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Title: Fast Fourier virtual fields method for determination of modulus distributions from full-field optical strain data
Authors: Nguyen, Truong Tho
Huntley, Jonathan M.
Ashcroft, Ian A.
Ruiz, Pablo D.
Pierron, Fabrice
Issue Date: 2013
Publisher: © Springer-Verlag Berlin Heidelberg
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.
Abstract: 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.
Description: The final publication is available at www.springerlink.com.
Version: Accepted for publication
DOI: 10.1007/978-3-642-36359-7_21
URI: https://dspace.lboro.ac.uk/2134/14043
Publisher Link: http://dx.doi.org/10.1007/978-3-642-36359-7_21
ISBN: 9783642363580
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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