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Frequency-Domain Full-Waveform Inversion Based on Tunnel Space Seismic Data Article

Mingyu Yu,Fei Cheng,Jiangping Liu,Daicheng Peng,Zhijian Tian

Engineering 2022, Volume 18, Issue 11,   Pages 197-206 doi: 10.1016/j.eng.2021.06.018

Abstract: Thus, we apply a frequency-domain acoustic full-waveform inversion (FWI) method to obtain high-resolutionof the frequency group selection strategy and the tunnel observation system settings regarding the inversionresults and determine the structural imaging and physical property parameter inversion of abnormal geologicalthe influence of the length of the two sides of the observation systems of different tunnels on the inversionWe determined that the inversion results are best when the side length is approximately five times the

Keywords： Tunnel seismic detection     Full-waveform inversion     Frequency select strategy     Observation system    

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The research of inversion algorithm of significant wave height with high resolution based HY-2 waveform

Wang Guizhong,Zhang Jie,Miao Hongli,Li Guoqiang,Wang Xin

Strategic Study of CAE 2014, Volume 16, Issue 6,   Pages 60-64

Abstract: Based on HY-2 altimeter waveform data, we develop an inversion algorithm of SWH with high-resolution.Applied this method to one pass waveform data, the result shows the inversion algorithm is effective.Comparing the SWH derived from 1 s waveform, the SWH derived by this method could be increased by aboutThe SWH derived from HY-2 altimeter 20 Hz waveform is reliable and could be applied for high resolution

Keywords： HY-2     significant wave height     inversion algorithm     high resolution    

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Research of seismic events waveform in deep copper mine

Yang Zhiguo,Yu Runcang,Guo Ran

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 69-72

Abstract: According to the analysis results of a detecting blast and an identified seismic event,the waveform analysis

Keywords： deep mining     rockburst     seismic monitoring     waveform analysis    

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The Waveform Analysis and Engineering Computation of the Rail-beam Straightening Force in the Straightening

Shen Jiuyan

Strategic Study of CAE 2000, Volume 2, Issue 1,   Pages 47-52

Abstract: heavy rail-beam straightening mill 1300 (the first and biggest set in China) and straightening forces waveform

Keywords： roller type straightening mills     straightening forces     straightening forces components     pressure steps     waveform    

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Investigating the raveling test for full-depth reclamation

Robert HILL, Andrew BRAHAM

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2,   Pages 222-226 doi: 10.1007/s11709-017-0423-9

Abstract: Full-Depth Reclamation (FDR) is a sustainable method of building pavement structure compared to more

Keywords： raveling     full depth reclamation    

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Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 1,   Pages 17-32 doi: 10.1007/s11465-013-0364-5

Abstract:

This paper presents the kinematical features of an inversion of the double linked fourbar for morphing

Keywords： morphing wing     structural synthesis     dimensional synthesis     geometrical kinematics    

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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: paper experimentally investigated wire breakage detection in a steel cable by acoustic emission (AE) waveformIn the experiments, the attenuation laws of waveform amplitudes were discussed based on stress wave propagationFinally, based on the waveform attenuation laws and the linear position method, the amplitude and energyof the source were confirmed through the measured waveform to identify the source category.

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

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Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1467-6

Abstract:

• A full scale biofilm process was developed for typical domestic wastewater

Keywords： Full scale     Anammox     Domestic wastewater     Biofilm     Candidatus Brocadia    

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Meshless numerical method based on tensor product

SUN Haitao, WANG Yuanhan, MIAO Yu

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 166-171 doi: 10.1007/s11709-008-0021-y

Abstract: Owing to expanded basis functions selection, some drawbacks in general MLS method, for example repeated inversion

Keywords： mathematical     continuity     inversion     selection     efficient    

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Novel sensing techniques for full-scale testing of civil structures

Kaoshan DAI, Zhenhua HUANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 240-256 doi: 10.1007/s11709-012-0172-8

Abstract: Performing full-scale structural testing is an important methodology for researchers and engineers inFull scale testing helps the researchers understand civil infrastructures’ loading scenarios, behaviorsTo conduct a full-scale structural testing, sensors are used for data acquisitions.and select the most effective sensors, this study reviewed and categorized new sensing techniques for full-scaleThe detailed descriptions of wireless sensors and remote sensing techniques and their on-site full-scale

Keywords： sensing technique     full-scale testing     wireless sensor     remote sensing     LiDAR     laser vibrometer    

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Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1536-1559 doi: 10.1007/s11705-022-2221-8

Abstract: Poly(ether−ether ketone) (PEEK) is a linear aromatic macromolecule, which can form semi-crystalline aggregative status, allowing PEEK materials to have strong environment tolerance and excellent physicochemical properties. PEEK materials have become a promising alternative to fabricate particular membranes used in extreme conditions. In the past few decades, many researches and evolutions have emerged in membrane fabrication with PEEK materials and its applications for treating organic solvents and their mixtures; however, there are little systematic and comprehensive literature to summarize fabrication approaches, compile applications, and elaborate PEEK property-structure relationship. In this review, the main approaches to fabricate PEEK-based membranes are illustrated concretely, including conventional thermal-induced and non-solvent-induced phase separation, and novel chemical-induced crystallization; the representative applications in ultrafiltration, nanofiltration and membrane contactor containing organic solvents are demonstrated systematically. Meanwhile, the mechanism to tune PEEK solubility in solvents, which can be achieved by altering monomers in synthesis processes or changing membrane preparation routes, is deeply analyzed. Moreover, the existing problems and the future prospects are also discussed. This review provides positive guidance for designing and fabricating membranes using PEEK and its derivative materials for task-specific applications in harsh conditions.

Keywords： PEEK     phase inversion     solvent-resistant membrane     nanofiltration     membrane contactor    

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Colocated MIMO radar waveform-design based on two-step optimizations in spatial and spectral domains Article

Yu-xi WANG, Guo-ce HUANG, Wei LI, Jin-liang LI

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 7,   Pages 1021-1032 doi: 10.1631/FITEE.1601726

Abstract: We propose an efficient colocated multiple-input multiple-output radar waveform-design method based onthe proposed method is demonstrated via numerical results and comparisons with other approaches to waveform

Keywords： Multiple-input multiple-output (MIMO) radar     Waveform design     Spectral factorization     Fractional quadratically    

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and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced phase inversion

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Strategic Study of CAE 2014, Volume 16, Issue 12,   Pages 35-45

Abstract:

The non-solvent phase separation (NIPS) is a highly efficient membrane preparation method which was invented in 1960s. Membranes prepared by NIPS method always possess asymmetric structure with a denser top layer and looser support layer which gives the membranes excellent selectivity and permeability. What’s more， the structure of the membranes could be easily controlled By NIPS method. So it has been widely used in research and commercial manufacture of membranes. Poly (vinylidene fluoride) (PVDF) has excellent chemical and mechanical properties and has been widely used. PVDF ultrafiltration (UF) membranes could be easily prepared by NIPS method. Owing to the excellent separation properties， PVDF UF membranes have been widely used in wastewater treatment， pure water production， pretreatment of seawater desalination， etc. The preparation process， the control method of the micro-pores and the application of PVDF UF membranes have gained most attentions and became worldwide research hot area. In this paper， we made a brief introduction about the research progress on the phase separation theory of PVDF UF membranes prepared by NIPS， membrane structure control method and its application， etc.

Keywords： non-solvent induced phase inversion     polyvinylidene fluoride     ultrafiltration membrane     phase separation    

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Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing

LIU Wenjun, DU Zhipeng, JIN Junwei

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 270-275 doi: 10.1007/s11783-007-0045-x

Abstract: factors impacting the plug flow pattern of a clearwell were investigated by integrating pilot-scale, full-scaleIt was found that pilot tracer testing, full-scale tracer testing and CFD simulation all demonstrated
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Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Frontiers of Structural and Civil Engineering   Pages 1033-1046 doi: 10.1007/s11709-023-0973-y

Abstract: A full-scale test was conducted to investigate deformation and failure characteristics.

Keywords： shield tunnel     bearing capacity     failure mechanism     segment reinforcement    

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Title Author Date Type Operation

Frequency-Domain Full-Waveform Inversion Based on Tunnel Space Seismic Data

Mingyu Yu,Fei Cheng,Jiangping Liu,Daicheng Peng,Zhijian Tian

Journal Article

The research of inversion algorithm of significant wave height with high resolution based HY-2 waveform

Wang Guizhong,Zhang Jie,Miao Hongli,Li Guoqiang,Wang Xin

Journal Article

Research of seismic events waveform in deep copper mine

Yang Zhiguo,Yu Runcang,Guo Ran

Journal Article

The Waveform Analysis and Engineering Computation of the Rail-beam Straightening Force in the Straightening

Shen Jiuyan

Journal Article

Investigating the raveling test for full-depth reclamation

Robert HILL, Andrew BRAHAM

Journal Article

Kinematical synthesis of an inversion of the double linked fourbar for morphing wing applications

J. AGUIRREBEITIA, R. AVILéS, I. FERNáNDEZ, M. ABASOLO

Journal Article

Experimental study on wire breakage detection by acoustic emission

Limin SUN, Ji QIAN

Journal Article

Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment

Journal Article

Meshless numerical method based on tensor product

SUN Haitao, WANG Yuanhan, MIAO Yu

Journal Article

Novel sensing techniques for full-scale testing of civil structures

Kaoshan DAI, Zhenhua HUANG

Journal Article

Solvent-resistant porous membranes using poly(ether−ether ketone): preparation and application

Journal Article

Colocated MIMO radar waveform-design based on two-step optimizations in spatial and spectral domains

Yu-xi WANG, Guo-ce HUANG, Wei LI, Jin-liang LI

Journal Article

and application of polyvinylidene fluoride ultrafiltration membranes by non-solovent induced phase inversion

Lv Xiaolong,Wu Chunrui,Zhang Hao,Zhao Lihua

Journal Article

Optimizing the configuration of a clearwell by integrating pilot and full-scale tracer testing

LIU Wenjun, DU Zhipeng, JIN Junwei

Journal Article

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Journal Article