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Roughness of Sandpile Surfaces [PDF]

open access: yesPhysical Review E, 2003
We study the surface roughness of prototype models displaying self-organized criticality (SOC) and their noncritical variants in one dimension. For SOC systems, we find that two seemingly equivalent definitions of surface roughness yields different ...
A. Vespignani   +20 more
core   +4 more sources

A grinding surface roughness class recognition combining red and green information [PDF]

open access: yesMetrology and Measurement Systems, 2023
The current machine vision-based surface roughness measurement mainly relies on the design of feature indicators associated with roughness to measure the surface roughness. However, the process is tedious and complicated.
Jiefeng Huang   +3 more
doaj   +1 more source

A comparison between profile and areal surface roughness parameters [PDF]

open access: yesMetrology and Measurement Systems, 2021
Surface roughness has an important influence on the service performance and life of parts. Areal surface roughness has the advantage of accurately and comprehensively characterizing surface microtopography.
Baofeng He, Siyuan Ding, Zhaoyao Shi
doaj   +1 more source

Milling, surface roughness, surface hardness, microhardness

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2022
For our country, which has few renewable energy supplies, energy sustainability is becoming increasingly vital. Foam concrete is a porous building material having air spaces created by foaming agents, as well as a high energy efficiency due to its pores.
Hazal Cemile TOPUZ
doaj   +1 more source

Surface roughness influence on the quality factor of high frequency nanoresonators [PDF]

open access: yes, 2008
Surface roughness influences significantly the quality factor of high frequency nanoresonators for large frequency - relaxation times within the non-Newtonian regime, where a purely elastic dynamics develops.
G. Palasantzas, Roukes M. L., Wong A.-C.
core   +13 more sources

A novel scheme for simulating the effect of microstructure surface roughness on the heat transfer characteristics of subcooled flow boiling

open access: yesCase Studies in Thermal Engineering, 2021
In this study, the RPI wall boiling model is developed to investigate the surface roughness effect in the subcooled flow boiling. The surface roughness is simulated by two different schemes.
Hasan Alimoradi   +3 more
doaj   +1 more source

Sensitivity of C-Band SAR Polarimetric Variables to the Directionality of Surface Roughness Parameters

open access: yesRemote Sensing, 2021
Surface roughness is an important factor in many soil moisture retrieval models. Therefore, any mischaracterization of surface roughness parameters (root mean square height, RMSH, and correlation length, ʅ) may result in unreliable predictions and soil ...
Zohreh Alijani   +4 more
doaj   +1 more source

Rough-surface shadowing of self-affine random rough surfaces [PDF]

open access: yesJournal of Quantitative Spectroscopy and Radiative Transfer, 2007
Light scattering from self-affine homogeneous isotropic random rough surfaces is studied using the ray-optics approximation. Numerical methods are developed to accelerate the first-order scattering simulations from surfaces represented as single-connected single-valued random fields, and to store the results of the simulations into a numerical ...
Parviainen, Hannu, Muinonen, Karri
openaire   +2 more sources

Study on the Pool Boiling Heat Transfer Characteristics of Aluminum Plate with Directional Surface Roughness [PDF]

open access: yes한국정밀공학회지, 2018
Rolled and extruded aluminum (Al) products have been widely used in heat exchanging systems using the boiling heat transfer (BHT) mechanism. The BHT coefficient can be increased on a rough surface due to the activation of the nucleation sites.
Jun Kim, Dong In Hong, Seok Min Kim
doaj   +1 more source

Surface Roughness Modeling of Material Extrusion PLA Flat Surfaces

open access: yesInternational Journal of Polymer Science, 2023
Complex forms may be easily created with additive manufacturing methods, but managing surface roughness remains a difficulty, even for flat surfaces, because surface quality is dependent on numerous parameters.
Kaltrine Jakupi   +2 more
doaj   +1 more source

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