Computer monitored shot peening, an update

摘要

Shot peening has been used by industry for more than 50 years. The significant increases in resistance to fatigue, fretting, galling, and stress corrosion are well known, yet engineers have been reluctant to use shot peening in design allowables due to a lack of confidence in the reproductibility of the process. AMS 2432 SHOT PEENING, COMPUTER MONITORED was written by the Society of Automotive Engineers, Inc. so that the performance enhancement of peening could be taken into account in the initial design. It tightens the requirements on the media and the equipment to the maximum extent practicable. Of most importance, the peening of subsequent parts even years later will be a duplicate of the original part that was fatigue tested. Peenstress~(TM) is a new software program capable of predicting the residual stresses that are introduced by shot peening in most metals. This new program allows engineers to optimize the basic peening parameters so that the first peening selection is correct.