Increasing Endurance Limit of Gears by 20 - 50%

Author:  John Eckersley
Source:  Conf Proc: IITT Detroit, MI October 26, 1993
Doc ID:  1993053
Year of Publication:  1993
Abstract:  
Today's major trend in the gearing industry is to extract increasinlgy higher outputs from smaller and smaller components. The reliability of computer monitored shot peening methds has made the process useful beyond the traditional rols of "fixing" fatigue failures. Shot peening is now included at the design level of hilicopter and fixed wing aircraft gear trains, as well as automotive transmissions, so that these can meet the impositions of strnoger/smaller criteria. Paper will present results of recent studies on the effects of hard vs regular shot, and the benefits of dual peening on both root bending and surface fatigue of carburized and carbonitrided gear teeth.