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Author(s): G. Donzella, M. Guagliano & L. Vergani
Abstract:
ental investigations and numerical
analyses on deep rolling residual stresses
G.
Donzella," M.
Guagliano,* L.
Vergani*
" Universitd degli Studi di Brescia, Dipartimento di
Ingegneria Meccanica, Via Branze, 38, 25123
Brescia, Italy
^Dipartimento di Meccanica, Poltecnico di Milano,
f .zzo I.
do Fmcz', 32, 2(%<%? Mz/aTio, 7W%/
ABSTRACT
The deep rolling is a mechanical surface treatment widely used to improve
the fatigue strength of the notched components.
In order to optimize the
rolling parameters the surface residual stresses have been calculated by
means of a numerical model of a roll compressing a prismatic bar.
Experimental measurements of the residual stresses have been carried out
on the same numerically modelled bar, by using the hole drilling method
and a new method.
The results were compared.
INTRODUCTION
Mechanical and thermal treatments are today widely used to improve
the fatigue mechanical characteristics of the materials.
In particular, if we
co...
Pages: 15
Size: 1,160 kb
Paper DOI: 10.2495/SURF930021
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