Using the Simplified 3D DIC Method to Measure the Deformation of 3D Surface

Abstract:

In recent years, 2D digital image correlation method (DIC) has been widely used in the measurement of plane strain. However, out-of-plane displacement could be induced during the loading and it would affect the measurement accuracy. Thus, a 3D measurement is necessary. This study utilizes a simplified 3D DIC to measure the geometry of an object before and after deformation. Then the finite element concept is involved to determine the strain after deformation. A flat plate specimen with in-plane and out-of-plane displacement is observed. Both 2D and 3D DIC are used to analyze the strain. The results show that using 3D DIC to measure strain is feasible and with a very good accuracy.

• Periodical: Applied Mechanics and Materials (Volumes 121-126)
• Pages: 3945-3949
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.121-126.3945
• Online since: October 2011
• Authors: Shih Heng Tung, Jui Chao Kuo, Ming Hsiang Shih, Wen Pei Sung
• Keywords: Out-of-Plane Displacement, Simplified 3D DIC, Strain

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DOI: 10.1016/s0167-6636(02)00271-5

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