Results 21 to 30 of about 3,526 (288)
Average Mechanical Impedance for Random Vibration [PDF]
The Journal of the Acoustical Society of America, 1972 The response of a system to a random stationary process applied at selected points of a mechanical structure is readily formulated in terms of the mechanical impedance matrix of these points. However, in practice the results suffer from many uncertainties: uncertainties in the measurements of the mechanical impedances; uncertainties in the boundary ...
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Radio Physics and Radio Astronomy, 2016 Purpose: A problem of electromagnetic wave diffraction by a longitudinal slot cut in a waveguide wide wall is solved. The slot is cut in a wide wall of a rectangular waveguide and radiates in a half-space above a perfectly conducting plane where two ...
S. L. Berdnik +3 more
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Vibration control studies using an impedance method [PDF]
SPIE Proceedings, 2003 This paper presents a vibration control methodology that is useful in practical applications where the system to be controlled is difficult to model due to the presence of uncertainties or complex boundary conditions. The impedance control method uses a power flow approach wherein the controller is designed such that power flow into the structure is ...
G. M. Kamath +2 more
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Theoretical and simulation analysis of piezoelectric liquid resistance captor filled with pipeline
Materials Research Express, 2018 This paper designs a kind of Piezoelectric liquid resistance capture energy device, by using the superposition theory of the sheet deformation, the calculation model of the displacement curve of the circular piezoelectric vibrator and the power ...
Li Zheng +5 more
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IMPEDANCE VIBRATOR WITH ARBITRARY POINT OF EXCITATION [PDF]
Progress In Electromagnetics Research B, 2008 The approximate analytical solution of the integral equation concerning the current in a thin straight vibrator with complex surface impedance has been obtained. The vibrator is located in unlimited space and is excited in an arbitrary point along its length.
Mikhail V. Nesterenko +3 more
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Applied SciencesCartilage conduction hearing aids (CCHAs) are new devices that have attracted attention in recent years for external auditory canal atresia. In these devices, a vibrator is attached to the ear cartilage to transmit sound through vibration. In this study,
Shin-ichi Ishikawa +2 more
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014 Acoustic transducers with large radiation surfaces are used to handle planar object without any physical contact. To more accurately describe the dynamic performance of such transducer with strong coupling effect due to the large lateral scales, a ...
Jin LI, Pinkuan LIU, Han DING
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Correction of Apparent Viscoelasticity of Skin Surface [PDF]
, 1995 The body structures under the skin surface, such as bones and tendon, have an influence on the stiffness evaluation observed from the surface. In this case, the observed stiffness should be called an apparent stiffness.
Irie, Takashi +2 more
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A Technique of Direct Tension Measurement of a Strung Fine Wire [PDF]
, 1998 We present a new technique of direct measurement of wire tensions in wire chambers. A specially designed circuit plucks the wire using the Lorentz force and measures the frequency of damped transverse oscillations of the wire.
Asano +18 more
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Vortex-induced vibration prediction via an impedance criterion [PDF]
Journal of Fluid Mechanics, 2020 D. Sabino +3 more
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