2009 Fiscal Year Final Research Report
Research on highly accurate structural health monitoring based on the Lamb wave propagation analysis for composites structures
| Project/Area Number |
19360045
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | Tohoku University |
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Principal Investigator |
HU Ning Tohoku University, 大学院・工学研究科, 教授 (60250685)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUNAGA Hisao 東北大学, 大学院・工学研究科, 教授 (50134664)
OKABE Tomonaga 東北大学, 大学院・工学研究科, 准教授 (50344164)
KAMEYAMA Masaki 東北大学, 大学院・工学研究科, 助教 (30302178)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 損傷力学 / ヘルスモニタリング / ラム波 / 逆問題解析 / 波伝播解析 |
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| Research Abstract |
In this research, for smart metallic and composite structures with sensor and actuator network in operating aircrafts and high speed vehicles, a highly accurate numerical simulation method of Lamb wave propagation and a signal processing method have been developed. Based on detailed investigations of interactions between Lamb wave and various damages, the mechanism of reflected and transmitted waves, and the characteristics of these reflected and transmitted waves have been studied. Then, the identification accuracy and reliability of damage location in metallic and composite structures has been improved, moreover, quantitative evaluation methods of damage size have been built up.
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