Articles with "mid frequency" as a keyword



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The development of hybrid ES-FE-SEA method for mid-frequency vibration analysis of complex built-up structure

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Published in 2018 at "Applied Mathematical Modelling"

DOI: 10.1016/j.apm.2018.07.033

Abstract: Abstract The beam-plate structures and its complex composite structures are widely used in practical engineering. Recently, a hybrid FE-SEA method was applied for the vibration analysis of beam-plate structures in mid-frequency regime. However, the accuracy… read more here.

Keywords: built structure; sea; mid frequency; method ... See more keywords
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Numerical investigation of the vibro-acoustic response of functionally graded lightweight square panel at low and mid-frequency regions

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Published in 2020 at "Composite Structures"

DOI: 10.1016/j.compstruct.2020.113460

Abstract: Abstract The focus of this paper is to investigate numerically the vibro-acoustic responses of functionally graded lightweight square panel (FGLSP) made from A l / A l 2 O 3 with various boundary conditions (BCs).… read more here.

Keywords: vibro acoustic; functionally graded; frequency regions; mid frequency ... See more keywords
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SmEdA vibro-acoustic modelling in the mid-frequency range including the effect of dissipative treatments

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Published in 2017 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2017.01.024

Abstract: Vibro-acoustic simulation in the mid-frequency range is of interest for automotive and truck constructors. The dissipative treatments used for noise and vibration control such as viscoelastic patches and acoustic absorbing materials must be taken into… read more here.

Keywords: dissipative treatments; frequency range; mid frequency;
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Nondeterministic wave-based methods for low- and mid-frequency response analysis of acoustic field with limited information

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Published in 2017 at "Mechanical Systems and Signal Processing"

DOI: 10.1016/j.ymssp.2016.06.042

Abstract: Abstract The response of the acoustic field, especially for the mid-frequency response, is very sensitive to uncertainties rising from manufacturing/construction tolerances, aggressive environmental factors and unpredictable excitations. To quantify these uncertainties with limited information effectively,… read more here.

Keywords: low mid; acoustic field; mid frequency; response ... See more keywords
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Low- versus Mid-frequency Raman Spectroscopy for in Situ Analysis of Crystallization in Slurries

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Published in 2022 at "Molecular Pharmaceutics"

DOI: 10.1021/acs.molpharmaceut.2c00126

Abstract: Slurry studies are useful for exhaustive polymorph and solid-state stability screening of drug compounds. Raman spectroscopy is convenient for monitoring crystallization in such slurries, as the measurements can be performed in situ even in aqueous… read more here.

Keywords: mid frequency; spectroscopy; frequency; frequency raman ... See more keywords
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Explanation and prediction for the selective crystallization of boscalid by mid-frequency Raman difference spectra analysis

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Published in 2023 at "CrystEngComm"

DOI: 10.1039/d2ce01679f

Abstract: The selective crystallization behaviours of amorphous boscalid (BOS), BOS monohydrate and acetone/ethyl acetate/ethanol/methanol solutions are explained and predicted by mid-frequency Raman difference spectra analysis. The phase transition processes including solutions... read more here.

Keywords: spectra analysis; mid frequency; raman difference; frequency raman ... See more keywords
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Vector intensity properties from direct and reverberant field from a mid-frequency sonar in shallow water

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Published in 2018 at "Journal of the Acoustical Society of America"

DOI: 10.1121/1.5067497

Abstract: The Intensity Vector Autonomous Recorder (IVAR) is a benthic lander system that coherently measures 3-axis acoustic particle velocity and pressure (combined sensor). Results using IVAR in a mid-frequency propagation and reverberation study conducted near Geoje… read more here.

Keywords: vector; mid frequency; intensity; measurements made ... See more keywords
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Estimating received levels for acoustically tracked whales from Navy mid-frequency active sonar

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Published in 2018 at "Journal of the Acoustical Society of America"

DOI: 10.1121/1.5068266

Abstract: Multi-channel passive acoustic data were collected from bottom-mounted hydrophones off the coast of Kauai, HI at the U.S. Navy Pacific Missile Range Facility’s instrumented range. In February 2017, data were recorded during the Submarine Command… read more here.

Keywords: frequency active; mid frequency; whale; active sonar ... See more keywords
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Evaporative Crystallization of Simvastatin from Different Solutions Using Mid-Frequency Raman Difference Spectra Explanations.

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Published in 2023 at "Applied spectroscopy"

DOI: 10.1177/00037028231166950

Abstract: Amorphous simvastatin (amorphous SIM) and Form I of SIM were prepared separately from SIM acetone (AC)/ethyl acetate (ETAC)/ethanol (ET) solutions by simply controlling the solvent evaporation rate, and the kinetic formation of amorphous SIM from… read more here.

Keywords: raman difference; frequency raman; difference spectra; mid frequency ... See more keywords
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MTF improvement for optical synthetic aperture system via mid-frequency compensation.

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Published in 2021 at "Optics express"

DOI: 10.1364/oe.420512

Abstract: Optical synthetic aperture imaging system has grown out the quest for higher angular resolution in astronomy, which combines the radiation from several small sub-apertures to obtain a resolution equivalent to that of a single filled… read more here.

Keywords: aperture; system; mid frequency; synthetic aperture ... See more keywords
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Active Mitigation Strategy of Structure-Borne Vibration with Complex Frequency Spectra from Asymmetric Plate-like Mounting Systems in Next Generation Mobilities

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Published in 2023 at "Symmetry"

DOI: 10.3390/sym15010178

Abstract: The complicated spectrum produced by electric and hybrid car engines is particularly sensitive to the mid-frequency range. Furthermore, sensor placement in future mobility is crucial because when the positions and orientations of sensors are altered… read more here.

Keywords: active mounting; mid frequency; structure; frequency ... See more keywords