Back to Basics: Peening Intensity

Author:  Dr. David Kirk
Source:  The Shot Peener magazine, Vol 35, Issue 2, Spring 2021
Doc ID:  2021017
Year of Publication:  2021
Abstract:  
INTRODUCTION Peening Intensity and Coverage are our two main shotpeening parameters. As such, they cover separate aspects of shot peening. Coverage will be the subject of the next article in this mini-series. Peening intensity, aka Almen intensity and saturation intensity, is currently unambiguously defined—thanks to the adoption and availability of dedicated computer programs and a precise definition. This definition states that “Peening intensity is the arc height of a point on an Almen curve such that doubling the peening time increases the arc height by 10%.” Fig.1 illustrates the definition applied using a computer program.