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Fast Fourier virtual fields method for determination of modulus distributions from full-field optical strain data
conference contribution
posted on 2014-01-28, 15:13 authored by Tho Nguyen, Jonathan Huntley, Ian A. Ashcroft, Pablo RuizPablo Ruiz, Fabrice PierronInspection 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.
History
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.Publisher
© Springer-Verlag Berlin HeidelbergVersion
- 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
2013Notes
The final publication is available at www.springerlink.com.ISBN
9783642363580Publisher version
Language
- en