Results 1 to 10 of about 697,622 (332)

Abrasive Wear Resistance of Electrospark Coatings on Titanium Alloys

open access: yesTribology in Industry, 2022
According to most researchers, improving the tribological characteristics of titanium alloys at this stage is most appropriate through surface modification tribotechnologies.
Mara Kandeva   +8 more
doaj   +1 more source

Does water lubrication affect friction differently for rocks and soils? Evidence and open questions

open access: yesStudia Geotechnica et Mechanica, 2022
The present paper focuses on the shear strength exhibited by rocks and soils when sliding along dry and wet surfaces, with this mechanism of failure being strongly related to the water lubrication phenomenon.
Cafaro F., Hamad A., Monterisi L.
doaj   +1 more source

ROUGH RINGS, ROUGH SUBRINGS, AND ROUGH IDEALS

open access: yesJournal of Fundamental Mathematics and Applications (JFMA), 2022
The basic concept in algebra that is set theory can be expanded into rough sets. Basic operations on the set such as intersections, unions, differences, and complements can still apply to rough sets. In addition, one of the applications of rough sets is the use of rough matrices in decision making.
Fakhry Asad Agusfrianto   +2 more
openaire   +1 more source

Effect of Flame Spray Deposition Parameters on The Microstructure of Al2 O3 - 13 %TiO2 Coatings Applied Onto 7075 Aluminum Alloy [PDF]

open access: yesMaterials Research, 2018
In this work, the effect of flame spraying parameters on physical, structural and microstructural characteristics of Al2O3 - 13 wt.% TiO2 (AT-13) coatings were studied.
José Alexander Arboleda   +5 more
doaj   +2 more sources

Environmental Effects on the Coefficient of Friction and Tack Adhesion of Formulated Waterborne Coatings

open access: yesFrontiers in Mechanical Engineering, 2022
Waterborne coatings emit a low amount of harmful volatile organic compounds (VOCs) into the atmosphere compared to solvent-cast coatings. A typical waterborne formulation for agricultural applications consists of colloidal thermoplastic particles (latex)
J.L. Hall   +7 more
doaj   +1 more source

Sticking to rough surfaces using functionally graded bio-inspired microfibres [PDF]

open access: yesRoyal Society Open Science, 2017
Synthetic fibrillar adhesives inspired by nature, most commonly by the gecko lizard, have been shown to strongly and repeatedly attach to smooth surfaces.
Serdar Gorumlu, Burak Aksak
doaj   +1 more source

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation [PDF]

open access: yesMaterials Research, 2019
The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to obtain S-N curves in polished and laser treated conditions.
Fernanda Potomati   +6 more
doaj   +1 more source

Volatility is Rough [PDF]

open access: yesSSRN Electronic Journal, 2014
Estimating volatility from recent high frequency data, we revisit the question of the smoothness of the volatility process. Our main result is that log-volatility behaves essentially as a fractional Brownian motion with Hurst exponent H of order 0.1, at any reasonable time scale.
Gatheral, Jim   +2 more
openaire   +3 more sources

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   +11 more sources

REGULARITIES OF THE AVERAGE HEAT EXCHANGE FOR PIPES WITH ROUGH WALLS AND ROUGH FLAT CHANNELS UNDER ONE-SIDED THERMAL LOADING

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2018
. Objectives The aim of the present work is to carry out mathematical modelling of heat exchange in rough flat channels and round pipes with rough walls during one-sided heating.
Igor' E. Lobanov
doaj   +1 more source

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