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 Contribution (Conference Proceeding)

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 publicationConference Proceedings of the Society for Experimental Mechanics Series
Pages153-166
Number of pages14
Volume5
DOIs
Publication statusPublished - 2012
Event30th IMAC, A Conference on Structural Dynamics, 2012 - Jacksonville, FL, United States
Duration: 30 Jan 20122 Feb 2012

Conference

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

Keywords

  • Advanced modal testing
  • Continuous scanning LDV
  • ODS

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  • Cite this

    Di Maio, D. (2012). From discretization to continuous; advanced mechanical measurements using continuous scanning methods. In Conference Proceedings of the Society for Experimental Mechanics Series (Vol. 5, pp. 153-166) https://doi.org/10.1007/978-1-4614-2425-3_15