From discretization to continuous; advanced mechanical measurements using continuous scanning methods

Dario Di Maio*

*Corresponding author for this work

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

Abstract

Mechanical measurements are commonly performed by discretizing a continuum in a set of acquisition positions at which a transducer can measure a response to a stimulus. Mechanical behaviours of a test piece can be represented and understood by information obtained from these discrete positions. The discretization of a continuum is required because of the measurement methods, which are often developed using transducers at fixed locations both with contact and contact-less types. Measurement systems, such as Scanning Laser Doppler Vibrometer (SLDV) one, are becoming more used in dynamic testing thanks to the ability of measuring vibrations remotely by moving the laser spot anywhere on a test structure. Contactless transducers of this type can measure responses either at fixed positions or by sweeping continuously a test area. The latter measurement technique is called Continuous Scanning. This work is focussed on the advanced modal testing using Continuous Scanning LDV methods, where the modal properties of a test structure can be measured very efficiently and rapidly by using these methods. The continuous scanning is a measurement method which can move away from the discretization of a measurement space thanks to the capability of measuring meaningful parameters.

Original languageEnglish
Title of host publicationTopics in Modal Analysis I - Proceedings of the 30th IMAC, A Conference on Structural Dynamics, 2012
Pages153-166
Number of pages14
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event30th Conference on Structural Dynamics, IMAC 2012 - Jacksonville, United States
Duration: 30 Jan 20122 Feb 2012
Conference number: 30

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume5
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference30th Conference on Structural Dynamics, IMAC 2012
Abbreviated titleIMAC 2012
CountryUnited States
CityJacksonville
Period30/01/122/02/12

Keywords

  • Advanced modal testing
  • Continuous scanning LDV
  • ODS

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