Transmission of Impact Vibration on Concrete and Mortar Sheets by Carlos Morón, Alfonso García, Daniel Ferrández, Víctor Blanco

“…Thus, this system could be used as a vibration detection system and as an alternative method of standardization of materials against their acoustic characteristics.…”
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Hierarchical band gaps in complex periodic systems by Dunckley, Lucas, Davies, Bryn

“…This theory and its instantaneous utility is demonstrated in a series of vibro-acoustic and mechanical examples.…”
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Distributed Fiberoptic Sensor for Simultaneous Temperature and Strain Monitoring Based on Brillouin Scattering Effect in Polyimide-Coated Fibers by Liwen Sheng, Ligong Li, Leijun Hu, Ming Yuan, Jinpeng Lang, Jianguo Wang, Peng Li, Zongyi Bi, Jisong Yan, Zhiming Liu

“…In the experimental section, the discrimination of strain and temperature is successfully demonstrated by analysing the unequal sensing coefficients of the Brillouin frequency shifts generated by different acoustic modes. The Brillouin frequency shifts of the main two peaks are successfully measured to discriminate the strain and temperature with an accuracy 19.68 με and 1.02°C in 2.5 km sensing range. …”
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The question of the efficiency of the workflow of loop propellers by A. V. Mesropyan, Yu. A. Shabelnik

“…Taking into account that propellers are the most widely used, considered one of the possible promising schemes - a loop-shaped propeller, which makes it possible to significantly improve the hydrodynamic, acoustic, vibration and cavitation characteristics of the propeller. …”
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Ultrasonic Studies of Molecular Interactions in Organic Binary Liquid Mixtures by S. Thirumaran, T. Alli, D. Priya, A. Selvi

“…The experimental data have been used to calculate the acoustical parameters namely adiabatic compressibility (β), free length (Lf), free volume (Vf) and internal pressure (πi). …”
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Poluição sonora: estudo de caso do trânsito de veículos na subprefeitura de Pinheiros – São Paulo by Thiago França Shoegima, Alfredo Pereira de Queiroz Filho

“…This value is above all the limits defined by city´s acoustic map. Analysis of these results indicates at least two basic requirements: the development of systems for monitoring and controlling noise pollution and the review of public policies related to the transport system in the city of São Paulo.…”
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Ultrasonic Testing Analysis of Concrete Structure Based on S Transform by Juncai Xu, Hai Wei

“…Thus, S transform, the time-varying analysis method, was introduced into the ultrasonic testing data processing of the concrete structure. The acoustic wave phase velocity was derived based on the spectrum analysis, and the S transform time-frequency analysis method was established. …”
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Laboratory stand for development of method and system for continuous non-contact non-destructive testing of technical condition of insulation equipment by T. G. Galieva, D. A. Ivanov, M. F. Sadykov, A. V. Golenishchev-Kutuzov

“…The article suggests the use of acoustic and electromagnetic methods for a system of continuous non-contact non-destructive testing of the technical condition of insulation equipment, which will allow monitoring insulation equipment online and predicting its residual life. …”
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Simulation Analysis and Experimental Study of the Automobile Synchronous Belt Drive Noise by Shi Yaochen, Li Zhanguo, Li Shuiqing, Zhao Xilu

“…And based on the dynamic response results,the acoustic boundary element analysis model of the transmission system of the automobile synchronous belt is established by the direct boundary element method,the influence law of meshing excitation frequency on the synchronous belt surface sound pressure and field radiated noise is analyzed. …”
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The acquisition of rhotics in onset clusters in L2 Spanish by Carolina González, Christine Weissglass

“… This study examines the acoustic realization of rhotics in Spanish onset clusters in 10 native speakers and 25 second language learners (L2) with English as their L1. …”
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Feature Extraction of Ship-Radiated Noise Based on Hierarchical Dispersion Entropy by Leilei Xiao

“…The classification and recognition of ship-radiated noise (SRN) is of great significance to the processing of underwater acoustic signals. In order to improve the stability of recognition and more accurately identify SRN, single feature extraction and dual feature extraction based on hierarchical dispersion entropy (HDE) are proposed. …”
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Study on Mechanical Failure and PermeabilityCharacteristicsof Porous Gas-Bearing Coal under Triaxial Stress by Xue-bo Zhang, Wen-yuan Wang, Ming Yang, Hang-hang Cai, Jia-jia Liu, Shuai-shuai Shen

“…To explore the mechanical failure and permeability characteristics of porous gas-bearing coal under triaxial stress, the triaxial compression experiment was carried out for porous and conventional gas-bearing coal samples based on the triaxial creep-seepage experiment system and sound emission signal acquisition system. Acoustic emission testing was carried out at the same time of loading failure. …”
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Exploring the Effect of Asperity Order on Mechanical Character of Joint Specimen from the Perspective of Damage by Zhouhao Yuan, Yicheng Ye, Binyu Luo

“…Based on the damage volume data and the acoustic emission (AE) data, the effect of asperity order to the joint mechanical behaviour was studied. …”
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State Judgement Model of the Coal and Rock Medium and Its Engineering Application by Chuanqi Zhu, Lei Wang, Xiangang Han

“…To evaluate the damaging failure extent of the coal and rock mass and distinguish the state of the coal and rock mass medium, first, the medium state index was defined based on the acoustic wave propagation model. Then, based on the coal mass in the working face 8512 in the Chenjiagou Coal Mine in China, the acoustic character and the mechanical character experiments were conducted. …”
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Automatic System for Detection and Positioning of Impacts in Metals Based on Arduino by Carlos Morón, Daniel Ferrández, Pablo Saiz, Alberto Morón

“…Thus, using standardized construction steel rods B500SD that can be considered homogeneous along entire section, it was possible to detect where the impact is produced, measuring delays of propagation of acoustic wave throughout the material. For that, it was necessary to place the accelerometers at the ends of the structure that enables an automatic and efficient way to determine the moment and the position of the impact. …”
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5σ tension between Planck cosmic microwave background and eBOSS Lyman-alpha forest and constraints on physics beyond ΛCDM by Keir K. Rogers, Vivian Poulin

“…We find that combined Planck cosmic microwave background, baryon acoustic oscillations, and supernovae data analyzed under Λ cold dark matter (ΛCDM) are in 4.9σ tension with the extended Baryon Oscillation Spectroscopic Survey (eBOSS) Lyα forest in inference of the linear matter power spectrum at wave number ∼1hMpc^{−1} and redshift = 3. …”
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UWSP: sleeping algorithms for underwater sensor network by Lu HONG, Feng HONG

“…So, a tree topology based sleeping algorithm for UWSN was proposed, which utilizes the special characteristics of underwater acoustic channel. This algorithm could reduce wakeup frequency, prolong sleeping time and keep the end to end delay from being affected by sleeping time. …”
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Nondestructive Damage Evaluation in Ceramic Matrix Composites for Aerospace Applications by Konstantinos G. Dassios, Evangelos Z. Kordatos, Dimitrios G. Aggelis, Theodore E. Matikas

“…Infrared thermography (IRT) and acoustic emission (AE) are the two major nondestructive methodologies for evaluating damage in ceramic matrix composites (CMCs) for aerospace applications. …”
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Bringing phonological oddities to the fore: The Basque sibilants by Iván Igartua

“…Many studies have been devoted to the articulatory and acoustic properties of sibilants in Standard Basque and several dialectal varieties. …”
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Studies on Water-Polymer Interactions inthe Presence of Aceclofenac at 298.15 K by Siti S. B. Ambomase, Sushree Tripathy, Minaketan Tripathy, Upendra N. Dash

“…The experimental ultrasonic velocities have been used to determine isentropic compressibilities, apparent isentropic molar compressibilities, acoustic impedance, molar compressibility, molar sound velocity, free volume and relative association for the systems with and without aceclofenac. …”
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