Tensile test of membrane materials using digital image correlation method

Wei Sun; E-liang Dong; Ming Xu; Bin Luo; Xiaoyuan He

doi:10.1117/12.780142

13 November 2007 Tensile test of membrane materials using digital image correlation method

Wei Sun, E-liang Dong, Ming Xu, Bin Luo, Xiaoyuan He

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64234G (2007) https://doi.org/10.1117/12.780142
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Digital image correlation method (DICM) is employed to measure the mechanical behavior of Precontraint 1202 Fluotop T2 membrane materials under biaxial loading conditions. In this study, shape functions in global coordinates are preferred, which is validated to determine large rigid body displacements as well as small strains more accurately. Creep tests are also carried out and the corresponding creep properties are analyzed. During the tests, images of the membrane surface are captured in real-time by a CCD camera. DICM is subsequently used to calculate strains by correlating the images recorded before and after deformations. Based on the results from DICM, modulus of elasticity, Poisson's ratio and creep curves are determined. Experimental results demonstrate the accuracy of the proposed method in evaluating the tension behavior of membrane materials, and prove the proposed method as a direct inspection tool and a practical alternative to the standard electrical measurements.

Citation Download Citation

Wei Sun, E-liang Dong, Ming Xu, Bin Luo, and Xiaoyuan He "Tensile test of membrane materials using digital image correlation method", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64234G (13 November 2007); https://doi.org/10.1117/12.780142

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