Error estimation in measuring strain fields with DIC on planar sheet metal specimens with a non-perpendicular camera alignment
作者： P. Lava , S. Coppieters , Y. Wang , P. Van Houtte , D. Debruyne
DOI: 10.1016/J.OPTLASENG.2010.08.017
关键词:
摘要: Abstract The determination of strain fields based on displacement components obtained via 2D-DIC is subject to several errors that originate from various sources. In this contribution, we study the impact a non-perpendicular camera alignment planar sheet metal specimen's surface. are estimated in numerical experiment. To purpose, deformed images – were by imposing finite element (FE) an undeformed image numerically rotated for Euler angles. It shown 3D-DIC stereo configuration induces substantial compensation introduced image-plane gradients. However, higher accuracy and precision up level perfect perpendicular proposed “rectified” setup. This compensating technique gains benefit both (single view, basic amount correlation runs, no cross-camera matching nor triangulation) (oblique angle compensation). Our conclusions validated real experiment SS304.
core.ac.uk
harvard.edu
elsevier.com
sci-hub.se 参考文章(28)
Hubert Schreier, Michael A. Sutton, Jean-Jos Orteu, Image Correlation for Shape, Motion and Deformation Measurements: Basic Concepts,Theory and Applications ,(2009)
François Hild, Bumedijen Raka, Maud Baudequin, Stéphane Roux, Florence Cantelaube, Multiscale displacement field measurements of compressed mineral-wool samples by digital image correlation Applied Optics. ,vol. 41, pp. 6815- 6828 ,(2002) , 10.1364/AO.41.006815
David Lecompte, Arwen Smits, Hugo Sol, John Vantomme, Danny Van Hemelrijck, Mixed numerical–experimental technique for orthotropic parameter identification using biaxial tensile tests on cruciform specimens International Journal of Solids and Structures. ,vol. 44, pp. 1643- 1656 ,(2007) , 10.1016/J.IJSOLSTR.2006.06.050
S. Cooreman, D. Lecompte, H. Sol, J. Vantomme, D. Debruyne, Identification of Mechanical Material Behavior Through Inverse Modeling and DIC Experimental Mechanics. ,vol. 48, pp. 421- 433 ,(2008) , 10.1007/S11340-007-9094-0
M. Rossi, G. B. Broggiato, S. Papalini, Application of digital image correlation to the study of planar anisotropy of sheet metals at large strains Meccanica. ,vol. 43, pp. 185- 199 ,(2008) , 10.1007/S11012-008-9123-9
Hubert W Schreier, Joachim R Braasch, Michael A Sutton, Systematic errors in digital image correlation caused by intensity interpolation Optical Engineering. ,vol. 39, pp. 2915- 2921 ,(2000) , 10.1117/1.1314593
Dmitry Ivanov, Sergey Ivanov, Stepan Lomov, Ignaas Verpoest, Strain mapping analysis of textile composites Optics and Lasers in Engineering. ,vol. 47, pp. 360- 370 ,(2009) , 10.1016/J.OPTLASENG.2008.05.013
P. Lava, S. Cooreman, D. Debruyne, Study of systematic errors in strain fields obtained via DIC using heterogeneous deformation generated by plastic FEA Optics and Lasers in Engineering. ,vol. 48, pp. 457- 468 ,(2010) , 10.1016/J.OPTLASENG.2009.08.013
Jean-José Orteu, 3-D computer vision in experimental mechanics Optics and Lasers in Engineering. ,vol. 47, pp. 282- 291 ,(2009) , 10.1016/J.OPTLASENG.2007.11.009
A. Willems, S.V. Lomov, I. Verpoest, D. Vandepitte, Drape-ability characterization of textile composite reinforcements using digital image correlation Optics and Lasers in Engineering. ,vol. 47, pp. 343- 351 ,(2009) , 10.1016/J.OPTLASENG.2008.03.012