Results 61 to 70 of about 10,903 (164)
SensorsA new piezoelectric sensor with a triangular shear structure was designed to conduct the deformation monitoring of geotechnical bodies in mining airspace.
Yannan Shi, Jikun Dai
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Measurement of frequency-dependent dynamic properties of soils using the resonant column device
, 2008 Dynamic properties of soils are commonly evaluated at resonance; thus, their variation with frequency is difficult to measure. A nonresonance (NR) method has been recently used for testing soils at low frequencies and strain levels below the linear ...
LAI, CARLO GIOVANNI +3 more
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Small-strain stiffness of liquefiable sands: A comparison between bender elements and resonant-column tests [PDF]
E3S Web of ConferencesSoil stiffness can be estimated by geophysical and dynamic testing methods. In the laboratory, the most common methods to measure the small-strain stiffness are the bender elements (BE) and resonant-column (RC) tests. This paper focuses on the comparison
Molina-Gomez Fausto +3 more
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IEEE Photonics Journal, 2019 Magnetic resonators based on metamaterials are valuable for numerous applications including perfect absorber, sensing and medical imaging. However, due to the existence of the difficulty in magnetic excitation in planar metasurface, the study of magnetic
Wei Wang +6 more
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Applications of the New Approach to Resonant Column Testing
, 2015 For more than 50 years, the resonant column test has been used to measure the shear modulus and damping of soils for shear strains ranging from 10 5 % to 0.5 %.
Drnevich, Vincent P. +3 more
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Plasma Micro-Cavity of Terahertz Wave During Laser Filamentation
IEEE Photonics Journal, 2019 In this work, we focused on the resonant cavity effect of the air plasma, formed during femtosecond laser filamentation, on the near- and far-field profiles of the generated terahertz (THz) radiation.
Chang Liu +5 more
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A Parallel Comparison of Small-Strain Shear Modulus in Bender Element and Resonant Column Tests
, 2018 This paper presents an experimental study on small strain shear modulus (G0) of saturated sand specimens using both resonant column and bender element tests, with the aim to explore the impact of testing method.
Liu, X, Xin Liu, Yang, J, Jun Yang
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Astronomy & AstrophysicsRecent JWST observations of massive galaxies at z > 2 detect blueshifted absorption in Na I D and other resonant absorption lines, indicative of strong gas outflows in the neutral phase.
Moretti Lorenzo +7 more
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Dynamic properties of fine liquefiable sand and calcareous sand from resonant column testing [PDF]
, 2015 textThe study of the dynamic properties of two specific kinds of granular soils is performed using torsional resonant column testing. The sandy soils are: (1) liquefiable sand from Christchurch, New Zealand, and (2) calcareous sand from Puerto Rico.
Wang, Yaning, Ph. D.
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Resonant Scattering of the He i 1.0833 μm Triplet in H ii Regions: Emission Spectra
The Astrophysical JournalResonant scattering of He i 1.0833 μ m triplet photons by metastable He 2 ^3 S _1 is studied for optical depths characteristic of H ii regions. Regions with large He 2 ^3 S _1 column densities are predicted to have unusually broad multipeaked 1.0833 μ m ...
B. T. Draine
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