Measurement and comparison of Operational Deflection Shapes (ODSs) using a Scanning LDV system in step or continuous scanning mode

D. Di Maio*, D. J. Ewins

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Measurement of Operational Deflection Shapes (ODSs) can be extremely useful for some applications which require an instant visualization of the deflection shape of a vibrating structure. There are several transducers available for measuring instantaneously such a quantity and the Scanning LDV (SLDV) is one of those. SLDV offers two different methods for fast measurements of ODS, which can be identified by the operating mode of the scanning mirrors. One method is called 'Fast Scan', FS-SDLV, where the laser beam is moved discretely over a grid of measurement points, while the other one is called Continuous SLDV, C-SLDV, and the laser beam is moved continuously over the surface following a prescribed pattern. This paper presents a comparison of the measurement of ODS using both techniques.

Original languageEnglish
Title of host publicationIMAC-XXVII
Subtitle of host publicationConference and Exposition on Structural Dynamics - Model Verification and Validation
Publication statusPublished - 2009
Externally publishedYes
Event27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII - Orlando, United States
Duration: 9 Feb 200912 Feb 2009
Conference number: 27

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference27th Conference and Exposition on Structural Dynamics 2009, IMAC XXVII
Abbreviated titleIMAC 2009
CountryUnited States
CityOrlando
Period9/02/0912/02/09

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