Nonlinear effects of induced unbalance in the rod fastening rotor-bearing system considering nonlinear contact
Sign Up to like & getrecommendations! Published in 2019 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-019-01645-7
Abstract: Rod fastening rotor (RFR) is characterized by discontinuity of contact interface and unbalance of multiple disks. There are few researches that focus on unbalance effect including magnitude and phase difference on the nonlinear dynamic characteristics… read more here.
Keywords: phase difference; fastening rotor; unbalance; rod fastening ... See more keywords
Novel phase difference extraction method of FPP system based on DWT and OMP algorithm
Sign Up to like & getrecommendations! Published in 2020 at "Optoelectronics Letters"
DOI: 10.1007/s11801-020-9159-1
Abstract: In this paper, to reduce the non-linear phase error caused by gamma effect of the digital projector, a novel phase difference extraction method is proposed. First, through multi-layer discrete wavelet decomposition (DWT), the compo-nents of… read more here.
Keywords: phase difference; phase; novel phase; method ... See more keywords
The influence of phase difference on the effect of multi-beam interference processing
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.166604
Abstract: Abstract The influence of phase difference in laser interference lithography system is often ignored by researchers. In this paper, we simulated the interference process of dual-beam, three-beam and four-beam, and the influence of phase difference… read more here.
Keywords: phase difference; interference; beam; interference processing ... See more keywords
A novel high accuracy optical path difference compensation method based on phase difference technology
Sign Up to like & getrecommendations! Published in 2021 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2020.106367
Abstract: Abstract A novel method, which is based on the phase difference between the filtered spectrum and simulated spectrum, is proposed to compensate for the optical path difference (OPD) demodulation error of the interferometer sensors. With… read more here.
Keywords: demodulation; accuracy; method; phase difference ... See more keywords
Composite optical fiber polarizer with ternary copolymer overlay for large range modulation of phase difference
Sign Up to like & getrecommendations! Published in 2017 at "Optical Materials"
DOI: 10.1016/j.optmat.2017.02.059
Abstract: Abstract In this work, a ternary copolymer composed of (E)-2-(4-((4-isocyanophenyl) diazenyl) phenoxy) ethyl methacrylate (2-CN), methacrylisobutyl polyhedral oligomeric silsesquioxane (MAPOSS) and 2,2,2-trifluoroethyl methacrylate (TFEMA) is synthesized and used as the overlay for composite optical fiber,… read more here.
Keywords: composite optical; phase difference; ternary copolymer; irradiation ... See more keywords
Finite element analysis of fretting fatigue under out of phase loading conditions
Sign Up to like & getrecommendations! Published in 2017 at "Tribology International"
DOI: 10.1016/j.triboint.2017.01.022
Abstract: Abstract Fretting fatigue is a complex phenomenon involving various factors, such as slip amplitude, coefficient of friction, shear load and loading phase difference. In this study, three numerical models are used to model the effect… read more here.
Keywords: phase difference; phase; finite element; phase loading ... See more keywords
Natural convection and thermal drift
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.426
Abstract: An analysis of natural convection in a horizontal, geometrically non-uniform slot exposed to spatially non-uniform heating has been carried out. The upper plate is smooth and isothermal, and the lower plate has sinusoidal corrugations with… read more here.
Keywords: drift; phase difference; natural convection; convection ... See more keywords
Experimental and Numerical Investigation on Dragonfly Wing and Body Motion during Voluntary Take-off
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-19237-w
Abstract: We present a detailed analysis of the voluntary take-off procedure of a dragonfly. The motions of the body and wings are recorded using two high-speed cameras at Beihang University. The experimental results show that the… read more here.
Keywords: phase difference; angle attack; dragonfly; take procedure ... See more keywords
Marginal Hilbert spectrum and instantaneous phase difference as total damage indicators in bridges under operational traffic loads
Sign Up to like & getrecommendations! Published in 2021 at "Structure and Infrastructure Engineering"
DOI: 10.1080/15732479.2021.1982994
Abstract: The challenges and future trends in the development of signal processing tools are being widely used for damage identification in bridges. Therefore, it is important to analyse the vibration signal... read more here.
Keywords: phase difference; instantaneous phase; hilbert spectrum; marginal hilbert ... See more keywords
Stop-and-go locomotion of superwalking droplets.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review. E"
DOI: 10.1103/physreve.103.043102
Abstract: Vertically vibrating a liquid bath at two frequencies, f and f/2, having a constant relative phase difference can give rise to self-propelled superwalking droplets on the liquid surface. We have numerically investigated such superwalking droplets… read more here.
Keywords: superwalking droplets; phase difference; stop locomotion; motion ... See more keywords
DOA Estimation With Non-Uniform Linear Arrays: A Phase-Difference Projection Approach
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Wireless Communications Letters"
DOI: 10.1109/lwc.2021.3102402
Abstract: Phase wrapping is a major problem in direction-of-arrival (DOA) estimation using phase-difference observations. For an antenna pair with an inter-antenna spacing greater than half of the wavelength ( $\lambda /2$ ) of the signal, phase… read more here.
Keywords: difference projection; doa estimation; phase; difference ... See more keywords