2012 Fiscal Year Final Research Report
Quality evaluation of concrete material by attractor analysis for Coda waves
| Project/Area Number |
23656280
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
OSHIMA Yoshinobu 京都大学, 工学研究科, 准教授 (10362451)
NOMURA Yasutoshi 立命館大学, 理工学部, 助教 (20372667)
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| Project Period (FY) |
2011 – 2012
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| Keywords | コンクリート |
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| Research Abstract |
The elastic waves propagating in concrete material are interfered with each other and reflected by aggregates and then the observed waves become much complicated but must have the information of aggregates or other influential factors. Thus in this study chaotic theory is applied to evaluate the complicity of the waves transmitted throughout concrete material. As a result it is found that prediction error of the received signal has some correlation with the homogeneity of the material, and that correlation dimension and maximum Lyapunov exponent have strong correlation with the bond matrix around the aggregates.
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