Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Manufacturing Processes"
DOI: 10.1016/j.jmapro.2017.08.011
Abstract: Abstract Real-time measurement and controlling the degree of weld penetration is a key issue in developing intelligent welding machines. To a certain extent, these welding machines can perform in a manner similar to that of… read more here.
Keywords: weld pool; oscillation; real time; oscillation frequency ... See more keywords
AA6013 aluminium alloy deformed by forward-backward rotating die (KoBo): Microstructure and mechanical properties control by changing the die oscillation frequency
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Materials Processing Technology"
DOI: 10.1016/j.jmatprotec.2017.10.043
Abstract: Abstract The precipitation hardened AA 6013 aluminium alloy was extruded by means of the KoBo extrusion method with an oscillating die. In the presented paper, the influence of two different die rotation frequencies on the… read more here.
Keywords: microstructure mechanical; die oscillation; mechanical properties; aluminium alloy ... See more keywords
The oscillation of stationary weld pool surface in the GTA welding
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Materials Processing Technology"
DOI: 10.1016/j.jmatprotec.2018.01.018
Abstract: Abstract A three-dimensional transient numerical model of a pulsed GTA welding is established based on the volume of fluid (VOF) method to study the oscillation of stationary weld pool surface. The detecting and sensing method… read more here.
Keywords: weld pool; oscillation; oscillation frequency;
Enhancement of temperature-modulated NbO2-based relaxation oscillator via interfacial and bulk treatments
Sign Up to like & getrecommendations! Published in 2023 at "Nanotechnology"
DOI: 10.1088/1361-6528/acb778
Abstract: This work demonstrates oscillation frequency modulation in a NbO2-based relaxation oscillator device, in which the oscillation frequency increases with operating temperature and source voltage, and decreases with load resistance. An annealing-induced oxygen diffusion at 373… read more here.
Keywords: based relaxation; frequency; temperature; oscillation frequency ... See more keywords
Frequency and Power Scaling in mm-Wave Colpitts Oscillators
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2017.2788861
Abstract: The maximum oscillation frequency depends on the oscillator topology and the loss of oscillator’s active and passive components. The oscillator phase noise, and hence the oscillator figure-of-merit ( $FOM$ ), degrades much faster than the… read more here.
Keywords: frequency; oscillator; phase noise; oscillation frequency ... See more keywords
Oscillation Frequency Component-Based Protection Scheme for DC Microgrid
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2021.3115089
Abstract: A fast and accurate protection scheme for a dc microgrid enhances the service reliability and improves power quality. Thus, the identification of fault should be accurate and speedy. This article proposes a protection scheme for… read more here.
Keywords: protection scheme; protection; fault; oscillation frequency ... See more keywords
A Versatile Mass-Sensing Platform With Tunable Nonlinear Self-Excited Microcantilevers
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Nanotechnology"
DOI: 10.1109/tnano.2018.2829404
Abstract: A versatile mass-sensing platform based on the nonlinear dynamical response of a microcantilever embedded in a self-excitation feedback loop is proposed. It is experimentally shown that the delay imposed in the feedback loop by an… read more here.
Keywords: mass sensing; versatile mass; mass; sensing platform ... See more keywords
FRACTAL OSCILLATION AND ITS FREQUENCY-AMPLITUDE PROPERTY
Sign Up to like & getrecommendations! Published in 2021 at "Fractals"
DOI: 10.1142/s0218348x2150105x
Abstract: When an oscillator vibrates in a porous medium or along an unsmooth surface, a fractal model can be adopted using the two-scale fractal derivative. This paper elucidates a simple but effective method for fast and… read more here.
Keywords: amplitude property; property; oscillation frequency; frequency amplitude ... See more keywords
A Study on the Effect of Adhesive Cavities on the Scuffing Initiation in a Sliding Contact
Sign Up to like & getrecommendations! Published in 2021 at "Materials"
DOI: 10.3390/ma14154296
Abstract: Scuffing is a particularly problematic wear phenomenon in sliding contact that has not yet been fully elucidated. The complicated mechanism of the development of this phenomenon results from the simultaneous influence of many factors. There… read more here.
Keywords: adhesive cavities; frequency; sliding contact; study effect ... See more keywords