CHAOS AND THE JERKY FLOW IN AL-MG POLYCRYSTALS

Authors
ANANTHAKRISHNA G FRESSENGEAS C KUBIN LP
Citation
G. Ananthakrishna et al., CHAOS AND THE JERKY FLOW IN AL-MG POLYCRYSTALS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 234, 1997, pp. 314-317
Citations number
7
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
234
Year of publication
1997
Pages
314 - 317
Database
ISI
SICI code
0921-5093(1997)234:<314:CATJFI>2.0.ZU;2-X
Abstract
The stress versus time signals generated in Al-3%Mg polycrystalline sa mples deformed in constant strain rate have been analysed in order to check the prediction that jerky flow should exhibit chaotic behaviour. The analysis was carried out with the help of several complementary m ethods, showing the existence of a finite correlation dimension and a positive Lyapunov exponent. The results unambiguously show the existen ce of chaos resulting from the non-linear interaction of four or five degrees of freedom. (C) 1997 Elsevier Science S.A.