2013 Fiscal Year Final Research Report
A New Approach for Non-Destructive Evaluation of Concrete by Nonlinear Ultrasonic Testing
| Project/Area Number |
24656271
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Civil engineering materials/Construction/Construction management
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| Research Institution | Osaka University |
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Principal Investigator |
KAMADA TOSHIRO 大阪大学, 工学(系)研究科(研究院), 教授 (10224651)
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| Co-Investigator(Kenkyū-buntansha) |
UCHIDA Shinya 立命館大学, 理工学部, 講師 (70543461)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | コンクリート / 非破壊試験 / 非線形超音波法 / 界面 / 水セメント比 / ひずみ / 高調波 |
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| Research Abstract |
In this study, a non-linear ultrasonic testing system for Concrete was produced as a prototype. Flaw detections and materials evaluation in concrete were tried by using the newly proposed measuring system. As a result, higher harmonics were recognized in experiments for concrete specimens with contact interface. On the other hand, pulse wave generated by this testing system was effective to propagate through fresh cement paste specimens. Possibility of the developed system could be confirmed in this trial.
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