The Reality of Shot Peen Coverage

Author:  Dale Lombardo, Pete Bailey
Source:  Conf Proc: ICSP-6, (p.493-504)
Doc ID:  1996095
Year of Publication:  1996
Abstract:  
The statistical nature of surface coverage during shot peening is often misunderstood. In some instances, process and design engineers will specify "200% coverage" or more without a clear definition of what is meant by percent coverage or how to achieve it. This paper will attempt to clarify important aspects of the surface coverage process. A combination of analytical, experimantal and numerical results are presented to illustrate the difference between 1) area of strike ratio, 2) coverage ratio and 3) percent coverage. In addition, a computer program is presented that allows the user to experiment with peening process parameters an observe the effects of the same.