Results 71 to 80 of about 111,470 (303)
Transient damage spreading and anomalous scaling in mortar crack surfaces [PDF]
, 2008 The scaling properties of a post-mortem mortar crack surface are investigated. The root mean square of the height fluctuations is found to obey anomalous scaling properties, but with three exponents, two of them characterizing the local roughness (zeta ...
Bouchaud, Elisabeth +3 more
core +1 more source
Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere
Advanced Engineering Materials, EarlyView.This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland +5 more
wiley +1 more source
Research on Seepage Characteristics of Y-Shaped Fractures under Different Fracture Roughness
Geofluids, 2022 Fractures are widely distributed in coal, and studying the seepage characteristics of fluids in fractures is of great significance for unconventional natural gas extraction and prevention of gas disasters. In this work, based on the W-M fractal function,
Ruifeng Tang +5 more
doaj +1 more source
Energies, 2021 An enhanced geothermal system (EGS) proposed on the basis of hot dry rock mining technology has become a focus of geothermal research. A novel procedure for coupled simulation of thermal and fluid flow models (NPCTF) is derived to model heat flow and ...
Feng Xiong, Chu Zhu, Qinghui Jiang
doaj +1 more source
Advanced Engineering Materials, EarlyView.Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm +5 more
wiley +1 more source
Frontiers in Physics, 2023 For unconventional oil and gas reservoirs and deep carbonate reservoirs, temporary plugging fracturing is an important technology to improve oil and gas production.
Yang Wang, Yu Fan, Xiaojiao Wang
doaj +1 more source
Random and Correlated Roughening in Slow Fracture by Damage Nucleation [PDF]
, 2006 We address the role of the nature of material disorder in determining the roughness of cracks which grow by damage nucleation and coalescence ahead of the crack tip.
Ben-Dayan, Ido +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
Experimental study on proppant placement in rough fractures with shear slippage in shale reservoirs [PDF]
Youqicang pingjia yu kaifaUnder the influence of fracture shear slippage and wall roughness, the fluid flow channels within the fractures are uneven, making the transport and placement patterns of proppant carried by fracturing fluids more complex.
ZHANG Tao, CHEN Hongli, WANG Kun, GOU Haoran, ZHANG Yifan, TANG Tang, ZHOU Hangyu, ZUO Hengbo
doaj +3 more sources
Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesThe complex natural fracture network with self-affine rough surface and branching characteristics significantly impacts the gas transport in shale gas reservoirs. However, its effects on the permeability have not been studied so far.
Bowen Hu +3 more
doaj +1 more source