Results 21 to 30 of about 4,025,166 (302)
Applied Sciences, 2022 This study deals with the selection of the cutting process using the grey fuzzy relation approach. The analysis was performed using plasma arc machining, laser beam machining, and abrasive waterjet machining on three different workpiece thicknesses with ...
Dejan Lukic +6 more
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The quality of surface water in Salekhard [PDF]
E3S Web of Conferences, 2021 The work includes the natural waters’ quality control within the precincts of Salekhard. Shaytanka River, Poluy River and Lebyazhye Lake were discovered. By waters’ quality control was used pollution index. The work is done in terms of Scientific work (NIR) “Assessment of the health risk of the population of the Yamalo-Nenets Autonomous District in ...
Pechkina Yulia +4 more
openaire +2 more sources
Suppression of Base Excitation of Rotors on Magnetic Bearings
International Journal of Rotating Machinery, 2007 This paper deals with rotor systems that suffer harmonic base excitation when supported on magnetic bearings. Magnetic bearings using conventional control techniques perform poorly in such situations mainly due to their highly nonlinear characteristics ...
Steven Marx, C. Nataraj
doaj +1 more source
Hard machining of agricultural machines parts
Research in Agricultural Engineering, 2013 For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more.
R. Drlička +4 more
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Densification of Wood – Chemical and Structural Changes Due to Ultrasonic and Mechanical Treatment
BioResources, 2021 This paper presents the state of the art of wood surface densification method by pressing with ultrasound. The properties of ultrasound and its effects on the structure and properties of wood, as well as ultrasound-induced chemical changes in wood ...
Oksana Rudak +4 more
doaj +1 more source
Micromachines, 2023 The surface/subsurface damage of engineering ceramics after machining has a great influence on the service performance of parts. In order to obtain a high grinding surface quality of engineering ceramics, and take silicon nitride ceramic as a research ...
Haipeng Yan +5 more
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Measuring the role of surface chemistry in silicon microphotonics [PDF]
, 2005 Utilizing a high quality factor (Q~1.5×10^6) optical microresonator to provide sensitivity down to a fractional surface optical loss of alphas[prime]~10^–7, we show that the optical loss within Si microphotonic components can be dramatically altered by ...
Borselli, Matthew +2 more
core +2 more sources
Micromachines, 2022 The surface condition of the fixed abrasive pad (FAP) has a significant impact on its machining performance, workpiece material removal rate (MRR), and surface roughness.
Zhankui Wang +5 more
doaj +1 more source
Characterisation of the fused silica surface quality with a β-source [PDF]
, 2018 A method to characterise the quality of a fused silica surface using a β-source is presented. Two fused silica bars (5×10×400mm3) were fabricated for the Cherenkov detector for proton Flux Measurement installed at vacuum chamber of the Super Proton ...
Addesa, F, cavoto, G, Rossi, R
core +1 more source
Journal of Manufacturing and Materials Processing, 2019 This work presents an analysis of relationships between the non-linear vibrations in machining and the machined surface quality from an analytical model based on a predictive machining theory.
El Mehdi Kibbou +3 more
doaj +1 more source