Results 91 to 100 of about 21,573 (293)

Measurement of Coal Fracture Surface Roughness.

open access: yesShigen-to-Sozai, 1991
In this paper, the fracture surface roughness of coal samples from the four coal mines in Hokkaido was measured and analyzed. The main results obtained are summarized as follows:(1) The surface of the coal fracture is a random surface varying in some places smooth and others jagged.
ZHANG, Xuntao, HIGUCHI, Kiyoshi
openaire   +2 more sources

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

open access: yesAdvanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky   +3 more
wiley   +1 more source

Simulation of Particle-Fluid Interaction in Fractal Fractures Based on the Immersed Boundary-Lattice Boltzmann Method

open access: yesGeofluids, 2020
In order to reveal the influence of particles on fluid flow characteristics in rough fractures under fluid-solid coupling, a range of fracture systems with varying roughness were generated using the Weierstrass-Mandelbrot function.
Shenggui Liu   +4 more
doaj   +1 more source

Electrified Damage in Motion Systems

open access: yesAdvanced Engineering Materials, EarlyView.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir   +2 more
wiley   +1 more source

Study on diffusion law and mechanism of different types of single fracture grouting slurry

open access: yesMeikuang Anquan
The small area pre-grouting of water-bearing layers is often used in shaft excavation, clarifying the slurry diffusion law is the basis for determining the slurry diffusion range and formulating the grouting schemes.
Xiaofei LIU   +3 more
doaj   +1 more source

Mechanical Stiffness and Permeability of a Reservoir‐Scale Rough Fracture During Closure

open access: yes
International audienceWe study how the normal stiffness and the permeability of a realistic rough fracture at the field scale are linked and evolve during its closure up to the percolation threshold. We base our approach on a well-established self-affine
Deng, Qinglin   +3 more
core   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

open access: yesAdvanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou   +5 more
wiley   +1 more source

Two-phase flow in smooth and rough walled single fracture

open access: yes, 2012
Bibliography: p. 170-172Most pages are in colour.The research documented in this thesis describes an experimental study of co-current flow of oil and water in neutrally wet smooth and rough-walled single fractures.
Al-Turki, Ali Ahmed Bakeer
core   +1 more source

Polymer Interface Enables Reversible Quasi‐Solid Sulfur Conversion in Sodium‐Sulfur Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The polymer interface enables a stable quasi‐solid sulfur conversion pathway in room‐temperature Na─S batteries. The coating regulates Na+ transport, stabilizes the cathode–electrolyte interphase, and accommodates mechanical stress, suppressing electrolyte decomposition and sulfur migration, thereby improving reaction uniformity, reducing polarization,
Reza Andaveh   +12 more
wiley   +1 more source

Inertial Flow‐Driven Enhancement of Solute Mixing and Partitioning at Rough‐Walled Fracture Intersections: Experimental and Numerical Investigations

open access: yesWater Resources Research
This study investigates the impact of the transition from viscous linear to inertial nonlinear flows on solute mixing and partitioning at rough‐walled fracture intersections, using direct observations of flow dynamics and solute partitioning processes ...
Dahye Kim, In Wook Yeo
doaj   +1 more source

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