Fracture Mechanical Properties of Three—Dimensional Irregular Sandstone Particles Based on Digital-Image

Shi, Kai-wen; Zuo, Yu-jun; Sun, Wenjibin; Líu, Hao; Lin, Jian-yun; Li, Taotao; Chen, Bin; Zheng, Lu-lin

doi:10.1007/s10706-022-02195-6

Cited by 2 publications

(2 citation statements)

References 32 publications

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“…Grayscale and color data are used to differentiate the geometric and spatial distributions of mesoscopic components. Through the application of a predefined threshold to partition each medium, an image is generated, portraying the heterogeneous nature of the material distribution [32]. As shown in Figure 3a, the scanning test apparatus used was an X-ray 3D microscope-equipped nanoVoxel-4000 system.…”

Section: Ct Scanning Experiments and Numerical Image Characterization...mentioning

confidence: 99%

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Characterization of the Fine-Scale Evolution of Damage in Shale under the Influence of Two-Way Stress Differences Based on CT Images and Fractal Theory—The Example of the Anba Dyke in the Wufeng–Longmaxi Formation

Lan,

Yang,

et al. 2024

Fractal Fract

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To better understand the influence of different levels of two-way stress differences on the development of damage in Anchang diametral laminar shale in the northern Qianbei area, a numerical model of laminar shale with a representative fine-scale structure was established by using RFPA3D-CT. A triaxial compression test was conducted; a three-dimensional mesoscale fracture box dimension algorithm based on digital images was generated by using MATLAB R2020b; and the fractal characteristics were quantitatively analyzed. The results showed that under the influence of the horizontal stress ratio and two-way stress, the greater the two-way stress is, the more notable the plastic characteristics of specimen damage are, and the higher the residual strength is. The specimens with lower two-way stress exhibited obvious brittle damage characteristics. The difficulty degree of complex fracture network formation increased with the increase in the horizontal tension ratio, and the degree of increase in the fracture network complexity gradually decreased. At a horizontal stress ratio of 1.25, the fractal dimension was the highest, which indicates that the cracks were the most pronounced. Fracture formation after specimen damage was the most common phenomenon. Under the condition of a lower horizontal stress ratio, a large number of fracture structures could be generated in shale specimens after damage, promoting the expansion of natural fractures.

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Section: Ct Scanning Experiments and Numerical Image Characterization...mentioning

confidence: 99%

“…heterogeneous nature of the material distribution [32]. As shown in Figure 3a, the scanning test apparatus used was an X-ray 3D microscope-equipped nanoVoxel-4000 system.…”

Section: Ct Scanning Experiments and Numerical Image Characterization...mentioning

confidence: 99%

Characterization of the Fine-Scale Evolution of Damage in Shale under the Influence of Two-Way Stress Differences Based on CT Images and Fractal Theory—The Example of the Anba Dyke in the Wufeng–Longmaxi Formation

Lan,

Yang,

et al. 2024

Fractal Fract

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A Method for Obtaining Rock Drilling Resistance Characteristics Based on Rock Cuttings (种基于岩屑的凿岩抗性特性获取方法)

Chen,

Shi,

Xiao

et al. 2024

Preprint

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Fracture Mechanical Properties of Three—Dimensional Irregular Sandstone Particles Based on Digital-Image

Cited by 2 publications

References 32 publications

Characterization of the Fine-Scale Evolution of Damage in Shale under the Influence of Two-Way Stress Differences Based on CT Images and Fractal Theory—The Example of the Anba Dyke in the Wufeng–Longmaxi Formation

Characterization of the Fine-Scale Evolution of Damage in Shale under the Influence of Two-Way Stress Differences Based on CT Images and Fractal Theory—The Example of the Anba Dyke in the Wufeng–Longmaxi Formation

A Method for Obtaining Rock Drilling Resistance Characteristics Based on Rock Cuttings (种基于岩屑的凿岩抗性特性获取方法)

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