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Xiaoyun Zhang, Xiaoan Zhang, Jiangang Xu, Li Yang and Gao Song
In the actual operation of urban rail transit (URT), the vibrations of steel-spring floating-slab tracks (SSFSTs) are amplified, and the track structure has strong low-frequency acoustic radiation; therefore, it is necessary to study the acoustic radiati...
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Yung-Wei Chen, Cheng-Cheng Pan, Yi-Hsien Lin, Chao-Feng Shih, Jian-Hong Shen and Chun-Ming Chang
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Ante Skoblar, Goranka ?timac Roncevic, Domagoj Lanc and Sanjin Braut
In this paper, the dynamic response of a Euler?Bernoulli beam subjected to transverse harmonic forces is calculated. The method of separation of variables combined with the mode shape superposition method, which includes the determination of eigenvalues,...
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Alexander M. Rehm
It is shown that a gold-plated device mounted on a tenor saxophone, forming a small bridge between the mouthpiece and the S-bow, can change two characteristics of the radiated sound: (1) the radiated acoustic energy of the harmonics with emission maxima ...
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Hongjie Ji, Ming Zhang and Byoung Sam Kim
To shorten the measurement period and reduce experiment costs, we investigated the parameter conversion between the experiment results of the controlled pass-by (CPB) method and alternative close proximity (A-CPX) method for automotive applications. The ...
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Lamberto Tronchin, Massimiliano Manfren and Vincenzo Vodola
The physics of musical instruments often uses modal analysis as one of the most important methods for describing the behavior of sound chests and their acoustic radiation. However, some studies conducted in Europe (Wogram), Japan (Suzuki) and the United ...
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Lamberto Tronchin, Massimiliano Manfren and Vincenzo Vodola
Among the studies of musical instruments, one important, sometime underestimated discipline, is represented by ethnomusicology. The acoustic analyses on ethnic musical instruments (M.I.) are much more infrequent if compared to those on classical M.I. Thi...
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Andreas Sebastian Schmelt and Jens Twiefel
Herein, we present a novel approach to the spec-radiation method (a method of acoustical holography) for determining the sound distribution on a tilted particleboard by calculating a single plane and rotation in the frequency domain. The tilted particleb...
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Vitalii Didkovskyi,Sergey Naida,Oleksandr Drozdenko,Kateryna Drozdenko
Pág. 6 - 12
Experimental confirmation of the possibility of real-time measurement of the internal (deep) temperature of a biological object by thermal acoustic radiation with an accuracy of at least 0.2 °C using an acoustic thermometer implementing the modified...
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Drasko Masovic and Ennes Sarradj
Acoustic spacetime is a four-dimensional manifold analogue to the relativistic spacetime with the reference speed of light replaced by the speed of sound. It has been established primarily for the indirect studies of relativistic phenomena by means of th...
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Jianguo Wang, Philip Rubini, Qin Qin and Brian Houston
Passive control devices for combustion instability and combustion noise in gas turbine engines.
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Cheng-Jen Chen, Pei-Kwei Tsay, Shiu-Feng Huang, Po-Hsiang Tsui, Wan-Ting Yu, Tse-Hwa Hsu, Jennifer Tai and Dar-In Tai
Fibrosis-4 (FIB4), transient elastography (TE), and acoustic radiation force impulse (ARFI) are popular modalities to assess liver fibrosis. Their cutoff values for degrees of fibrosis vary between studies. The influence of hepatic steatosis on fibrosis ...
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Fedor V. Shugaev, Dmitri Y. Cherkasov and Oxana A. Solenaya
Acoustic radiation emitted by three-dimensional (3D) vortex rings in air has been investigated on the basis of the unsteady Navier?Stokes equations. Power series expansions of the unknown functions with respect to the initial vorticity which is supposed ...
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Fedor V. Shugaev, Dmitri Y. Cherkasov and Oxana A. Solenaya
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Ahmad Nayan and Tai Yan Kam
A new vibro-acoustic method is presented to analyze the sound radiation behavior of orthotropic panel-form sound radiators using strip-type exciters to exert line loads to the panels for sound radiation. The simple first-order shear deformation theory to...
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Alessandro Zanarini
Spatially dense operative deflection shapes and receptances, acquired in broad frequency bands, increase the detail in the spatial and frequency domains of the responses of parts in actual dynamic loading, manufacturing and mounting conditions. This work...
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Mario Ibrahin Gutierrez, Antonio Ramos, Josefina Gutierrez, Arturo Vera and Lorenzo Leija
Therapeutic focused ultrasound is a technique that can be used with different intensities depending on the application. For instance, low intensities are required in nonthermal therapies, such as drug delivering, gene therapy, etc.; high intensity ultras...
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Nur Syafiqah Jamaluddin, Alper Celik, Kabilan Baskaran, Djamel Rezgui and Mahdi Azarpeyvand
This paper presents an experimental investigation into the effects of turbulence ingestion on the aerodynamic noise characteristics of rotor blades in edgewise flight. A small-scaled, two-bladed rotor was used in the study. The test utilised two turbulen...
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Haydar Aygun
A computational and theoretical investigation of acoustical and vibrational properties of rigid thin fiberglass material was carried out for different boundary conditions. Fiberglass materials could be applied in industries varying from the aircraft and ...
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Zhiwei Zhao, Jinqiu Wu, Xiaofei Qi, Gang Qiao, Wenbo Zhang, Chaofan Zhang and Kang Guo
As low-frequency and broadband acoustic emission capability is beneficial to the detection range and acoustic communication speed of small scale autonomous underwater vehicles (AUV), this type of transducer is required, especially in cases of complex aco...
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