2016 Fiscal Year Final Research Report
Study of nondestructive inspection system for a hightemperature and radiation structure using a long waveguide
| Project/Area Number |
26420032
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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 |
Materials/Mechanics of materials
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| Research Institution | Fukuoka Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 非破壊検査 / ガイド波 / 高温 / 構造物 / 導波体 / 電磁超音波センサ |
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| Outline of Final Research Achievements |
Nondestructive inspection of a high temperature structure is required to guarantee its safety. However, there are not any useful sensors for a high-temperature structure. Some of them can’t work at high temperature over 50℃. Another one is too expensive to use it. Therefore, the sensing system which can transmit and receive an ultrasonic wave traveling long distance by using a long waveguide has been studied. It means that an ultrasonic sensor could be driven at atmospheric temperature. We could finally confirm that a guided ultrasonic wave generated by a trial electromagnetic acoustic transducer (EMAT) with Ni-thin sheet on the surface of the pipe can travel more than 10m using a thin bar with a 2mm - diameter as a wave guide. Next, we tried to transmit and receive a guided wave into a pipe using the developed system. It is indicated that a special shaped waveguide on the pipe is useful.
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| Free Research Field |
非破壊評価
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