SHOT PEENING MECHANICS - EXPERIMENTAL AND THEORETICAL-ANALYSIS

Shot peening is a process of cold-working the surface of structural or machine parts by involving multiple and progressively repeated impact . Interaction between shot and target is discussed and the sequence of events during the loading and unloading cycles which lead to plastici ty and residual stress development are examined. Statistical and dynam ical aspects of single impact are considered and a number of theoretic al expressions for the parameters of the process are presented. The th eoretical expressions compare well with experiments.