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Fast Fourier virtual fields method for determination of modulus distributions from full-field optical strain data

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conference contribution
posted on 28.01.2014 by Tho Nguyen, Jonathan Huntley, Ian A. Ashcroft, Pablo Ruiz, Fabrice Pierron
Inspection of parts for manufacturing defects or in-service damage is often carried out by full-field optical techniques (e.g., digital speckle pattern interferometry, digital holography) where the high sensitivity allows small anomalies in a load-induced deformation field to be measured. Standard phase shifting and phase unwrapping algorithms provide full-field displacement and hence strain data over the surface of the sample. The problem remains however of how to quantify the spatial variations in modulus due, for example, to porosity or damage-induced micro-cracking. Finite element model updating (FEMU) is one method to solve problems of this type, by adjusting an approximate finite element model until the responses it produces are as close to those acquired from experiments as possible.

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School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

NGUYEN, T.T. ... et al, 2013. Fast Fourier virtual fields method for determination of modulus distributions from full-field optical strain data. Osten, W. (ed). Fringe 2013: 7th International Workshop on Advanced Optical Imaging and Metrology, Nürtingen, Germany. Springer-Verlag Berlin Heidelberg, pp. 161-166.

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© Springer-Verlag Berlin Heidelberg

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

2013

Notes

The final publication is available at www.springerlink.com.

ISBN

9783642363580

Language

en

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