Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Control of Peened Layer Development
Author: Dr David Kirk, Visiting Prof in Materials, Faculty
Source: TSP, Vol 22, / Issue 3, Summer 2008
Publication year 2008
Document number: 2008021
Number of pages: 5
Abstract:
Academic Study Dr. David Kirk
INTRODUCTION
The prime objective with shot peening is to induce a well-developed protective surface layer of plastically-deformed material. This layer has two important properties:
compressive residual stress and work-hardening. Both of these properties act to improve service performance of components. Development of the layer proceeds with increase in
amount of peening until it has stabilized in the required thickness range. Fig.1 represents, schematically, the development of a peened surface layer. Control is needed in
order to ensure that the layer is fully-developed, has the required thickness and is not over-peened.
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