Results 61 to 70 of about 111,470 (303)

Experimental modeling of sanding fracturing and conductivity of propped fractures in conglomerate: A case study of tight conglomerate of Mahu sag in Junggar Basin, NW China

Petroleum Exploration and Development, 2021
True tri-axial sanding fracturing experiments are carried out on conglomerate samples from the Permian Wuerhe Formation of Mahu sag, Junggar Basin, to study hydraulic fracture propagation geometry and quartz sand transport in matrix-supported fine ...
Yushi ZOU, Shanzhi SHI, Shicheng ZHANG, Tianxi YU, Gang TIAN, Xinfang MA, Zhaopeng ZHANG   +6 more
doaj   +1 more source

Effect of Disorder and Notches on Crack Roughness [PDF]

, 2007
We analyze the effect of disorder and notches on crack roughness in two dimensions. Our simulation results based on large system sizes and extensive statistical sampling indicate that the crack surface exhibits a universal local roughness of $\zeta_{loc}
A. Hansen, E. Bouchaud, E. Bouchbinder, J. M. Boffa, L. de Arcangelis, M. J. Alava, Mikko J. Alava, P. K. V. V. Nukala, Phani K. V. V. Nukala, Srđan Šimunović, Stefano Zapperi   +10 more
core   +3 more sources

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Permeability of self-affine rough fractures [PDF]

Physical Review E, 2000
11 pages, 9 ...
Drazer, German, Koplik, Joel
openaire   +3 more sources

Failure regime in (1+1) dimensions in fibrous materials

, 2001
In this paper, we introduce a model for fracture in fibrous materials that takes into account the rupture height of the fibers, in contrast with previous models.
A. T. Bernardes, A.T. Bernardes, A.W. Thompson, B.B. Mandelbrot, D. Sornette, E. Bouchaud, G. Pezzotti, G.G. Batrouni, H.E. Daniels, I. L. Menezes-Sobrinho, I.L. Menezes-Sobrinho, I.L. Menezes-Sobrinho, J. G. Moreira, J. Schmittbuhl, J.A. Rodrigues, J.G. Moreira, R. da Silveira, S.D. Zhang, S.D. Zhang, S.Z. Zhang, Z.Q. Mu   +20 more
core   +2 more sources

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Weak-inertial flow between two rough surfaces [PDF]

, 2005
“Oseen–Poiseuille” equations are developed from an asymptotic formulation of the three-dimensional Navier–Stokes equations in order to study the influence of weak inertia on flows between rough surfaces.
Bergeon, Alain, Lo Jacono, David, Plouraboué, Franck   +2 more
core   +3 more sources

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Impact of injection rate on smooth and rough fracture activation in granite: Laboratory-scale acoustic emission analysis

Journal of Rock Mechanics and Geotechnical Engineering
This study aims to understand the effect of injection rate on injection-induced fracture activation in granite. We performed water injection-induced slip tests on samples containing either a smooth or a rough fracture at four different injection rates ...
Rihua Jiang, Kang Duan, Yinlin Ji, Qiangyong Zhang, Luchao Wang, Yang Zheng   +5 more
doaj   +1 more source

Normal Stress Distribution of Rough Surfaces in Contact

, 2000
We study numerically the stress distribution on the interface between two thick elastic media bounded by interfaces that include spatially correlated asperities.
Alex Hansen, Barabási, Bouchaud, Bouchaud, Bouchon, Brown, Brown, Brown, Dieterich, Dmowska, Feder, Fernando A. de Oliveira, G. George Batrouni, Hansen, Jean Schmittbuhl, Landau, Lòpez, Mehrabi, Mendelsohn, Måløy, Power, Sahimi, Sayles, Schmittbuhl, Scholz, Simonsen, Stanley   +26 more
core   +2 more sources