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Title: Effect of Ultrasonic Shot Peening on Fatigue Strength of High Strength Steel
Author: Watanabe Hattori Handa Hasegawa Takaji Ikeda Ducha
Source: Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Publication year 2002
Document number: 2002039
Number of pages: 6
Abstract:
Authors
Yoshihiro Watanbe, Kaneshi Hattori, Mitsuru Handa, Toyo Seiko, Japan
Norihiko Hasegawa, Keiro Tokaji, Masahide Ikeda, Gifu University, Japan
Jean Michel Duchazeaubeneix, Sonats, France
Abstract
A study had been made to evaluate the effect of the Ultrasonic shot peening treatment, developed by SONATS, on fatigue strength. This new shot treatment could give the
smooth surface after shot peening because of using the polished ball bearings. To investigate the effect and the merit of new treatment, fatigue test were conducted on
cantilever type rotating bending fatigue testing machine. It was confirmed that fatigue strength peened by ultrasonic shot treatment is almost the same as that peened by
conventional air peening device. Further, mechanism of the fracture was confirmed between roughed specimens by conventional peening and the smooth one by ultrasonic peening.
Key words: Ultrasonic Shot Peening, twofold S-N curve, fish-eye, inclusion, ultra-high-cycle fatigue
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