Specific evaluation of tunnel lining multi-defects by all-refined GPR simulation method using hybrid algorithm of FETD and FDTD
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Release time:2019-11-22
Impact Factor:4.046
DOI number:10.1016/j.conbuildmat.2018.07.039
Affiliation of Author(s):School of Geosciences and Info-Physics, Central South University, Changsha 410083, China
Teaching and Research Group:Applied Geophysics
Journal:Construction and Building Materials
Place of Publication:ENGLAND
Funded by:41704128,41774132,41574116,2018M632992,CX2017B052,2016152
Key Words:Tunnel lining multi-defects,Specific evaluation,GPR,Hybrid algorithm,Spectral analysis
Abstract:Irregular and complicated tunnel lining defects cannot be finely depicted with the standard finite difference simulation method based on regular mesh due to its irregular geometrical characteristics and complex physical properties of various defects. To solve this problem, a new hybrid algorithm is proposed for all-refined ground penetrating radar (GPR) simulation by combining the finite element time domain (FETD) and finite difference time domain (FDTD), which employs FETD algorithm in main region based on unstructured Delaunay mesh and Newmark-b implicit FDTD algorithm in PML region...
Co-author:王珣, 张彬
First Author:冯德山
Indexed by:Applied Research
Document Code:DOI:10.1016/j.conbuildmat.2018.07.039
Discipline:地质资源与地质工程
Document Type:J
Volume:185
Page Number:220-229
ISSN No.:0950-0618
Translation or Not:no
Date of Publication:2018-10-01
Included Journals:SCI
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