless peening for improvement of fatigue strength of carbonized steel
Dan Odhiambo,Hitoshi Soyama +1 more
TL;DR: In this article, Cavitation shotless peening (CSP) is used to improve the fatigue strength of carbonized chrome-molybdenum alloy steel (JIS SCM415) with respect to processing times, residual stress and cyclic-stress curves.
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Comparison of mechanisms of advanced mechanical surface treatments in nickel-based superalloy
Amrinder S. Gill,Abhishek Telang,Seetha R. Mannava,Dong Qian,Young-Shik Pyoun,Hitoshi Soyama,Vijay K. Vasudevan +6 more
TL;DR: In this article, the effects of three advanced mechanical surface enhancements treatments: laser shock peening, cavitation shotless peening and ultrasonic nano structure modification on residual stress, hardness, plastic deformation and changes in near surface microstructure introduced in a Ni-Base superalloy, IN718 SPF (Super plastic forming).
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Comparison between the improvements made to the fatigue strength of stainless steel by cavitation peening, water jet peening, shot peening and laser peening
TL;DR: In this article, a plate bending fatigue test was conducted to compare the performance of various peening methods used to improve the fatigue strength of stainless steel 316L, and the optimum coverage was examined by measuring the fatigue life at constant bending stress.
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Improvement of Fatigue Strength of Aluminum Alloy by Cavitation Shotless Peening
TL;DR: Cavitation shotless peening as discussed by the authors uses a submerged high speed water jet with cavitation to modify surfaces in the same way as shot peening, where no solid body collisions occur in this peening process.
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High-Speed Observation of Ultrahigh-Speed Submerged Water Jets
Hitoshi Soyama,Yoshiaki Yanauchi,Kazunori Sato,Toshiaki Ikohagi,Risaburo Oba,Ryoichiro Oshima +5 more
TL;DR: In this paper, the spatial distribution of highly erosive impulsive pressures around the submerged water jets were measured by means of a pressure sensitive film technique, and the effects of the injection pressure and the nozzle configuration were systematically clarified.