... separated by a normalized distance of b / a = 8. The single-cylinder solution is shown for comparison. and (B33) A 22 = I − X 2 X 1 − 1 Y 2 B 2 u 2 The terms in the first summation represent waves which propagate outward...

..., in order to correct the phase mismatch caused by the influence of flow on sound propagation, the shear flow correction is added before using DWB. Experiments on sound source reconstruction are conducted in the environment with the flow. Acoustics data obtained via this method show the successful removal...

... power spectral density (PSD) in terms of circumferential and azimuthal wavenumber is manifested from the low frequency range to high frequency range. Acoustic wave propagation features in the spherical coordinate system as a particular case of the prolate spheroidal coordinate system are presented...

... February 1, 2018; published online March 27, 2018. Assoc. Editor: Ronald N. Miles. 21 03 2017 01 02 2018 Dynamics Modal analysis Propagation Sensors and actuators Radiation Sound source localization aims to determine the location of a target sound source with respect...

... modeling. Propagation Radiation The equations for flexural wave motion in thin plates first proposed by Uflyand [ 1 ] were subsequently shown by Mindlin [ 2 ] to follow from Hamilton's principle with kinetic and energy densities derived from the full elastodynamic equations of motion. Mindlin...

...). Machinery Mechanical signatures Propagation Structural damage identification Radiation As wind energy increases its industry market share, wind farm operators are investigating ways to decrease operation and maintenance costs [ 1 ]. Field experience has determined that blades are the highest...

... by proposing a numerical model to predict vibrations and reradiated noise due to railway traffic. The model is based on a substructuring approach, where the whole propagation media are considered, from the vibration source (the vehicle–track interaction) to the receiver (the building and its interior acoustic...

... IBRATION AND A COUSTICS . Manuscript received January 2, 2017; final manuscript received May 10, 2017; published online July 26, 2017. Assoc. Editor: Stefano Lenci. 02 01 2017 10 05 2017 Damping Noise control Propagation Vibration control Radiation The achievement...

... branch (a portion of the model is shown) Damping Dynamics Materials Noise control Propagation Vibration control Acoustics Radiation Passive noise control of a duct system often includes the introduction of an intermediate impedance discontinuity such as a quarter-wavelength...

... March 29, 2017; published online July 13, 2017. Assoc. Editor: Ronald N. Miles. 11 01 2017 29 03 2017 Flow induced vibration Propagation Radiation Flow induced noise References [1] Tester , B. , 1973 , “ Some Aspects of Sound Attenuation in Lined Ducts Containing...

... of ASME for publication in the J OURNAL OF V IBRATION AND A COUSTICS . Manuscript received October 19, 2016; final manuscript received March 28, 2017; published online July 6, 2017. Assoc. Editor: Ronald N. Miles. 19 10 2016 28 03 2017 Noise control Propagation Radiation...

... IBRATION AND A COUSTICS . Manuscript received September 6, 2016; final manuscript received March 16, 2017; published online June 22, 2017. Assoc. Editor: Mahmoud Hussein. 06 09 2016 16 03 2017 Damping Materials Modal analysis Propagation Structural acoustics Vibration control...

... over time as higher-order approximations are used in defining the simulations' initial conditions. Thus, the study results suggest that the higher-order multiple scales perturbation analysis captures long-term, nonlocalized invariant plane waves, which have the potential for propagating coherent...

... of a CAC for a passenger car is presented. The cooler consists of two conical volumes connected by a matrix of narrow ducts where the cooling of the air takes place. A recently developed model for sound propagation in narrow ducts that takes into account the attenuation due to thermoviscous boundary layers...

...: Sheryl M. Grace. 15 07 2016 05 01 2017 Acoustic emission Propagation Radiation A Fourier transform of a head-related impulse response (HRIR) [ 1 ], head-related transfer function (HRTF) [ 2 ] is essential for understanding spatial hearing [ 3 ]. In situations where...

.... Grace. 25 07 2016 05 12 2016 Acoustic emission Noise control Propagation Radiation Acoustic liners are currently the most effective passive control strategies in the reduction of aero-engine noise emissions [ 1 – 3 ]. To take account of background flow effects, different...

.... Editor: Theodore Farabee. 03 08 2016 25 11 2016 Propagation Radiation Nearfield acoustic holography (NAH) was first documented in the early 1980s [ 1 , 2 ] for the reconstruction of acoustic field based on the measurement of acoustic pressures on a hologram plane...

...Yong-Bin Zhang; Hua Chen; Chuan-Xing Bi; Gang Ma; Yu Gao The phenomenon that the tire/road noise is amplified when propagating outward from the hornlike geometry enveloped by the tire belt and the ground surface is referred to as the horn effect. In the present paper, three analytical models...

...H. Al Ba'ba'a; M. Nouh Owing to their ability to block propagating waves at certain frequencies, phononic materials of self-repeating cells are widely appealing for acoustic mitigation and vibration suppression applications. The stop band behavior achieved via Bragg scattering in phononic media...

... because of the wave propagation of pressure pulsation inside the volume vessel. In this study, the attenuation characteristics and wave propagation in a silencer with a hemispherical vessel are investigated. A mathematical model that takes into account the propagation of a one-dimensional wave...