Back to Basics: Dent Formation and Coverage

Author:  Dr. David Kirk
Source:  The Shot Peener magazine, Vol 34, Issue 4, Fall 2020
Doc ID:  2020038
Year of Publication:  2020
Abstract:  
INTRODUCTION The aim of this mini-series is to cover the basic scientific principles of shot peening. Fundamental principles are presented together with relevant theoretical explanations. You do not need to understand the mathematics—they are only needed to justify the ways in which quantification and prediction can be achieved. A necessary feature of shot peening is that dents are produced on the surface of the component. It is these dents that induce the beneficial effects of surface work-hardening and compressive residual stress to form the “magic skin.” This article deals only with dent formation and coverage, leaving these beneficial effects of dents for later articles.