The Development of New Type Almen Strip for Measurement of Peening Intensity on Hard Shot Peening

Author:  Watanabe, Hasegawa, Namiki, Hatano
Source:  The Shot Peener magazine, Vol 06/Issue 4, Winter 1992/93
Doc ID:  1992083
Year of Publication:  1992
Abstract:  
Abstract In the hard shot peening, it has been pointed out that Almen A type strip is not proper as an index of peening effect, because the arc height measured by Almen A strip is not in good correspondence to surface residual stress. Based on this background, the relation between residual stress and the arc height measured by conventional C strip and the high hard trial strip with hardness of HRC 60 was investigated. It was concluded that the arc height measured by high hard trail strip was in good agreement with the maximum compressive stress and the magnitude of stressed layer.