| Project/Area Number |
17560065
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Tokyo Institute of Technology |
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Principal Investigator |
INOUE Hirotsugu Tokyo Inst. Tech., Department of Mechanical and Control Engineering, Associate Professor, 大学院理工学研究科, 助教授 (90193606)
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| Project Period (FY) |
2005 – 2006
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| Project Status |
Completed (Fiscal Year 2006)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | Ultrasonics / Non-destructive Testing / Probe / TOFD Method / Lamb Wave / Rayleigh Wave |
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| Research Abstract |
The aim of this research project was to establish a technique of ultrasonic non-destructive testing by developing and improving a new type ultrasonic probe, that is contact-type line-focus probe. The probe possesses some unique structure and characteristics compared with conventional probes: for example, it can transmit and receive Lamb waves, Rayleigh waves rather easily and, in addition, cylindrically propagating bulk waves. The result of this research project is summarized as follows:
(1)Some prototypes of ultrasonic probe were fabricated and improved. The sensitivity of the probe has been improved considerably by changing the material of piezoelectric transducer from polymer to ceramics and then to composites.
(2)The developed probe can be applied to flaw sizing by TOFD method. It has been shown that the probe can detect smaller flaws than those detected by conventional TOFD probe.
(3)A prototype of SH-wave probe instead of longitudinal wave probe has also been fabricated and its potential usefulness has been demonstrated.
Some parts of the above result have been presented at the 12th Asia-Pacific Conference on Non-Destructive Testing 2006, Auckland, New Zealand Improvement and application of SH-wave probe to crack sizing by TOFD method could be an interesting theme of future study.
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