acoustic propagation
Efficient Computation and Uncertainty Analysis of Underwater Acoustic Propagation based on Kriging Surrogate Model
... We artificially initialize the sample points uniformly but necessarily including the ends of the bounds due to a fact that Kriging method is good at interpolating rather than extrapolating. The single-frequency FOR3D ...
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Modelling acoustic propagation under ice in support of AUV missions in Antarctica
... influence acoustic propagation?’ was primarily reported in chapter ...to acoustic beacon ...realistic acoustic environment model for beacon propagation in the Antarctic is a good ...
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Investigating acoustic propagation in gassy marine sediments using a bubbly gel mimic
... The acoustic techniques available for the determination of bubble size distributions in fluids are presently more sophisticated than those available for gassy ...for acoustic propagation in marine ...
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The estimation of bubble populations in the surf zone by inversion of acoustic propagation
... l\ledwin used the concept of the extinction cross section D;;rt of a bubble in order to estimate the number and size distribution of bubbles excited by an acoustic plane wave.. The extin[r] ...
193
Acoustic propagation in a flow: numerical simulation of the time-harmonic regime
... Abstract. We consider the time-harmonic acoustic radiation of a source in a moving fluid. The prob- lem is set in a two-dimensional infinite duct and the mean flow is a subsonic parallel shear flow, with a regular ...
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Acoustic wave propagation in rivers: an experimental study
... on propagation effects (Geay et ...Therefore, acoustic waves are modified by the envi- ronment along their propagation paths, from noise sources to hydrophone ...an acoustic wave guide where ...
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Non-Destructive Determination of Magnetic Audio Tape Degradation for Various Tape Chemistries Using Spectroscopy and Chemometrics
... work, acoustic emission (AE) monitoring during compressive loading was employed to investigate microcrack formation and coalescence in cement paste specimens ...crack propagation were made based on fracture ...
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Use of Acoustic Emission for Testing Resistance of Hooves
... The acoustic emission method is based on physical measurements of elastic and traction waves propagating through the object material or on its ...wave propagation in a given material, as well as to ...
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Channel Modeling Network Analysis In Sea Water Medium For High Speed Using EM Waves
... as acoustic communication, optical communication, electromagnetic (EM) communication ...The acoustic wireless communication technology has low data rate capacity and high propagation delay such as ...
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On Discovery of the Twelfth and Thirteenth New Nondispersive SH-SAWs in 6 mm Magnetoelectroelastics
... surface acoustic waves ...The propagation velocities were obtained in explicit forms that take into account the contribution of the vacuum material ...(the propagation velocity becomes imaginary) ...
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Analysis of explosive activity of Tungurahua volcano using seismic-acoustic data
... seismo- acoustic field experiment of June-August 2004 only 10 ash-clouds were clearly observed due to rainy and cloudy ...preferential propagation direction from East to West (mean θ m = 266°, circular ...
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Periodic Solitary Wave Impulses in Finite Length Granular Chains
... the propagation characteristics of solitary wave, which is described by Nesterenko’s theory, ...of acoustic wave along the chain, which exhibits strong nonsmooth ...
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A Lagrangian Approach for Computational Acoustics with Meshfree Method
... The GFD method, also called the meshless finite difference method, was first discussed for fully arbitrary meshes by Jensen [46] in 1972. Perrone and Kao [47] also contributed to the development of this method at that ...
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Dynamics of mechanical waves in periodic graphene nanoribbon assemblies
... the acoustic wave propagation characteristics of graphene nanoribbons (GNRs) of the type (8,0) and (0,8) using an equivalent atomistic-continuum FE model previously developed by some of the authors, where ...
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Survey on Various Types of Noise and Methods for Noise Removal
... The underwater acoustic channel (UAC) is known to supply poor communications channel. The channel medium is extremely assimilative and therefore the transmission bandwidth is proscribed. Additionally, the channel ...
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Acousto Diffusive Waves in a Piezoelectric Semiconductor Piezoelectric Sandwich Structure
... the acoustic waves in a sandwich structure consisting of semicon- ducting layer between two piezoelectric ...for acoustic and optical modes of wave propagation in case of symmetric and asymmetric ...
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paper.pdf
... Doppler-shifted propagation paths are rendered by reading interpolated delay taps from the delay buffer using linear resampling, then mixing at the appropriate place in the output ...sound propagation ...
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Attenuation Effect of Expansion Configuration and Acoustic Material on Propagation of Blast Waves in a Duct
... the acoustic material of glass wool had much efficacy ...linear acoustic theory held for waves of infinitesimal pressure amplitudes, and not for waves of finite amplitudes generated in the exhaust pipe, ...
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Properties of Electron Ion Acoustic Solitary Waves in a Magnetized Degenerate Quantum Plasma
... El acoustic waves propagating in a degenerate quantum plasma composed of relativistically magnetized quantum electrons and light ions in the presence of stationary heavy ...
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Acoustic Emission Characterization of Matrix Damage Initiation in Woven CFRP Composites
... the acoustic waves response, often analysing signal count, amplitude and energy ...cracking propagation and failure mechanisms of CFRP ...wave propagation in CFRP composites but also in natural fibre ...
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