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Evaluation of the digital image correlation method for the measurement of vibration mode shapes

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conference contribution
posted on 29.09.2015, 09:44 by Mohd F. bin Mat Tahir, Stephen Walsh, Daniel O'BoyDaniel O'Boy
Digital Image Correlation (DIC) is a modern non-contact, full-field optical technique that is being used for the measurement of static and dynamic displacement problems, material testing and fracture mechanics. In particular, three dimensional DIC is able to measure the out-of-plane vibration mode shapes and deformation of a vibrating structure. Thus, this technique can potentially provide an important validation tool between measured and predicted results. This paper presents some preliminary evaluation results from using the DIC measurement approach. The DIC method was implemented using two low-speed charge-couple device cameras and a phase-locked measurement technique synchronised to the excitation. A 1.2mm thick steel plate with clamped boundary conditions was chosen as the test sample. Resonant frequencies and mode shapes were compared to predictions made using a Finite Element analysis and the experimental Chladni method of visualizing vibrating mode patterns. This comparison reveals some of the advantages and limitations of the DIC method for vibration mode shape analysis

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

InterNoise 2015

Citation

MAT TAHIR, M.F., WALSH, S.J. and O'BOY, D.J., 2015. Evaluation of the digital image correlation method for the measurement of vibration mode shapes. Inter-Noise and Noise-Con Congress and Conference Proceedings, 9-12th Aug., 2015, pp. 1986-1995.

Publisher

Ingenta Publishing on behalf of International Institute of Noise Control Engineering (© INCE-USA)

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper is a conference paper.

ISSN

0736-2935

Language

en

Location

San Francisco, California, USA

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