ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Shot peening generate compressive residual stress, which reduces repeatedly assessedtension stress and increase fatigue life. In this paper, the fatigue characteristics are evaluatedaccording to shot peening condition for the real differential gear. The specimen is a straight bevelgear which transmits rotation of engine to running wheel and it is caburized. The bending fatiguetest was done by the jig of our own making. The peening time was changed to find the bestcondition for the long fatigue life time. Fractography of specimen was analyzed by SEM to detectthe location of initial crack. The experimental results show that the optimum peening condition is at65m/s of shot ball speed and 8min of shot peening time. From the SEM image, the location of initialdefect and direction of crack propagation were found
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.963.pdf
Permalink