Results 21 to 30 of about 575,017 (329)

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

Extension of the probe-tip error evaluation for areal surface roughness measurements using metrological AFM

open access: yesMeasurement: Sensors, 2021
Recently, there have been increasing demands not only for the conventional profile surface roughness measurements using atomic force microscopes (AFM) but also for areal surface roughness measurements.
Ichiko Misumi   +4 more
doaj   +1 more source

Contact angle influence on the pull-in voltage of microswitches in the presence of capillary and quantum vacuum effects [PDF]

open access: yes, 2007
Capillary condensation between the electrodes of microswitches influences the effective pull-in voltage in a manner that depends on the contact angle of the capillary meniscus and the presence of plate surface roughness.
Palasantzas, George,
core   +7 more sources

Evaluation of internal surface roughness in fiberglass pipes by surface roughness instruments [PDF]

open access: yesمهندسی منابع آب
Introduction: Investigation of the internal surface roughness of fluid transmission systems pipes is very important in the amount of energy loss. Different concepts and methods have been used to examine surface roughness.
Farnoush Aghaee Daneshvar   +3 more
doaj   +1 more source

Avalanches at rough surfaces

open access: yesPhysical Review E, 2000
8 Pages, 7 Figures (in 15 parts); accepted for publication in Physical Review ...
Barker, G. C., Mehta, Anita
openaire   +3 more sources

Defects formation mechanism and evaluation of surface roughness in machining Al/SiCp composites

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
During machining Al/SiCp composites, the machined surface takes on many defects such as grooves, pits, voids and protuberances, which greatly affect the characterization parameters of surface topography. However, a detailed investigation of the formation
Chunzheng DUAN   +3 more
doaj   +1 more source

Relationship between soil surface roughness and hydraulic roughness coefficient on sloping farmland

open access: yesWater Science and Engineering, 2012
The soil surface roughness and hydraulic roughness coefficient are important hydraulic resistance characteristic parameters. Precisely estimating the hydraulic roughness coefficient is important to understanding mechanisms of overland flow.
Zi-cheng Zheng, Shu-qin He, Fa-qi Wu
doaj   +1 more source

Influence of random roughness on cantilever curvature sensitivity [PDF]

open access: yes, 2010
In this work we explore the influence of random surface roughness on the cantilever sensitivity to respond to curvature changes induced by changes in surface stress.
Ergincan, O.   +2 more
core   +6 more sources

Surface correlations of hydrodynamic drag for transitionally rough engineering surfaces [PDF]

open access: yes, 2016
Rough surfaces are usually characterised by a single equivalent sand-grain roughness height scale that typically needs to be determined from laboratory experiments.
Busse, Angela   +2 more
core   +1 more source

Measurements of Soil Surface Roughness During the Fourth Microwave Water and Energy Balance Experiment: April 18 through June 13, 2005

open access: yesEDIS, 2019
Passive microwave signatures have been used to retrieve geophysical parameters, such as soil temperature [Njoku and Li, 1999], moisture [Jackson et al., 1995], and surface roughness [Wegmüller and Mätzler, 1999].
Mi-joung Jang   +3 more
doaj   +5 more sources

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