Results 31 to 40 of about 3,479 (265)

High harmonic generation in SF6: Raman-excited vibrational quantum beats [PDF]

open access: yesJournal of Physics B: Atomic, Molecular and Optical Physics, 2007
submitted to ...
Walters, Zachary B.   +2 more
openaire   +2 more sources

An experimental research of dynamic characteristics for long wall shearer cutting unit gearbox in oblique cutting

open access: yesInternational Journal of Coal Science & Technology, 2020
Oblique cutting is a working condition in fully mechanized mining whose function is making it possible for coal shearer to cut coal wall. Coal shearer often exhibit large vibration amplitudes in oblique cutting since the shearer is forced to be bent.
Jue Wang, Shiyao Song, Peng Li
doaj   +1 more source

Reducing preferred listening levels in headphones through coherent audiotactile stimulation [PDF]

open access: yesJASA Express Letters
Using headphones may expose the listener to potentially harmful levels of sound. This study examines whether introducing tactile vibrations to the listening experience would encourage them to reduce their headphone volume.
Eirini Liapikou, Jeremy Marozeau
doaj   +1 more source

On the influence of loading force on the vibration characteristics of a giant magnetostrictive transducer

open access: yesAlexandria Engineering Journal, 2022
The vibration characteristics of a giant magnetostrictive transducer play a significant role in the stability and processing effect of spinning ultrasonic machining. The output characterization of the giant magnetostrictive transducer is unstable subject
Pengyang Li   +6 more
doaj   +1 more source

A data-driven approach for modifying the rope dynamics model of the flexible hoisting system

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In the flexible hoisting system, past research focused on the physical modeling without considering complex external environmental variables such as guided rails excitation and shaft effect, leading to a significant deviation between the physical model ...
Shuai Mao   +6 more
doaj   +1 more source

Research on Low-Speed Driving Model of Ultrasonic Motor Based on Beat Traveling Wave Theory

open access: yesActuators, 2021
This paper proposes a driving method, the superimposed pulse driving method, that can make an ultrasonic motor run at a low speed. Although this method solves the periodic oscillation of speed in a traditional low-speed driving motor, it still has a ...
Weijun Zeng   +4 more
doaj   +1 more source

Terahertz beats of vibrational modes studied by femtosecond coherent Raman spectroscopy [PDF]

open access: yesRevue de Physique Appliquée, 1987
A recently developed femtosecond coherent Raman technique allows the measurement of Fourier transform coherent Raman spectra with high-frequency differences. The simultaneous excitation of different vibrational modes with a broad-band tunable driving force leads to a strong beating of the coherent Raman probe scattering. The high time resolution of the
Leonhardt, R.   +3 more
openaire   +3 more sources

Correction to: Beating vibration phenomenon of a very large floating structure [PDF]

open access: yesJournal of Marine Science and Technology, 2018
In the original publication, section numbers “5.4 and 5.4.1” are incorrectly arranged. The corrected section numbers are listed with section subtitles in this Correction.
Hisayoshi Endo, Hideyuki Suzuki
openaire   +1 more source

Experimental and Numerical Vibration Analysis of Hydraulic Pipeline System under Multiexcitations

open access: yesShock and Vibration, 2020
Pipeline systems in aircraft are subjected to both hydraulic pump pressure fluctuations and base excitation from the engine. This can cause fatigue failures due to excessive vibrations.
Peixin Gao   +4 more
doaj   +1 more source

Experimental Research on 2 : 1 Parametric Vibration of Stay Cable Model under Support Excitation

open access: yesAdvances in Materials Science and Engineering, 2016
For 2 : 1 parametric vibration problem of stay cable under support excitation, a sliding support only in the vertical moving is designed to simulate the bridge stay cable’s vibration test model.
Li-Na Zhang   +4 more
doaj   +1 more source

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