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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.12 [2005] >
IJEMS Vol.12(6) [December 2005] >
| Title: | Influence of shot peening intensity on fatigue design reliability of 65Si7 spring steel |
| Authors: | Aggarwal, M L
Khan, R A
Agrawal, V P |
| Issue Date: | Dec-2005 |
| Publisher: | CSIR |
| IPC Code: | C22F1/00, G01N3/00 |
| Abstract: | A lot of research has been done to improve the fatigue
strength of metallic materials by creating compressive residual stress field
(CRSF) in their surface regions through shot peening. In this paper, the axial
fatigue strength of 65Si7 spring steel is evaluated experimentally as a
function of shot peening intensity for the application in the automotive
vehicles. Fatigue life at various shot peening conditions is determined with
S/N curves and optimum shot peening intensity is also determined. The effect of
Almen intensity on compressive residual stress and relaxation of compressive
residual stress have been discussed for fatigue life extension. Shot peening of
leaf springs is illustrated to cause improvement in fatigue strength, reduction
in weight and reliability. A flow chart has been developed for improvement in
fatigue design of components for economy. |
| Page(s): | 515-520 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.12(6) [December 2005]
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