Improved Gear Life Thorugh Controlled Shot Peening

Author:  Burrell, N.K.
Source:  American Gear Mfrs. Assoc., Tech. Paper No. 85FTM15
Doc ID:  1985010
Year of Publication:  1985
Abstract:  
Evaluating dynamic loads in gear design has always been a major design consideration. In addition to stresses due to applied loads, however, the impact of residual stresses must also be considered. Shot peening as described in this paper produces beneficial residual compressive stresses under strictly controlled conditions. Compressive stress prevents or limits failure in gearing due to fatigue failures at the fillet, pitting failure at the pitch line, as well as providing other benefits for gear designers and users.