scholarly journals Damage detection in sluice hoist beams subject to excitation at resonance frequency band based on local primary frequency

2019 ◽  
Vol 28 ◽  
pp. 40-45
Author(s):  
M. S. Cao ◽  
Q. Y. Wei ◽  
W. Xu ◽  
D. Novák ◽  
R. Pukl ◽  
...  
Keyword(s):  
Damage Detection ◽  
Resonance Frequency ◽  
Frequency Band ◽  
At Resonance ◽  
Primary Frequency

scholarly journals CHARACTERISTICS OF CASED ELECTRICAL INSULATION SYSTEM OF ASYNCHRONOUS ELECTRICAL MACHINES AT RESONANCE FREQUENCY

2019 ◽  
Vol 2019 (4) ◽  
pp. 48-55
Author(s):  
G.V. Bezprozvannych ◽  
◽  
I.A. Kostukov ◽  
A.V. Roginskiy ◽  
◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Electrical Machines ◽  
Electrical Insulation ◽  
Insulation System ◽  
At Resonance

Square-shaped metal screens in the infrared to terahertz spectral region: Resonance frequency, band gap, and bandpass filter characteristics

2008 ◽  
Vol 104 (2) ◽  
pp. 023103 ◽  
Author(s):  
O. Sternberg ◽  
K. P. Stewart ◽  
Y. Hor ◽  
A. Bandyopadhyay ◽  
J. F. Federici ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Band Gap ◽  
Frequency Band ◽  
Spectral Region ◽  
Bandpass Filter

Frequency Reconfigurable Epsilon Negative Metamaterial Antenna

2017 ◽  
Vol 7 (3) ◽  
pp. 1473
Author(s):  
Arrauzah Razak ◽  
M. K. A. Rahim ◽  
H. A. Majid ◽  
N. A. Murad
Keyword(s):  
Electric Field ◽  
Resonance Frequency ◽  
Software Tool ◽  
Unit Cell ◽  
Reconfigurable Antenna ◽  
Circular Shape ◽  
At Resonance ◽  
Metamaterial Antenna ◽  
Frequency Reconfigurable Antenna ◽  
Radius Size

This paper proposes metamaterial (MTM) inspired frequency reconfigurable antenna based on thecircular electric field coupled (ELC) resonator. It is composed of circular shape ELC resonator with the radius size of 7 mm. By inserting two switches between the gaps at both side of the circular ELC resonator, it is possible to switch ON or OFF the unit cell. The antenna has been simulated using CST Microwave Studio software tool. The simulation result shows that the proposed antenna is capable of reconfiguring between two different frequencies which are2.18 GHz and 2.64 GHz. The simulated bandwidth at -10 dB is 4.12 % at resonance frequency of 2.18 GHz and 8.7% at 2.64 GHz

Selection of informative frequency band in local damage detection in rotating machinery

2014 ◽  
Vol 48 (1-2) ◽  
pp. 138-152 ◽  
Author(s):  
Jakub Obuchowski ◽  
Agnieszka Wyłomańska ◽  
Radosław Zimroz
Keyword(s):  
Damage Detection ◽  
Frequency Band ◽  
Rotating Machinery ◽  
Local Damage ◽  
Selection Of

Control of Ehrlich Tumor Growth by Electromagnetic Waves at Resonance Frequency (In Vivo Studies)

2005 ◽  
Vol 24 (1) ◽  
pp. 9-21 ◽  
Author(s):  
M. A. Fadel ◽  
Reem H. El-Gebaly ◽  
Amany A. Aly ◽  
Fakhry F. Ibrahim
Keyword(s):  
Tumor Growth ◽  
Resonance Frequency ◽  
Electromagnetic Waves ◽  
In Vivo Studies ◽  
Ehrlich Tumor ◽  
At Resonance

A Resonant Air-Standard Heat Engine

2010 ◽  
Author(s):  
C. Richards ◽  
R. Richards ◽  
H. Bardaweel ◽  
M. Anderson
Keyword(s):  
Resonance Frequency ◽  
Heat Engine ◽  
Lumped Parameter Model ◽  
Local Maxima ◽  
Standard Heat ◽  
At Resonance ◽  
Lumped Parameter ◽  
Piston Assembly

A resonant heat engine in which the piston assembly is replaced by a sealed elastic cavity is modeled and analyzed. A linearized nondimensional lumped-parameter model is derived and used to investigate the factors that control the performance of the engine. The results show that operation at resonance is beneficial. Local maxima in efficiency are encountered at odd multiples of the resonance frequency. Efficiency is enhanced by small damping.

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