Online from: 2010
Subject Area: Mechanical & Materials Engineering
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|Title:||Improvement of fatigue limit by shot peening for high-strength steel containing a crack-like surface defect|
|Author(s):||Koji Takahashi, (Faculty of Engineering, Yokohama National University, Yokohama, Japan), Toshihiko Amano, (Faculty of Engineering, Yokohama National University, Yokohama, Japan), Kotoji Ando, (Faculty of Engineering, Yokohama National University, Yokohama, Japan), Fumio Takahashi, (NHK Spring Co. Ltd, Yokohama, Japan)|
|Citation:||Koji Takahashi, Toshihiko Amano, Kotoji Ando, Fumio Takahashi, (2011) "Improvement of fatigue limit by shot peening for high-strength steel containing a crack-like surface defect", International Journal of Structural Integrity, Vol. 2 Iss: 3, pp.281 - 292|
|Keywords:||Crack-like surface defect, Deformation, Fatigue, Fatigue strength, Fracture mechanics, High-strength steel, Residual stress, Shot peening, Steel|
|Article type:||Research paper|
|DOI:||10.1108/17579861111162888 (Permanent URL)|
|Publisher:||Emerald Group Publishing Limited|
Purpose – The paper's aim is to investigate the effects of shot peening (SP) on the bending fatigue limit of high-strength steel containing an artificial semi-circular slit.
Design/methodology/approach – SP and stress SP (SSP) were conducted on the specimens containing an artificial semi-circular slit with a depth of
Findings – The fatigue limit was improved by SP and SSP. In the case of SP and SSP specimens, the specimens with a semi-circular slit under
Practical implications – The proposed method can be applied to mechanical parts used in vehicles, aircraft and trains.
Originality/value – There are very few examples of evaluations of fatigue limits after SP in materials containing crack-like surface defects. This study calcifies the effect of SP on the fatigue limit having crack-like surface defects.
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