2013 Fiscal Year Final Research Report
Nondestructive evaluation of a defect in a large scale structure by acoustic signal
| Project/Area Number |
23560493
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | Iwate University |
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Principal Investigator |
ABE Masato 岩手大学, 工学部, 教授 (00159443)
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| Co-Investigator(Renkei-kenkyūsha) |
SATO Masahiro 富山大学, 大学院理工学研究科, 教授 (90132563)
NAGATA Yoshifumi 岩手大学, 工学部, 准教授 (40301030)
FUJIOKA Toyota 岩手大学, 工学部, 助教 (60292174)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 信号処理 / 複数センサ / 非破壊診断 / 遺伝的アルゴリズム / FDTD法 |
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| Research Abstract |
The developed method estimates the propagation delays of reflection from boundaries of a structure or a defect, from which the location of the defect can be estimated.
We have also proposed the use of FDTD method for investigating the propagation delays by computer simulation, and found that the simulated results coincide well with the measured results. Furthermore, by modifying the GA algorithm, the computation time was reduced to about 1/30.
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Research Products
(6 results)
