Advancement of Optical Methods in Experimental Mechanics, by Shanglei Li, Anish Poudel (auth.), Helena Jin, Cesar

By Shanglei Li, Anish Poudel (auth.), Helena Jin, Cesar Sciammarella, Sanichiro Yoshida, Luciano Lamberti (eds.)

Advancement of Optical tools in Experimental Mechanics: Proceedings of the 2013 Annual convention on Experimental and utilized Mechanics, the 3rd quantity of 8 from the convention, brings jointly contributions to this significant sector of study and engineering. the gathering provides early findings and case reports on quite a lot of optical tools starting from conventional photoelasticity and interferometry to more moderen DIC and DVC innovations, and contains papers within the following basic technical learn components:

Optical metrology and displacement measurements at various scales

Digital holography and experimental mechanics

Optical size structures utilizing polarized mild

Surface topology

Digital photo correlation

Optical tools for MEMS and NEMS

Three-dimensional imaging and volumetric correlation

Imaging tools for thermomechanics applications

3D volumetric movement size

Applied photoelasticity

Optical residual tension size techniques

Advances in imaging technologies

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Additional resources for Advancement of Optical Methods in Experimental Mechanics, Volume 3: Conference Proceedings of the Society for Experimental Mechanics Series

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Processing grid images consists first in extracting the phases along directions x and y both in the reference and in the current images. 2) ~ defined above for the strain components. It has been recently demonstrated in [6] that each of the quantities X ~i @ Φ ~ ¼Φ ~ i; ;~ ui ; ~εij ; i,j ¼ x; y) is nearly equal to the convolution of its actual counterpart X by the envelope of the kernel (X @xj denoted g used in the windowed Fourier transform. Thus ~ %XÃg X where the symbol * denotes convolution.

The virtual strain components to be used in VFM are then chosen to be the eigenfunctions so determined. In addition to being a physically meaningful set of virtual fields, such a choice exploits the orthogonality of the computed eigenfunctions while simultaneously eliminating computation of a large number of coefficients that define the virtual fields in prior approaches. In the case of linear elastic behaviour, we show that this new approach, named the Eigenfunction Virtual Fields Method (EVFM), leads to a compact system of equations that can be solved for the unknown material parameters.

Springer, New York 2. Malvern LE (1977) Introduction to the mechanics of a continuous medium. Prentice-Hall, Englewood Cliffs 3. Avril S, Pierron F (2007) General framework for the identification of constitutive parameters from full-field measurements in linear elasticity. Int J Solids Struct 44:4978–5002 4. Sutton MA, Orteu J-J, Schreier HW (2009) Image correlation for shape, motion and deformation measurements. Springer, New York 5. Grediac M, Pierron F, Surrel Y (1999) Novel procedure for complete in-plane composite characterization using a single T-shaped specimen.

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