Results 1 to 10 of about 1,214,867 (266)

Investigation of Gallium Arsenide Deformation Anisotropy during Nanopolishing via Molecular Dynamics Simulation

open access: yesMicromachines
Crystal orientation significantly influences deformation during nanopolishing due to crystal anisotropy. In this work, molecular dynamics (MD) simulations were employed to examine the process of surface generation and subsurface damage.
Bo Zhao   +4 more
doaj   +1 more source

Comparative Analysis of Minimum Chip Thickness, Surface Quality and Burr Formation in Micro-Milling of Wrought and Selective Laser Melted Ti64

open access: yesMicromachines, 2023
Selective laser melting (SLM) is a three-dimensional (3D) printing process that can manufacture functional parts with complex geometries as an alternative to using traditional processes, such as machining wrought metal.
Uçan Karakılınç   +4 more
doaj   +1 more source

WATER QUALITY INDICES FOR THE MANAGEMENT OF SURFACE WATER QUALITY

open access: yesWater Science and Technology, 1988
The need for a simple, objective and reproducible numeric scale to represent water quality in terms that all types of user will accept has been apparent for the last twenty years. Subjective classifications of water quality have been made, but they are seldom reproducible and lack sensitivity.
D. H. Newsome, M. A. House
openaire   +1 more source

Feasibility Study of Robot Technology for Vehicle Carbody Surface Paint Maintenance in Urban Rail Transit

open access: yesChengshi guidao jiaotong yanjiu
Objective In the maintenance process of urban rail transit vehicles, the cleaning, grinding and polishing of the vehicle carbody surface paint often require a long time when done manually.
ZHANG Fengli, ZHENG Li, DING Chaofeng
doaj   +1 more source

A Novel Ultrasonic Trepanning Method for Nomex Honeycomb Core

open access: yesApplied Sciences, 2020
The vertical surface is a common and typical characteristic structure among Nomex honeycomb core components. However, the conventional high-speed milling and ultrasonic cutting struggle to meet the high-quality machining requirements of a vertical ...
Dingyi Sun   +4 more
doaj   +1 more source

Build Orientation Optimization Based on Weighted Analysis of Local Surface Region Curvature

open access: yesApplied Sciences, 2020
Build orientation becomes a hot issue in 3D printing, which has a significant impact on the surface quality, support structure and final cost of the fabricated model.
Hongshuai Guo   +3 more
doaj   +1 more source

Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid

open access: yesProduction Engineering Archives, 2023
This paper deals with changes in selected properties of composite material and surface degradation after exposure to an acidic environment. A carbon fiber-reinforced composite (CFRP) produced from prepregs was tested.
Kojnoková Tatiana   +3 more
doaj   +1 more source

Impact of pigments on self-compacting concrete

open access: yesMokslas: Lietuvos Ateitis, 2011
We describe an impact of using iron oxide pigment on self-compacting concrete (SCC) properties. We have experimented with adding portions of iron oxide pigment from 3% to 6% into cement paste.
Ernestas Ivanauskas, Donatas Grigonis
doaj   +1 more source

Surface quality and surface waves on subwavelength-structured silver films [PDF]

open access: yesPhysical Review E, 2007
We analyze the physical-chemical surface properties of single-slit, single-groove subwavelength-structured silver films with high-resolution transmission electron microscopy and calculate exact solutions to Maxwell's equations corresponding to recent far-field interferometry experiments using these structures.
Gay, G.   +6 more
openaire   +4 more sources

Evaluation of Double-Sided Planetary Grinding Using Diamond Wheels for Sapphire Substrates

open access: yesCrystals, 2018
Double-sided planetary grinding as an efficient and precise machining method is used for the rapid thinning and flattening process of sapphire substrate.
Lijuan Wang   +3 more
doaj   +1 more source

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