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Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4, Pages 503-509 doi: 10.1007/s11709-011-0132-8

Abstract: In the experiments, the attenuation laws of waveform amplitudes were discussed based on stress wave propagationThen the wave velocity was calculated based on the reach time of the stress wave from each sensor.Finally, based on the waveform attenuation laws and the linear position method, the amplitude and energyspectrum, and the amplitude attenuation factor varied with the stress wave frequency; high frequencywaves had a greater attenuation factor.

Keywords： acoustic emission (AE) waveform wire breakage attenuation factor wave velocity

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Micro-seismic signal propagation of low attenuation

Xiao Jian,Sun Shuting,Liu Jianzhong

Strategic Study of CAE 2014, Volume 16, Issue 8, Pages 83-87

Abstract: text-align: justify;">This article explored the possibility of spread of weak seismic signals and low attenuationpropagation medium showed a degree of elasticity，the vibration signal amplitude，just below the elastic limit attenuationis very small，showing low attenuation characteristics.

Keywords： micro-seismic low attenuation inelastic attenuation

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Application of gamma-ray attenuation technology in density measurement of a slurry reactor

Jian XU, Weisheng WEI, Kai ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 486-490 doi: 10.1007/s11705-010-0509-6

Abstract: density profile of the gas-liquid-solid mixture in a slurry bubble column was measured by gamma-ray attenuationSeveral measures for improving measurement precision were presented based on the discussion on attenuationcolumn decreases with the increase of column height, which indicates that the measurement by gamma-ray attenuation

Keywords： slurry reactor axial density distribution gamma-ray attenuation technology

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microbial reductive dehalogenation with persulfate activation and oxidation (Bio-RD-PAO) for complete attenuation

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1457-8

Abstract:

•Bio-RD-PAO can effectively and extensively remove organohalides.

Keywords： Bio-RD-PAO Microbial reductive dehalogenation Persulfate Organohalide respiration Complete attenuation

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Attenuation mechanism of

Yuanqiang ZHENG,Yanchun SHI,Chang AN,Ruisheng LI,Dongjun LIU,Yuehua KE,Kairong MAO,Mingjuan YANG,Zeliang CHEN,Shorgan BOU

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 4, Pages 331-340 doi: 10.15302/J-FASE-2014032

Abstract: The attenuation mechanism of these strains remains largely unknown.These data indicate that changes in some cog categories and virulence genes might result in the attenuationThese attenuation mechanisms also have implications for screening and development of new vaccine strains

Keywords： Brucella live attenuated vaccine attenuation differential diagnosis

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Numerical Modeling of Water Waves Interaction With Soft Mud Beds: Based on an Empirical Rheology Model Featured by Hysteresis Loop

Qi Peng,Hou Yijun

Strategic Study of CAE 2006, Volume 8, Issue 4, Pages 39-45

Abstract: neighborhood of both sides of the interface, thus contributes to reproducing the characteristics of wavecalculated and the measured bed mud mass transport velocities as well as the rate of decay of surface wave

Keywords： mud mass transport wave attenuation soft mud bed rheological model

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evaluation of extinguishing concentration of superfine ammonium phosphate extinguishing agent by laser attenuation

Yin Zhiping,Liu Aihua,Pan Renming

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 90-95

Abstract: different particle sizes had been done by means of filtering and weighing method combined with laser attenuationThe fitting curves of particle concentration with laser attenuation rate and the extinguishing concentrationThe laser attenuation measurement relative errors were less when the former agent was used in experiment

Keywords： laser attenuation measurement filtering and weighing method superfine particle extinguishing agent

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Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1, Pages 83-87 doi: 10.1007/s11705-009-0075-y

Abstract: As a novel generation of a rotational gas wave machine, the wave rotor refrigerator (WRR) is an unsteadyA basic limitation on main structural parameters and operating parameters is deduced and the wave diagramIn the DUT Gas Wave Refrigeration Studying and Development Center (GWRSDC) lab, the isentropic efficiency

Keywords： wave rotor refrigeration unsteady flow theory wave diagram

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1, Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic

Keywords： horizontal stress index shear wave velocity flat dilatometer test cone penetration test

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Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3, Pages 326-331 doi: 10.1007/s11465-009-0045-6

Abstract: A number of different numerical computational techniques have been developed for wave propagation studiesin complex media (LISA/SIM theory), has been effectively applied to numerical simulations of elastic waveThe finite difference equations describing wave propagation used in the LISA/SIM theory are obtained.

Keywords： Lamb wave modeling LISA/SIM theory finite difference equation finite element

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A simple multi-wave algorithm for the uncapacitated facility location problem

Fred GLOVER, Saïd HANAFI, Oualid GUEMRI, Igor CREVITS

Frontiers of Engineering Management 2018, Volume 5, Issue 4, Pages 451-465 doi: 10.15302/J-FEM-2018038

Abstract:

The multi-wave algorithm (Glover, 2016) integrates tabu search and strategic oscillation utilizingWe propose a simple multi-wave algorithm for solving the Uncapacitated Facility Location Problem (UFLP

Keywords： discrete optimization UFLP multi-wave optimization strategic oscillation tabu search

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: study is carried out to sensitize some effective parameters, including frequency content and incident wave

Keywords： box-lined tunnel half-plane BEM surface response SH-wave time-domain

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A simple method for evaluating liquefaction potential from shear wave velocity

Lianyang ZHANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2, Pages 178-195 doi: 10.1007/s11709-010-0023-4

Abstract: The simplified procedure using shear wave velocity measurements is increasingly used to evaluate theThis paper develops a simple method for evaluating the liquefaction potential of soils from shear wavefactors considered are the earthquake magnitude, the vertical effective overburden stress, the shear waveThe most important factor has been identified as the shear wave velocity.Neither stress-correction of shear wave velocity nor calculation of cyclic shear stress as in the simplified

Keywords： liquefaction earthquake simple method shear wave velocity case history introduction

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Wave Interaction with a Partial Porous Double-Wall Cylinder

Teng Bin,Li Yucheng,Sun Lu

Strategic Study of CAE 2001, Volume 3, Issue 10, Pages 41-47

Abstract:

A linear analytic solution is derived for wave interaetion with a combined cylinder with a solid interiorNumerical experiments have been carried out to examine the wave force and wave run-up on combined porousrun-up and wave loads on cylinders.Cylinders with whole porous section on the outer column are more suitable for reducing wave loads andwave run-up on cylinders.

Keywords： wave diffraction wave force wave run-up porous structure cylinder

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Analytical solution for SH wave propagating through a graded plate of metamaterial

Jinfeng ZHAO, Yongdong PAN, Zheng ZHONG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 301-307 doi: 10.1007/s11465-011-0238-7

Abstract:

A physical model for the shear horizontal (SH) wave propagating from left-handed material (LHM) throughAfter the comparison of the basic wave equations of the electromagnetic, longitudinal, and SH waves,The shift along with the anti-symmetric profile may provide a way to monitor the wave behavior of the

Keywords： left-handed material (LHM) metamaterial shear horizontal (SH) wave