Results 21 to 30 of about 18,001 (260)

Experimental study of heat transfer by water flowing through smooth and rough rock fractures

Energy Reports, 2019
It is important to have an accurate understanding of heat transfer process of water flowing through fractures for geothermal energy extraction and utilization.
Yinfei Luo, Weilin Xu, Yude Lei, Ping Wu, Guangxiong Qin, Ruishou Ba   +5 more
doaj   +1 more source

Evaluating the Influence of Fracture Roughness and Tortuosity on Fluid Seepage Based on Fluid Seepage Experiments

Applied Sciences, 2022
The roughness and tortuosity of fractures are essential parameters affecting the fluid flow in a jointed rock mass. This paper investigates the influence of fracture roughness and tortuosity on fluid seepage behavior.
Shuai Wang, Ying Xu, Yanbo Zhang, Qinglei Yu, Ling Wang   +4 more
doaj   +1 more source

Study on permeability mechanism of rough fractured coal considering slippage effect

Meitan kexue jishu
In order to explore the influence of the surface roughness of coal fractures on the permeability characteristics of coal, coal samples from Liupanshui area of Guizhou Province were selected, and the pore structure of coal was characterized by scanning ...
Xingyi ZENG, Bobo LI, Jianhua LI, Shulei DUAN, Yunna DING, Junsong YANG   +5 more
doaj   +1 more source

Correlation between Fatigue Crack Growth Behavior and Fracture Surface Roughness on Cold-Rolled Austenitic Stainless Steels in Gaseous Hydrogen

Metals, 2018
Austenitic stainless steels are often considered candidate materials for use in hydrogen-containing environments because of their low hydrogen embrittlement susceptibility.
Tai-Cheng Chen, Sheng-Tsan Chen, Leu-Wen Tsay, Ren-Kae Shiue   +3 more
doaj   +1 more source

Influence of fracture parameters on hydraulic shear seepage characteristics of granite

Case Studies in Thermal Engineering
To reveal the influence mechanism of different fracture parameters on the permeability characteristics of hot dry rock after hydraulic shear. The self-made high temperature true triaxial hydraulic shear test device and rock roughness profile tester were ...
Jupeng Tang, Honghao Yu, Zhihao Wei, Xiao Zhang   +3 more
doaj   +1 more source

Mechanical Properties of the Hard Sandstone Fracture Surface under Hydrochemical Corrosion

Journal of Engineering, 2019
To realize a quantitative expression of change laws of the fracture surface shear strength with hydrochemical damage and to obtain optimal weakening effect of solution on the fracture surface strength, hard roof sandstone specimens containing hydraulic ...
Bin-wei Xia, Ming-xiang Xu, Chao Pan
doaj   +1 more source

Failure mechanisms and surface roughness statistics of fractured Fontainebleau sandstone [PDF]

Physical Review E, 2007
In an effort to investigate the link between failure mechanisms and the geometry of fractures of compacted grains materials, a detailed statistical analysis of the surfaces of fractured Fontainebleau sandstones has been achieved. The roughness of samples of different widths W is shown to be self affine with an exponent zeta=0.46 +- 0.05 over a range of
Ponson, Laurent, Auradou, Harold, Pessel, Marc, Lazarus, Veronique, Hulin, Jean-Pierre   +4 more
openaire   +4 more sources

Surface characteristics analysis of fractures induced by supercritical CO2 and water through three-dimensional scanning and scanning electron micrography

Journal of Rock Mechanics and Geotechnical Engineering, 2021
Morphology of hydraulic fracture surface has significant effects on oil and gas flow, proppant migration and fracture closure, which plays an important role in oil and gas fracturing stimulation.
Hao Chen, Yi Hu, Jiawei Liu, Feng Liu, Zheng Liu, Yong Kang, Xiaochuan Wang   +6 more
doaj   +1 more source

Solid‐State Diffusion and Intermetallic Phase Formation in Roll‐Bonded Mg–Zn Composites With Kirigami‐Patterned Inlay

Advanced Engineering Materials, EarlyView.
Mg–Zn composites with a thickness of 0.21 mm were fabricated using roll bonding of a kirigami‐patterned Mg alloy inlay within a Zn matrix. Thermal activation following this process led to the formation of tailored intermetallic structures, which provided the composite with enhanced flexural strength.
Yaroslav Frolov, Oleksandr Bobukh, Christian Klose, Florian Nürnberger, Hans Jürgen Maier   +4 more
wiley   +1 more source

Mechanical properties of NiTi and CuNiTi wires used in orthodontic treatment. Part 2: Microscopic surface appraisal and metallurgical characteristics

Dental Press Journal of Orthodontics, 2014
OBJECTIVE: This research aimed at comparing the qualitative chemical compositions and the surface morphology of fracture regions of eight types of Nickel (Ni) Titanium (Ti) conventional wires, superelastic and heat-activated (GAC, TP, Ormco, Masel ...
Marco Abdo Gravina, Cristiane Canavarro, Carlos Nelson Elias, Maria das Graças Afonso Miranda Chaves, Ione Helena Vieira Portella Brunharo, Cátia Cardoso Abdo Quintão   +5 more
doaj   +1 more source