Results 11 to 20 of about 3,526 (288)
A Multi-Polarized Reconfigurable Plasma Antenna Array
International Journal of Antennas and Propagation, 2023 Research on antenna reconfiguration is important in antenna applications. We present design of a multi-polarized plasma antenna with 40.68 MHz radio frequency (RF) power supplies and several discharge tubes filled with argon (neon) and mercury ...
Zhen Sun +4 more
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Design and numerical simulation of novel giant magnetostrictive ultrasonic transducer
Results in Physics, 2017 This paper provides a design method of a novel giant magnetostrictive ultrasonic transducer utilized in incremental sheet metal forming. The frequency equations of the ultrasonic vibrator were deduced and the corresponding correctness verified by the ...
Pengyang Li +5 more
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Performances of a Contactless Energy Transfer System for Rotary Ultrasonic Machining Applications
IEEE Access, 2020 In rotary ultrasonic machining (RUM), the contactless energy transfer (CET) system based on the rotary transformer can replace the well-established slip ring technology to supply power for the revolving ultrasonic vibrator.
Xueming Zhu, Liping Liu, Houjun Qi
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Ultrawideband antenna arrays on Сlavin radiators
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2023 Background. Slot antennas have become widespread due to their good electrodynamic parameters, ease of excitation, and convenient geometry for integration into various devices.
P.G. Fomin +3 more
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IEEE Access, 2016 In this paper, a new longitudinal-torsional (L&T) hybrid vibrator driven by two longitudinal ultrasonic transducers is proposed for ultrasonic-assisted wire drawing.
Shen Liu +3 more
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Method for calculating a cylindrical ultrasonic cavitation filter chamber with a regeneration effect
Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2020 Introduction. The creation of modern ultrasonic cavitation equipment for filtering working fluids in various technological processes is associated with the study of the interaction of a liquid load with ultrasonic emitters, taking into account the ...
O. F. Luhovskyi +6 more
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Radiation impedance of torsionally vibrating seismic sources [PDF]
GEOPHYSICS, 1983 The thickness and shear‐wave velocity of a surface layer can theoretically be determined from seismic radiation impedance measurements using a torsional vibrator. These studies also provide physical insight into vibrator‐earth interaction. The radiation impedance of a circular disk vibrating torsionally on an anelastic half‐space has resonance peaks ...
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Radio Physics and Radio Astronomy, 2015 A problem of electromagnetic wave excitation by finite-dimensional material bodies located in an arbitrary electrodynamic volume was formulated. The problem was reduced to solution of two-dimensional integral equations for electrical surface currents on ...
S. L. Berdnik +3 more
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Effect of Tendon Vibration on Hemiparetic Arm Stability in Unstable Workspaces [PDF]
, 2015 Sensory stimulation of wrist musculature can enhance stability in the proximal arm and may be a useful therapy aimed at improving arm control post-stroke.
Conrad, Megan O. +3 more
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Mechanical Impedance Methods in Vibration [PDF]
Nature, 1959 Colloquium on Mechanical Impedance Methods for Mechanical Vibrations Presented at the ASME Annual Meeting, New York, N.Y., December 2, 1958. Edited by R. Plunkett. (Sponsored by Shock and Vibrating Committee: Applied Mechanics Division.) Pp. vi + 145. (New York: The American Society of Mechanical Engineers, 1958.) 5.50 dollars.
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