An application of digital speckle correlation method: 3D reconstruction of fracture surface

Huaiwen Wang; Hongwei Ji; Yong Wang; Hui Miao; Wenquan Shao

doi:10.1117/12.839328

25 August 2009 An application of digital speckle correlation method: 3D reconstruction of fracture surface

Huaiwen Wang, Hongwei Ji, Yong Wang, Hui Miao, Wenquan Shao

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737551 (2009) https://doi.org/10.1117/12.839328
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

Based on DSCM (digital speckle correlation method), a 3D reconstruction technique of a surface is achieved by combining SEM (scanning electron microscope) stereo image pairs with computer vision theory. The factors that affect results' precision in this process are discussed. A quantitative analysis of the obtained 3D surface is carried out by employing fractal theory. The fractal dimension of the reconstructed 3D surface is measured by an improved cubic covering method. As an illustration of the technique, a 3D reconstruction of a rock's facture surface was carried out. The contours and the fractal dimension of the reconstructed 3D surface were obtained. Results indicate that the proposed 3D reconstruction is an effective method to quantificationally analyze fracture surface, which provides an approach to study the microscopic fracture mechanism, fracture progress and fracture characters.

Citation Download Citation

Huaiwen Wang, Hongwei Ji, Yong Wang, Hui Miao, and Wenquan Shao "An application of digital speckle correlation method: 3D reconstruction of fracture surface", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737551 (25 August 2009); https://doi.org/10.1117/12.839328

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