Results 1 to 10 of about 3,524 (266)

The Impact Analysis of Beating Vibration for Active Magnetic Bearing

IEEE Access, 2019
In active magnetic bearing (AMB), the beat vibration will affect the flywheel rotary precision. A vibration model, which includes general dynamic stiffness and unbalance response different from the existing vibration research, is proposed to analyze the ...
Hui Gao, Xianhai Meng, Kejun Qian
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Drumming performance and underlying muscle activities in a professional rock drummer with lower-limb dystonia: a case study [PDF]

Frontiers in Neurology
Task-specific focal dystonia (TSFD), characterized by the loss of fine motor control and coordination, affects drummers’ lower-limb movements. This study explores lower-limb dystonia’s impact on drumming performance and underlying muscle activity in a ...
Kazuaki Honda, Kazuaki Honda, Shizuka Sata, Mizuki Komine, Satoshi Yamaguchi, SungHyek Kim, Makio Kashino, Shinya Fujii   +7 more
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Optomechanical energy enhanced BF-QEPAS for fast and sensitive gas sensing [PDF]

Photoacoustics
Traditional beat frequency quartz-enhanced photoacoustic spectroscopy (BF-QEPAS) are limited by short energy accumulation times and the necessity of a decay period, leading to weaker signals and longer measurement cycles.
Weilin Ye, Linfeng He, Weihao Liu, Zhile Yuan, Kaiyuan Zheng, Guolin Li   +5 more
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Phase Modulated Frequency Shifted Digital Holographic Vibrometry with Enhanced Robustness [PDF]

EPJ Web of Conferences, 2023
We report experimental results of a frequency shifted digital holography setup for spatially resolved vibrometry. A spatially homogeneous artificial phase modulation is used as a reference to correct for speckle noise. Furthermore, when superimposed upon
Dötzer Florian, Hommel Markus, Drese Klaus Stefan, Sinzinger Stefan   +3 more
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Signatures of Vibrational and Electronic Quantum Beats in Femtosecond Coherence Spectra [PDF]

The Journal of Physical Chemistry A, 2021
Femtosecond laser pulses can produce oscillatory signals in transient-absorption spectroscopy measurements. The quantum beats are often studied using femtosecond coherence spectra (FCS), the Fourier domain amplitude, and phase profiles at individual oscillation frequencies.
Paul C. Arpin, Daniel B. Turner
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Study on Beat Vibration of a High Temperature Superconducting EDS Maglev Vehicle at Low Speed

Applied Sciences, 2023
Vertical displacement acceleration and the pitch angle record produce the phenomenon of beat vibration when testing a 200 m electro-dynamic suspension (EDS) magnetic levitation (maglev) test vehicle with high-temperature superconducting (HTS) at the CRRC
Qing-Song Yu, Min Wang, Guo-Feng Yao, Shi-Xuan Zhang, Jing Yang, Nan Shao   +5 more
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Morphology-Dependent Coherent Acoustic Phonon Vibrations and Phonon Beat of Au Nanopolyhedrons [PDF]

ACS Omega, 2021
Coherent acoustic phonon vibrations of Au nanopolyhedrons, including nanocubes, nano-octahedrons, and nanocuboctahedrons, in aqueous solutions and poly(vinyl alcohol) (PVA) films, were investigated using transient absorption (TA) spectroscopy combined with finite element analysis based on continuum elastic theory.
Li Wang, Shohei Takeda, Ryota Sato, Masanori Sakamoto, Toshiharu Teranishi, Naoto Tamai   +5 more
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Beat vibration mechanism of a sluice pier under high-speed flood discharge excitation

Journal of Low Frequency Noise, Vibration and Active Control, 2020
The sluice pier prototype vibration test conducted in China Shuhe Hydropower Station shows that the vibration response of the measuring points exhibits a special form of vibration, which demonstrates intermittency and impact under high-speed flood ...
Huo-Kun Li, Yi-Wei Zhong, Bo-Wen Wei, Lei Du, Gang Wang   +4 more
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Analysis of Vibration Characteristics of Cross-Type Hydraulic Pipeline Based on Finite Element Method

Applied Sciences, 2023
Branched hydraulic lines are prone to leakage and break under complex working conditions. The coupling vibration problem caused by the fluid pressure beat and external mechanical excitation of the pump at the junction of the branch of the cross-type ...
Zhe Liu, Huiping Li, Baichun Li, Jiaxin Chen, Yong Liu   +4 more
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On Paper Machine Roll Contact with Beating Vibrations [PDF]

PAMM, 2006
AbstractBeating vibration phenomenon observed in paper machine roll units is studied. An analytical model of a roll system is described and an expression for the beating frequency is derived. Numerical results are compared to measurements and conclusions are made based on the observations. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
L. Yuan, V.‐M. Järvenpää
openaire   +1 more source