Mean stress effects on fatigue of NiTi

Authors
Tabanli, RM Simha, NK Berg, BT
Citation
Rm. Tabanli et al., Mean stress effects on fatigue of NiTi, MAT SCI E A, 275, 1999, pp. 644-648
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
09215093 → ACNP
Volume
275
Year of publication
1999
Pages
644 - 648
Database
ISI
SICI code
0921-5093(199912)275:<644:MSEOFO>2.0.ZU;2-U
Abstract
Fatigue properties of shape-memory alloys (SMA) play an important role in a ctuator and certain biomedical applications. Since a small cyclic stress ca n trigger martensitic transformation when the mean stress is close to a cri tical stress, it is crucial to understand the effect of mean stress. This p aper examines mean stress effects on fatigue properties of a NiTi SMA throu gh systematic experiments. Preliminary results indicate that the cycles-to- failure has a non-monotone dependence on the mean strain at fixed strain am plitude. (C) 1999 Elsevier Science S.A. All rights reserved.