SHOT PEENING TREATMENT AS A BARRIER TO FATIGUE CRACK PROPAGATION IN PURE SHEAR FOR MEDIUM CARBON STEEL | ||
| AL-TAQANI | ||
| Article 1, Volume 23, Issue 4, August 2010, Pages 222-229 | ||
| Authors | ||
| Hussain J. Mohamed Al-alkawi; Mairb R. Abdul Hassan; Fatin N. Abdu Allah | ||
| Abstract | ||
| In this study, the effect of shot peening process on the fatigue crack growth of o.4C medium carbon steel has been evaluated by conducting Fatigue tests. Torsion were carried out at stress ratio of (R= -1) and at room temperature. The following conclusions are obtained 1) It is observed that the fatigue life increases with shot peening process. 2) An equation is proposed to describe the behavior of fatigue crack growth under shot peening process. The equation may be written as: da/dN=150( γp)3.22a µm/cycle 3) For a given crack growth rate and crack length the plastic shear strain range (∆γP) is reduced by shot peening process. | ||
| Keywords | ||
| torsion Fatigue test; plastic shear strain; Shot peening; medium carbon steel | ||
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