Inner crack reconstruction and mechanical analysis for rock-specimen-based phase measuring profilometry

Yiping Cao; Yuhang He

doi:10.1117/12.851684

14 April 2010 Inner crack reconstruction and mechanical analysis for rock-specimen-based phase measuring profilometry

Yiping Cao, Yuhang He

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75225A (2010) https://doi.org/10.1117/12.851684
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

A higher precise inner crack three-dimenssional(3D) reconstructed method of rock specimens is presented. Two inner shapes of the crack are measured with Phase Measuring Profilometry (PMP), and their edges are drawn out by height information instead of the traditional method based on gray information. Subsequently contour matching and height matching are carried out with algorithms due to maximum correlativity. The inner width and volume of the crack are educed according to the fissure of a rock specimen's outer surface, and the 3D profile of the crack is reconstructed with a high repetitive precision superior to 20μm. The proposed method is effective for evaluating the crack's width of rock specimens in the exploitation of petroleum and natural gas with a mechanical analysis method. The experiment shows its feasibility and practicability.

Citation Download Citation

Yiping Cao and Yuhang He "Inner crack reconstruction and mechanical analysis for rock-specimen-based phase measuring profilometry", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75225A (14 April 2010); https://doi.org/10.1117/12.851684

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