PARAMETRIC STUDY OF RESIDUAL-STRESS DUE TO SHOT PEENING

Citation
Zm. Xiao et al., PARAMETRIC STUDY OF RESIDUAL-STRESS DUE TO SHOT PEENING, Journal of materials processing technology, 39(3-4), 1993, pp. 469-483
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Engineering, Mechanical","Material Science
ISSN journal
0924-0136
Volume
39
Issue
3-4
Year of publication
1993
Pages
469 - 483
Database
ISI
SICI code
0924-0136(1993)39:3-4<469:PSORDT>2.0.ZU;2-2
Abstract
Shot peening was carried out on an 6061-T652 aluminium alloy, the effe cts of two main peening parameters, the air blast pressure and the exp osure time, on the depth of yield and the maximum residual stress indu ced in the shot peened specimens, being measured. For the residual str ess, the traditional strain-gauge hole-drilling method and a laser hol ographic interferometry technique were used. Analysis of the experimen tal data showed that the residual stress is affected by the air-blast pressure to a power law, and that there is an exponential relationship between the maximum induced stress and the exposure time, an empirica l equation for the relationship of the maximum stress with the pressur e and time being thus obtained. A similar expression was arrived at al so for the variation of the depth of the yield zone with pressure and time.