Temporal aliasing in high-speed 3-dimensional digital image correlation vibration measurement

Timothy J. Beberniss, David A. Ehrhardt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

High-speed 3-dimmensional digital image correlation is rapidly becoming a feasible and practical method for vibration measurement. Despite the growing popularity in dynamic DIC, no known studies focusing on temporal aliasing of a DIC measured vibration response exist. Therefore a study on the potential for and methods to deal with aliasing in vibration measurement utilizing high-speed 3D digital image correlation is conducted. In this study both spatial and temporal aliasing in image processing is addressed. To date it was found that despite there being a wealth of spatial anti-aliasing solutions, they have limited to no impact on aliasing of the DIC displacement time signal used for vibration measurement. No known temporal anti-aliasing technique currently exists for digitized high-speed images for the purposes of motion tracking. Temporal aliasing is therefore likely a pitfall that needs to be systematically avoided during DIC vibration measurement.

Original languageEnglish (US)
Title of host publication56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624103421
DOIs
StatePublished - 2015
Externally publishedYes
Event56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015 - Kissimmee, United States
Duration: Jan 5 2015Jan 9 2015

Publication series

Name56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Other

Other56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2015
Country/TerritoryUnited States
CityKissimmee
Period1/5/151/9/15

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Mechanics of Materials
  • Building and Construction

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