Publication
Title
Identification of Young's modulus from broadband modal analysis experiments
Author
Abstract
The stress-strain relationship of linear viscoelastic materials is characterised by a complex-valued, frequency-dependent elastic modulus E(jomega) (Young's modulus). Using system identification techniques it is shown in this paper how E(jomega) can be measured accurately in a broad frequency band from forced flexural (transverse) and longitudinal vibration experiments on a beam under free-free boundary conditions. The advantages of the proposed method are (i) it takes into account the disturbing noise and the non-linear distortions, (ii) E(jomega) is delivered with an uncertainty bound, (iii) the low sensitivity to non-idealities of the experimental set-up, and (iv) the ability to measure lowly damped materials. The approach is illustrated on brass, copper, plexiglass and PVC beams. (C) 2003 Elsevier Science Ltd. All rights reserved.
Language
English
Source (journal)
Mechanical systems and signal processing. - London
Publication
London : 2004
ISSN
0888-3270
Volume/pages
18:4(2004), p. 699-726
ISI
000221440200001
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 04.11.2014
Last edited 04.06.2017