Correlation of Almen arc height with residual stresses in shot peening process
Authors: Cao, W.; Fathallah, R.; Castex, L.
Source: Materials Science and Technology, Volume 11, Number 9, September 1995 , pp. 967-973(7)
Publisher: Maney Publishing
Abstract:The deformations of shot peened Almen strips constrained on Almen blocks with increasing shot peening time, and their subsequent changes after the fixing screws are removed, are experimentally investigated and modelled. Deflection of the constrained Almen strips appears, principally in the transverse direction, as soon as the first passes of peening are applied. The curvatures and the residual stress change with increasing peening time. Removing the screws results in a significant deflection and a great relaxation of residual stress in the longitudinal direction only. A model is proposed to calculate the deformation and the residual stresses in the constrained and free strips. A new problem arises in the evaluation and interpretation of the Almen intensity scale.
Document Type: Research Article
Publication date: 1995-09-01
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