Publication
Title
Linear and nonlinear damage detection using a scanning laser vibrometer
Author
Abstract
Because a Scanning Laser Vibrometer (SLV) can perform vibration measurements with a high spatial resolution, it is an ideal instrument to accurately locate damage in a structure. Unfortunately, the use of linear damage detection features, as for instance FRFs or modal parameters, does not always lead to a successful identification of the damage location. Measurement noise and nonlinear distortions can make the damage detection procedure difficult. In this article, a combined linear-nonlinear strategy to detect and locate damage in a structure with the aid of a SLV, will be proposed. To minimize the effect of noise, the modal parameters will be estimated using a Maximum Likelihood Estimator (MLE). Both noise and nonlinear distortion levels are extracted using the residuals of a two-dimensional spline fit. The validation of the technique will be performed on SLV measurements of a delaminated composite plate.
Language
English
Source (journal)
Shock and vibration. - New York
Source (book)
4th International Conference on Vibration Measurements by Laser, Techniques, June 21-23, 2000, Ancona, Italy
Publication
New York : Wiley-Interscience, 2002
ISSN
1070-9622
Volume/pages
9:1-2(2002), p. 43-56
ISI
000174626500006
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 04.11.2014
Last edited 17.07.2017