Abstract
The aim of this work is the simultaneous use and comparison of two different techniques for measuring the three dimensional deformation of a sheet metal specimen subjected to a tensile load. Such measurements are useful for a correct analysis of the mechanical behavior and plastic damage of materials.
The former is a hybrid technique based on the combination of 2D DIC and fringe projection; the latter is the 3D DIC. The first method consists in the use of two camera-LCD projector pairs, one for each side of the specimen, in order to acquire the contour map of the out-of-plane displacement with maximum spatial resolution; simultaneously but with lower resolution, the in-plane displacements are evaluated from 2D DIC. The set-up was then integrated with another camera per side, in order to implement the “classic” 3D DIC. The results of these two techniques have been compared, showing a good agreement in general but, although in literature the 3D DIC has been used for trying to study the plastic damage evolution associated to volume change, its reduced spatial resolution leads to a different evaluation, with possible underestimation, of real thickness reduction especially in the very necked zone.
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References
Sutton MA, Bruck HA, McNeill SR (1989) Determination of deformations using digital correlation with the Newton Raphson Method for partial differential corrections. Exp Mech 29(3):261–267
Amodio D, Broggiato GB, Campana F, Newaz GM (2003) Digital speckle correlation for strain measurement by image analysis. Exp Mech 43:396–402
Broggiato GB (2004) Adaptive image correlation technique for full-field strain measurement. In: Proceedings of ICEM12 – 12th international conference on experimental mechanics, Bari
Luo PF, Chao YJ, Sutton MA, Peters WH (1993) Accurate measurement of three-dimensional deformations in deformable and rigid bodies using computer vision. Exp Mech 33(2):123–132
Yaofeng S, Pang J (2007) Study of optimal subset size in digital image correlation of speckle pattern images. Opt Lasers Eng 45(9):967–974
Sutton MA, Wolters WJ, Peters WH, Ranson WF, McNeill SR (1983) Determination of displacements using an improved digital correlation method. Image Vision Comput 1(3):133–139
Sutton MA, McNeill SR, Helm JD, Schreier HW (2000) Computer vision applied to shape and deformation measurement. In: Rastogi PK, Inaudi D (eds) Trends in optical nondestructive testing and inspection. Elsevier, Amsterdam
Pan B, Qian K, Xie H, Asundi A (2009) Two-dimensional digital image correlation for in-plane displacement and strain measurement: a review. Meas Sci Tech 20(6):1–17
Kahn-Jetter ZL, Chu TC (1990) Three-dimensional displacement measurements using digital image correlation and photogrammic analysis. Exp Mech 30(1):10–16
Synnergren P, Sjodahl M (1999) A stereoscopic digital speckle photography system for 3-D displacement field measurements. Opt Lasers Eng 31:425–443
Vogel JH, Lee D (1989) An automated two-view method for determining strain distributions on deformed surfaces. J Mater Shap Technol 6:205–216
Sutton MA, McNeill SR, Helm JD, Chao YJ (2000) Advances in two dimensional and three-dimensional computer vision. In: Rastogi PK (ed) Photomechanics, topics applied physics, vol 77. Springer, Berlin, pp 323–372
Sutton MA, Orteu JJ, Schreier HW (2009) Image correlation for shape, motion and deformation measurements. Springer, New York
Sutton MA, Yan JH, Tiwari V, Schreier HW, Orteu JJ (2008) The effect of out-of-plane motion on 2D and 3D digital image correlation measurements. Opt Lasers Eng 46:746–757
Garcia D, Orteu JJ, Penazzi L (2002) A combined temporal tracking and stereo-correlation technique for accurate measurement of 3D displacements: application to sheet metal forming. J Mater Process Technol 125–126:736–742
Wu T, Coret M, Combescure A (2011) Strain localisation and damage measurement by full 3D digital image correlation: application to 15-5PH stainless steel. Strain 47(1):49–61
Gao Z, Wang Y, Gioia G, Cuitiño AM (2002) A global approach for digital speckle correlation. In: Proceedings of the 2002 SEM annual conference and exposition on experimental and applied mechanics, Milwakee (WI) - USA
Broggiato GB, Casarotto L, Del Prete Z, Maccarone D (2007) Full-field strain rate measurement by white-light speckle image correlation. In: Proceedings of the 13th international conference on experimental mechanics, Alexandroupolis
Chadwick P (1999) Continuum mechanics, concise theory and problems. Dover Publications, New York
Reich C, Ritter R, Thesing J (2000) 3-D shape measurement of complex objects by combining photogrammetry and fringe projection. Opt Eng 39:224–231
Hung YY, Lin L, Shang HM, Park BG (2000) Practical three-dimensional computer vision techniques for full-field surface measurement. Opt Eng 39:143–149
Sasso M, Rossi M, Chiappini G, Palmieri G (2009) Sheet metals testing with combined fringe projection and digital image correlation. In: Proceedings of the 2009 SEM annual conference and exposition on experimental and applied mechanics, Albuquerque (NM) - USA
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Chiappini, G., Sasso, M., Rossi, M. (2013). Comparison of Contouring Techniques Applied to Sheet Metal Testing. In: Jin, H., Sciammarella, C., Furlong, C., Yoshida, S. (eds) Imaging Methods for Novel Materials and Challenging Applications, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4235-6_24
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DOI: https://doi.org/10.1007/978-1-4614-4235-6_24
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