Mesh-independent ray-trace algorithm for concrete structure

•The relay points improve the accuracy of the estimation of ray-path.•The relay points are almost uniformly distributed if the size and the shape of individual cells are roughly uniform.•Although the travel time is not changed drastically, the route of the ray-path is varied by the relay points.•The...

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Bibliographic Details
Published inConstruction & building materials Vol. 48; pp. 1309 - 1317
Main Author Kobayashi, Y.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.11.2013
Elsevier B.V
Subjects
Algorithms
Analysis
Concrete
Elastic wave tomography
Finite element mesh
Finite element method
Properties
Ray-trace technique
Relay point
Wave propagation
Japan
Ray-trace technique
Elastic wave tomography
Finite element mesh
Relay point
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Summary:•The relay points improve the accuracy of the estimation of ray-path.•The relay points are almost uniformly distributed if the size and the shape of individual cells are roughly uniform.•Although the travel time is not changed drastically, the route of the ray-path is varied by the relay points.•The variety of the ray-path is increased by the relay points. A new ray-trace algorithm, that is used for calculation of the theoretical travel time, is introduced for wave velocity tomography, and it is evaluated by numerical investigations in this paper. Relay points are installed for reducing the mesh dependency of results of the ray-trace that causes inaccurate estimation of the ray-path in the presented algorithm. The relay points are intended to be installed on the mesh uniformly for uniform distribution of the ray-path on the cross section. The comparison of the results from the new and conventional algorithm showed improvement in the ray-path representation of the presented algorithm.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2013.07.003