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Christian Lehr, Pascal Munsch, Romuald Skoda and Andreas Brümmer
The acoustic properties of a single-stage centrifugal pump with low specific speed are investigated by means of compressible 3D CFD simulations (URANS) and experiments. In order to determine the pump?s acoustic transmission and excitation characteristics...
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Denis V. Makarov, Pavel S. Petrov and Michael Yu. Uleysky
The problem of sound propagation in a shallow sea with a rough sea bottom is considered. A random matrix approach for studying sound scattering by the water?bottom interface inhomogeneities is developed. This approach is based on the construction of a st...
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Ali Aryo Bawono, Nen NguyenDinh, Janaki Thangaraj, Maximilian Ertsey-Bayer, Christoph Simon, Bernhard Lechner, Stephan Freudenstein and En-Hua Yang
A modified strain-hardening cementitious composite (SHCC) material, fabricated using corundum aggregates (SHCC-Cor), has been proposed for roadway applications as it offers high structural performance and high skid resistance. However, the acoustic perfo...
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Uri Kushnir and Vladimir Frid
Modern studies which dealt with the frequency domain analysis showed that a frequency-domain approach has an essential advantage and mentioned an inner qualitative relationship between the subsurface structure and its frequency spectra. This paper deals ...
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Alexey V. Ermoshkin, Dmitry A. Kosteev, Alexander A. Ponomarenko, Dmitrii D. Razumov and Mikhail B. Salin
Underwater acoustic echosounding for surface roughness parameters retrieval is studied in a frequency band that is relatively new for such purposes. During the described 2-weeks sea experiment, 1?3 kHz tonal pulses were emitted from an oceanographic plat...
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Yi Xu, Manousos Valyrakis, Gordon Gilja, Panagiotis Michalis, Oral Yagci and Lukasz Przyborowski
A few decades ago, river erosion protective approaches were widely implemented, such as straightening the river course, enhancing riverbed/bank stability with layers of concrete or riprap, and increasing channel conveyance capacity (i.e., overwidening). ...
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Feng Hu, Zhiqing Li, Yifan Tian and Ruilin Hu
Construction operations in cold regions may encounter frozen geomaterials. In construction, it is important to understand the processes by which geomaterials fail under common loading conditions to avoid accidents and work efficiently. In this work, an a...
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Wootae Jeong and Dahae Jeong
Results and algorithm proposed in this research can be applicable in developing devices measruing acoustic rail surface irregularities, and various potental surface measuring equipment with a moving platform.
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Angélica Emygdio da Silva Antonetti, Larissa Thais Donalonso Siqueira, Maria Paula de Almeida Gobbo, Alcione Ghedini Brasolotto and Kelly Cristina Alves Silverio
Cepstral peak prominence-smoothed (CPPs) and long-term average spectrum (LTAS) are robust measures that represent the glottal source and source-filter interactions, respectively. Until now, little has been known about how physiological events impact audi...
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Mischa Schönke, Lars Wiesenberg, Inken Schulze, Dennis Wilken, Alexander Darr, Svenja Papenmeier and Peter Feldens
Quantitative acoustic marine habitat mapping needs to consider the impact of macrobenthic organisms on backscatter data. However, the sensitivity of hydroacoustic systems to epibenthic life is poorly constrained. This study explores the impact of a benth...
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