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Characterizations on fracture process zone of plain concrete

Journal of Civil Engineering and Management, 2019
The fracture property of concrete is essential for the safety and durability analysis of concrete structures. Investigating the characteristics of the fracture process zone (FPZ) is of great significance to clarify the nonlinear fracture behaviour of ...
Yuxiang Tang, Hongniao Chen
doaj   +4 more sources

A nonlinear hydraulic fracture propagation criterion considering the fracture process zone

International Journal of Mining Science and Technology
The linear elastic hydraulic fracture criterion is not applicable to deep reservoirs when nonlinear behavior is present over an extensive zone at the fracture tip.
Senlin Luo, Guangqing Zhang, Yansen Ling, Jinmiao Tan, Renyi Qiu, Bin Sun   +5 more
doaj   +2 more sources

An Evaluation on Fracture Toughness in SUS304 at High Strain Rate Considering Process Zone [PDF]

EPJ Web of Conferences, 2021
Some research works report the relationships between transformation toughening and process zone. In SUS304, the reduction of transformation toughening at high strain rate is expected from the result of a small punch test.
Yoshida Shiguma, Iwamoto Takeshi
doaj   +1 more source

Pilot evaluation of a fracture process zone in a modified compact tension specimen by X-ray tomography [PDF]

Fracture and Structural Integrity, 2017
In the case of quasi-brittle material, there is a zone of non-linear behaving material, near the crack tip. A major part of this zone forms a socalled fracture process zone (FPZ), where mechanisms of material toughening take place.
J. Klon, S. Seitl, H. �imonov, Z. Kerner, I. Kumpov�, D. Vavr�k   +5 more
doaj   +3 more sources

Fracture process zone in granite [PDF]

Journal of Geophysical Research: Solid Earth, 2000
In uniaxial compression tests performed on Aue granite cores (diameter 50 mm, length 100 mm), a steel loading plate was used to induce the formation of a discrete shear fracture. A zone of distributed microcracks surrounds the tip of the propagating fracture. This process zone is imaged by locating acoustic emission events using 12 piezoceramic sensors
Zang, A., Wagner, F., Stanchits, S., Janssen, C., Dresen, G.   +4 more
openaire   +4 more sources

Combined Finite-Discrete Element Modelling of Dynamic Rock Fracture and Fragmentation during Mining Production Process by Blast

Shock and Vibration, 2021
A combined finite-discrete element method (FDEM) is proposed to model the dynamic fracture, fragmentation, and resultant muck-piling process during mining production by blast in underground mine.
Huaming An, Yushan Song, Hongyuan Liu, Haoyu Han   +3 more
doaj   +1 more source

Study on development law of water-conducting fault zone in deep gently inclined double coal seam mining

Meikuang Anquan, 2022
In order to study the development characteristics of water-conducting fracture zone in deep-buried gently inclined multi-coal seam mining, taking the overlapping mining area of 2-1 coal and 2-2 coal in Shicaocun Coal Mine as the research object, through
HOU Enke, LIU Bo, LONG Tianwen, XU Wei, WEI Qiming, MA Jinyong   +5 more
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Experimental Study on the Oil Recovery Performance of CO2 Huff-and-Puff Process in Fractured Tight Oil Reservoirs

Geofluids, 2022
In order to investigate energy supply capacity and oil production contribution of near-fracture and fracture-free zone in fractured tight oil reservoirs, a series of CO2 huff-and-puff tests were designed and carried out in different experimental ...
Kun Qian, Yu Huang, Yanfeng He, Xiangji Dou, Xiaojun Wu   +4 more
doaj   +1 more source

Structural formation and evolution mechanisms of fracture plugging zone

Petroleum Exploration and Development, 2021
A coupled CFD-DEM method is used to simulate the formation process of fracture plugging zone. A photo-elastic system characterizing mesoscale force chain network developed by our own is used to model the pressure evolution in fracture plugging zone to ...
Chengyuan XU, Jingyi ZHANG, Yili KANG, Feng XU, Chong LIN, Xiaopeng YAN, Haoran JING, Xiangyu SHANG   +7 more
doaj   +1 more source

Meso-Experimental Study on Tensile Characteristics of Clay

Advances in Civil Engineering, 2021
This paper presents an experimental study on the meso-structure change of clay using an innovative testing system. It aims to evaluate the tensile characteristics of clay.
Yi Zhou, Meng Cui, Dequan Zhou, Xiaojia Wang, Xiao Fu   +4 more
doaj   +1 more source