The Experts below are selected from a list of 63 Experts worldwide ranked by ideXlab platform
Tatsuya Kumazawa - One of the best experts on this subject based on the ideXlab platform.
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Instantaneous structural Intensity by the harmonic wavelet transform
Journal of Sound and Vibration, 2007Co-Authors: Takaaki Musha, Tatsuya KumazawaAbstract:Abstract The wavelet transform is an analysis method to measure the transient signals instead of the conventional Fourier analysis, which is difficult to obtain high-definition time–frequency maps for rapidly changing signals. In this paper, we present a new method for the calculation of Instantaneous structural Intensity on the beam by using the wavelet transform and the details of the computational algorithm to obtain structural Intensity by the harmonic wavelet transform is described. By applying this method for the data measured by hammering the beam structure, we confirmed that Instantaneous Intensity obtained by using the harmonic wavelet transform is a useful tool for analyzing the propagation of flexural waves on the beam structure.
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Instantaneous Intensity analysis of impulsive sound by the wavelet transform
Applied Acoustics, 2004Co-Authors: Takaaki Musha, Tatsuya KumazawaAbstract:Abstract The method for measuring Instantaneous Intensity by using the wavelet transform is proposed. We also conducted an analysis of the experimental data by using the hammering noise and confirmed the applicability of this calculation method.
L. Schuette - One of the best experts on this subject based on the ideXlab platform.
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ON THE VISUALIZATION AND ANALYSIS OF FLUID-STRUCTURE INTERACTION FROM THE PERSPECTIVE OF Instantaneous Intensity
Journal de Physique IV Colloque, 1992Co-Authors: Allison Romano, Kathryn Russo, E Williams, L. SchuetteAbstract:A formulation for the Instantaneous structural Intensity in thin cylindrical shells is presented, as well as a method for determining the tangential displacement components within a shell given a knowledge of the normal displacement and surface pressure only. These techniques are then applied to real, experimental data taken on a point-driven, fluid-loaded cylindrical shell, yielding the Instantaneous Intensity both within the shell and in the surrounding fluid due to an impulse delivered by the point driver. The mechanism of fluid-structure interaction in the very nearfield is briefly discussed. It is observed that in this case, only 21.5 % of the total energy delivered to the fluid by the structure, radiates to the farfield, while the remaining energy is seen to be delivered back into the structure by the fluid.
Kevin L Russo - One of the best experts on this subject based on the ideXlab platform.
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on the analysis of fluid structure interaction from the perspective of Instantaneous Intensity
Journal of the Acoustical Society of America, 1991Co-Authors: Anthony J Romano, Earl G Williams, Lawrence C Schuette, Kevin L RussoAbstract:A new formulation for the structural Intensity in thin shells is presented, as well as a method for determining the tangential displacement components within the shell given a knowledge of the normal displacement and surface pressure. These techniques are then applied to real, experimental data taken on a point‐driven, fluid‐loaded, cylindrical shell. A video will be presented that displays, simultaneously, the Instantaneous structural Intensity, as well as the Instantaneous Intensity in the fluid due to a transient pulse delivered by the point driver and the mechanism of fluid‐structure interaction in the very near field will be discussed in detail from the point of view of Instantaneous energy flow.
Takaaki Musha - One of the best experts on this subject based on the ideXlab platform.
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Instantaneous structural Intensity by the harmonic wavelet transform
Journal of Sound and Vibration, 2007Co-Authors: Takaaki Musha, Tatsuya KumazawaAbstract:Abstract The wavelet transform is an analysis method to measure the transient signals instead of the conventional Fourier analysis, which is difficult to obtain high-definition time–frequency maps for rapidly changing signals. In this paper, we present a new method for the calculation of Instantaneous structural Intensity on the beam by using the wavelet transform and the details of the computational algorithm to obtain structural Intensity by the harmonic wavelet transform is described. By applying this method for the data measured by hammering the beam structure, we confirmed that Instantaneous Intensity obtained by using the harmonic wavelet transform is a useful tool for analyzing the propagation of flexural waves on the beam structure.
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Instantaneous Intensity analysis of impulsive sound by the wavelet transform
Applied Acoustics, 2004Co-Authors: Takaaki Musha, Tatsuya KumazawaAbstract:Abstract The method for measuring Instantaneous Intensity by using the wavelet transform is proposed. We also conducted an analysis of the experimental data by using the hammering noise and confirmed the applicability of this calculation method.
Avishay Eyal - One of the best experts on this subject based on the ideXlab platform.
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evolution of the mean Instantaneous Intensity in fibers affected by polarization mode dispersion
Optics Letters, 2003Co-Authors: Avishay EyalAbstract:It is shown that the mean Instantaneous Intensity (MII) of a pulse propagating in an optical fiber affected by polarization mode dispersion is related to the frequency autocorrelation of the fiber’s Jones matrix through a Fourier transform. A simple derivation of the diffusion equation satisfied by the MII and the autocorrelation function of a Jones matrix is described.