INTERNAL-FRICTION PENDULUM FOR INTERMEDIATE FREQUENCIES AND VARIABLE MOMENT OF INERTIA AND ITS APPLICATION TO ZIRCALOY-4

Authors
POVOLO F LAMBRI OA SAAVEDRA FM
Citation
F. Povolo et al., INTERNAL-FRICTION PENDULUM FOR INTERMEDIATE FREQUENCIES AND VARIABLE MOMENT OF INERTIA AND ITS APPLICATION TO ZIRCALOY-4, Materials transactions, JIM, 35(4), 1994, pp. 254-257
Citations number
14
Categorie Soggetti
Metallurgy & Mining","Material Science
Journal title
Materials transactions, JIM → ACNP
ISSN journal
09161821
Volume
35
Issue
4
Year of publication
1994
Pages
254 - 257
Database
ISI
SICI code
0916-1821(1994)35:4<254:IPFIFA>2.0.ZU;2-2
Abstract
A new torsion pendulum for internal friction measurements at intermedi ate frequencies is presented. With this equipment it is possible to me asure not only the damping but also its derivative with respect to the frequency, at different temperatures. Some data on the grain boundary relaxation of polycrystalline Zircaloy-4 are presented to show the ap plicability of the pendulum. In fact, the activation parameters for th e grain boundary relaxation can be obtained even for very low damping.