Results 21 to 30 of about 82,561 (281)

Simulation-Based and Experimental Investigation of Micro End Mills with Wiper Geometry

open access: yesMicromachines, 2021
One of the major advantages of micromachining is the high achievable surface quality at highly flexible capabilities in terms of the machining of workpieces with complex geometric properties.
Timo Platt   +3 more
doaj   +1 more source

Reforming Integrated with Oxidation in Micro-Heat Exchanger Reactor with Circular Micro-Channels [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2014
Steam reforming integrated with oxidation of methanol was considered with numerical simulation. The parallel micro-channels with circular cross sections were used.
Faramarz Hormozi   +2 more
doaj   +1 more source

Regularities Of Stability For Printing Forms Of Offset Printing With Dampening In Short Runs [PDF]

open access: yes, 2016
The complex research for the changes in the properties of the printing plates' printing and gap elements influenced by the printing process short runs was conducted, that allowed to determine the change of printing and gap elements' surface microgeometry,
Skyba, V. (Vasyl)   +2 more
core   +2 more sources

Numerical and Experimental Investigation of the Effect of Micro Restriction Geometry on Gas Flows through a Micro Orifice

open access: yesFluids, 2022
This study experimentally and numerically investigates the effects of the nozzle/needle distance (clearance) and supply pressure on single phase compressible gas flow in a micro orifice with needle restriction, which play important roles in many ...
Akam Aboubakri   +7 more
doaj   +1 more source

Pore-scale direct numerical simulation of Haines jumps in a porous media model

open access: yes, 2020
Direct numerical simulations are presented for a porous media model consisting of two immiscible fluids, an invading and defending phase, in a two-dimensional micro-geometry filled with randomly sized and randomly distributed cylinders.
Afkhami, Shahriar   +2 more
core   +1 more source

Enhancing heat transfer at the micro-scale using elastic turbulence

open access: yesTheoretical and Applied Mechanics Letters, 2015
Small concentrations of a high-molecular-weight polymer have been used to create so-called “elastic turbulence” in a micro-scale serpentine channel geometry. It is known that the interaction of large elastic stresses created by the shearing motion within
R.D. Whalley   +3 more
doaj   +1 more source

Finite Element Analysis of Grain Size Effects on Curvature in Micro-Extrusion

open access: yesApplied Sciences, 2020
The precision and accuracy of the final geometry in micro-parts is crucial, particularly for high-value-added metallic products. Micro-extrusion is one of the most promising processes for delivering high-precision micro-parts.
Pavaret Preedawiphat   +6 more
doaj   +1 more source

Macroscopic simulation of the liner honing process [PDF]

open access: yes, 2012
The form quality, the roughness and the surface appearance produced by honing minimizes the friction of the piston in the liner. The process is however mechanically complex and the selection of the process parameters is currently based on empirical ...
DUMUR, Didier   +2 more
core   +5 more sources

Strong exciton-photon coupling in self-hybridized organic–inorganic lead halide perovskite microcavities

open access: yesNanophotonics, 2023
Controlling coherent light–matter interactions in semiconductor microcavities is at the heart of the next-generation solid-state polaritonic devices. Organic–inorganic hybrid perovskites are potential materials for room-temperature polaritonics owing to ...
Tahir Zeeshan   +8 more
doaj   +1 more source

Numerical homogenization of piezoelectric textiles with electrospun fibers for energy harvesting [PDF]

open access: yesFracture and Structural Integrity, 2014
Piezoelectric effects are exploited in an increasing number of micro- and nano-electro-mechanical systems. In particular, energy harvesting devices convert ambient energy (i.e.
C. Maruccio, L. De Lorenzis
doaj   +2 more sources

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