Effect of liquid nitrogen cooling on mechanical characteristics and fracture morphology of layer coal under Brazilian splitting test

P Hou, Y Xue, F Gao, F Dou, S Su, C Cai… - International Journal of …, 2022 - Elsevier
Abstract Liquid nitrogen (LN 2) fracturing, as an environmentally friendly waterless fracturing
technology, is given more and more attention in coalbed methane (CBM) exploitation. In this …

On the fracture mechanism of rock-like materials with interbedded hard-soft layers under Brazilian tests

L Yang, M Sharafisafa, L Shen - Theoretical and Applied Fracture …, 2021 - Elsevier
The fracture of layered rocks subjected to tensile stress is involved in various subsurface
energy-related activities. Many studies have numerically investigated the fracture evolution …

Indirect tensile strength test on heterogeneous rock using square plate sample with a circular hole

X Liu, B Gong, K Song, H Liu - Lithosphere, 2024 - pubs.geoscienceworld.org
An indirect testing method for determining the tensile strength of rock-like heterogeneous
materials is proposed. The realistic failure process analysis method, which can consider …

Cracking behaviours of layered specimen with an interface crack in Brazilian tests

X Chang, T Guo, S Zhang - Engineering Fracture Mechanics, 2020 - Elsevier
Crack initiation and propagation from a pre-existing interface crack are of great importance
in assessing the integrity and stability of layered rocks, rock/concrete systems and other …

[HTML][HTML] Size effect and lateral pressure effect on the mechanical resistance of columnar jointed basalt

Y Wang, B Gong, C Tang, X Yang - … Journal of Rock Mechanics and Mining …, 2023 - Elsevier
To reveal the size effect and lateral pressure effect of columnar jointed basalts (CJBs), the
meso-damage mechanics, statistical strength theory, continuum mechanics and digital …

Experimental and numerical investigation on the effect of bedding plane properties on fracture behaviour of sandy mudstone

Y Meng, H Jing, X Liu, Q Yin, L Zhang, H Liu - Theoretical and Applied …, 2021 - Elsevier
The fracture behaviour of layered rocks is strongly influenced by bedding planes, which
usually have lower strength than rock matrix. In this study, experimental and numerical …

Investigation of Phyllite-based Brazilian tests and fracture failure patterns via AE and PFC3D

R Bai, C He, G Xu, S Wang, Y Shu - Bulletin of Engineering Geology and …, 2024 - Springer
Phyllite, characterized by well-developed foliation, is a low-grade metamorphic rock. This
study offers a comprehensive investigation into its failure patterns and micro-fracture …

Fracture Process and Failure Mode of Brazilian Discs with Cracks of Different Angles: A Numerical Study

X Luo, G Zhao, P Xiao, W Zhao - Mathematics, 2022 - mdpi.com
In order to determine the effect of internal cracks on the tensile failure of materials, a hybrid
finite–discrete element method was used to analyze the Brazilian disc test with cracks of …

Out-of-plane ductile failure of notch: Evaluation of Equivalent Material Concept

AR Torabi, B Saboori, MR Kamjoo - … Engineering and Mechanics, An Int'l …, 2020 - dbpia.co.kr
In the present study, the fracture toughness of U-shaped notches made of aluminum alloy
Al7075-T6 under combined tension/out-of-plane shear loading conditions (mixed mode I/III) …