Test on Meso-Damage Data of Marble under Dynamic Load

Xiao Hui Ni; Xiao Juan Li

doi:10.4028/www.scientific.net/AMM.105-107.1484

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 105-107Test on Meso-Damage Data of Marble under Dynamic...

Test on Meso-Damage Data of Marble under Dynamic Load

Abstract:

The failure damage of granite under axial load are caused by the propagation and coalescent of cracks at mesoscale, so it is of important theoretical value and practical significance to to understand the mechnical properties of rock by experimental research on meso damage of granite. The microfracturing process of the pre-crack marble sample on surrounding rock in immerged Long-big tunnel in Jinping Cascade II Hydropower Station under uniaxial compression is recorded by using the testing scheme. According to stereology theory, the propagation and coalescent of cracks at meso-scale are quantitatively investigated with digital technology. Therefore, the basic geometric information of rock microcracks such as area, angle, length, width, perimeter, is obtained from binary images after segmentation. The results show that the new meso-mechanical testing scheme on rock meso-damage could be used to quantitatively analyzed from the geometric information of rock microcracks.

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Periodical:

Applied Mechanics and Materials (Volumes 105-107)

Pages:

1484-1487

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.105-107.1484

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Online since:

September 2011

Authors:

Xiao Hui Ni, Xiao Juan Li

Keywords:

Digital Image Processing, Dynamic Load, Marble, Meso-Damage

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