Special Applications of Shot Peening

Author:  M.C. Sharma
Source:  The Shot Peener magazine, Vol 14 / Issue 4, Winter 2000
Doc ID:  2000038
Year of Publication:  2000
Abstract:  
Reprinted with permission from "Shot Peening and Blast Cleaning" - 1996 Conference Proceedings Shot peen forming has become an excellent procedure for forming sophisticated components in aircraft construction industries. The theory, recent developments, application and economy of the process have been described in brief. Experiments were conducted on thin spring steel strips to study the effect of elastic bending prestresses in peen forming to a given curvature. Results indicate that elastic prestress peen-forming was found to be advantageous and it reduces compound contour normally resulting from free state peening. The residual stress magnitude in pre-stress forming was also found to be higher than free state forming under similar conditions. It could be possible to peen form even hard strips and sheets without rebound and compound contour.