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Xiaoguo Zhou, Qingdian Jiang, Yan Wang, Linfeng Chen, Shuqi Wang and Kunpeng Wang
This paper presents the characteristics of the heave motion responses and hydrodynamic forces of a horizontal floating circular cylinder during a wave?current interaction. A two-dimensional numerical model based on the CFD (Computational Fluid Dynamics) ...
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Steven Cooper
The operation of a wind turbine results in a series of pulses where there is a significant instantaneous increase in the amplitude of the pressure signal, dependent upon the wind speed at the turbine blades. The variations in the amplitude of the sound b...
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Hao Li and Mostafa R. A. Nabawy
In this paper, the effects of stroke amplitude and wing planform on the aerodynamics of hovering flapping wings are considered by numerically solving the incompressible Navier?Stokes equations. The wing planform geometry is represented using a beta-funct...
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Jose-María Sierra-Fernández, Sarah Rönnberg, Juan-José González de la Rosa, Math H. J. Bollen and José-Carlos Palomares-Salas
The highly-changing concept of Power Quality (PQ) needs to be continuously reformulated due to the new schemas of the power grid or Smart Grid (SG). In general, the spectral content is characterized by their averaged or extreme values. However, new PQ ev...
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Josué Zandagba, Mahmoud Moussa, Ezéchiel Obada and Abel Afouda
Nokoué Lake is a complex ecosystem, the understanding of which requires control of physical processes that have occurred. For this, the Surface Water Modeling System (SMS) hydrodynamic model was calibrated and validated on the water depth data. The resul...
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Michal Tu?er, Marek Brabec, Helge Balk, Vladislav Dra?tík, Jan Kubecka and Jaroslava Frouzová
Fish body orientation significantly influences the size obtained with hydroacoustic signals, and thus the estimate of fish size and biomass. For this reason, each characteristic of a target?s echo can be advantageous for developing algorithms to refine a...
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Xunqian Xu, Yu Li, Fengyi Kang, Shue Li, Guozhi Wan, Qi Li, Tao Wu and Siwen Wang
The fluid-saturated porous continuous barrier has a better vibration isolation effect than the single-phase solid continuous barrier, and layer-forming saturated soils will have an impact on the vibration isolation effect of the barriers due to their irr...
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Alexandra P. Schneider, Benoit Paoletti, Xavier Ottavy and Christoph Brandstetter
Experimental monitoring of blade vibration in turbomachinery is typically based on blade-mounted strain gauges. Their signals are used to derive vibration amplitudes which are compared to modal scope limits, including a safety factor. According to indust...
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Ji Qian, Peiyun Zhang, Yongqiang Wu, Ruixin Jia and Jipeng Yang
The corrosion of reinforced concrete (RC) is one of the most serious durability problems in civil engineering structures, and the corrosion detection of internal reinforcements is an important basis for structural durability assessment. In this paper, th...
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Nader Vahdati, Aamna Alteneiji, Fook Fah Yap and Oleg Shiryayev
Engine mounts serve three primary purposes: (1) to support the weight of the engine, (2) to lessen the transmitted engine disturbance forces to the vehicle structure/chassis or airplane fuselage, and (3) to limit the engine motion brought on by shock exc...
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Xianqing Liu, Yu Ding, Wenlong Li, Puyang Zhang, Kui Yu, Yutao Feng, Nan Lv and Sheng Luo
In recent years, multi-bucket foundations have been studied and gradually adopted in engineering practices as a novel foundation for offshore wind turbines within a range of water depth of 30 to 50 m. This study investigated the motion characteristics of...
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Aldo Vesnaver and Luca Baradello
Engineers need to know properties of shallow marine sediments to build piers, pipelines and even offshore windfarms. We present a method for estimating the density, P velocity and thickness of these sediments. The traveltime inversion of primary and mult...
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Zili Dai, Xiaofeng Li and Baisen Lan
Submarine landslides are a global geohazard that can displace huge volumes of loose submarine sediment, thereby triggering enormous tsunami waves and causing a serious threat to coastal cities. To investigate the generation of submarine landslide tsunami...
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Yongqing Lai, Wei Li, Ben He, Gen Xiong, Renqiang Xi and Piguang Wang
At present, monopile-supported offshore wind turbines (MOWTs) are widely used in offshore wind farms. The influence of blade flexibility on the dynamic behaviors of MOWTs excited by waves and earthquakes was investigated in this study. Numerical analysis...
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Guo Li, Shuchun Huang, Wanqiu Lu, Junbo Liu, Shuiting Ding, Gong Zhang and Bo Zhen
Probabilistic failure risk analysis of aeroengine life-limited parts is of great significance for flight safety. Current probabilistic failure risk analysis uses equal amplitude load calculations for conservative estimation, avoiding inclusion of the int...
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Dmitry O. Sinitsyn, Alexandra G. Poydasheva, Ilya S. Bakulin, Alfiia H. Zabirova, Dmitry Yu. Lagoda, Natalia A. Suponeva and Michael A. Piradov
Phase-amplitude coupling (PAC) of theta and gamma rhythms of the brain has been observed in animals and humans, with evidence of its involvement in cognitive functions and brain disorders. This motivates finding individual frequencies of maximal theta-ga...
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Francisco Grajales-Saavedra, Alexis Mojica, Carlos Ho, Krysna Samudio, George Mejía, Saddy Li, Larisa Almengor, Roberto Miranda and Melisabel Muñoz
The City of David constitutes one of the most important commercial centers of the Republic of Panama. However, it is located on a coastal plane, close to an area with high seismic activity and has been affected by significant earthquakes (18 July 1934, M...
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Michael Syasko, Pavel Solomenchuk, Igor? Soloviev and Natalia Ampilova
The presented results can be used in devices for measuring the thickness of a non-conductive coating on non-magnetic electrically conductive base metals and non-metals.
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Xiaobin Ding, Junxing Zhao, Yaojun Dong and Mi Zhou
We propose a novel inverse analysis method that utilizes shockwaves to detect the operational condition of tested rock. To achieve this back analysis, an in-depth investigation of the dynamic properties of granite specimens was conducted. The dynamic pro...
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Yuqing Yin, Xuehan Zhang, Rixia Lan, Xiaoyu Sun, Keli Wang and Tianbing Ma
This study proposes a new approach to gait recognition using LoRa signals, taking into account the challenging conditions found in underground coal mines, such as low illumination, high temperature and humidity, high dust concentrations, and limited spac...
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