Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Comparison of Shot Peening Residual Stress Distributions in a Selection of Material
Author: A. Ezeilo, G. Webster, P.S. Webster, P.S. Webster
Source: Conf Proc: ICSP-5, (p.274-281)
Publication year 1993
Document number: 1993079
Number of pages: 7
Abstract:
The residual stress distributions in a variety of engineering materials which have been shot peened to different intensities have been measured using non-destructive neutron
diffration methods. The results reveal that the same characteristic shape of stress distribution is obtained in all the materials with the surface in compression and the
existence of a tensile peak subsurface. Surface compression approaching yield was observed in some cases which was balanced by subsurface tension of about a third of the
value. The results are discussed in terms of the mechanical properties of the materials. The implications of the tension for initiating fatigue failures from the interior
of shot peened components is also discussed.
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