2012 Fiscal Year Final Research Report
Development of THz electromagnetic wave tomography and its application for evaluation of material deterioration
| Project/Area Number |
22656032
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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 |
Materials/Mechanics of materials
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| Research Institution | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KUBO Shiro 大阪大学, 工学研究科, 教授 (20107139)
HANGYO Masanori 大阪大学, レーザーエネルギー学研究センター, 教授 (10144429)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 非破壊評価 / テラヘルツ電磁波 / テラヘルツ時間領域分光法 / 被膜材料 |
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| Research Abstract |
In this study, a new nondestructive evaluation technique for evaluating deterioration of materials was developed utilizing transmission property of THz wave. Experimental studies were carried out for evaluating THz wave transmittance for iron (III) oxide (Fe_2O_3) and iron (II) iron (III) oxide (Fe_3O_4), followed by THz imaging of them for paint coated steel plate using terahertz time-domain spectroscopy (THz-TDS) system. Time-domain THz reflection measurement data were utilized for 3-D imaging of the corrosive materials under coating. Frequency-domain THz reflection data were utilized successfully for separate identification of iron (III) oxide and iron (II) iron (III) oxide under coating based on their spectrum absorption. Feasibility of the nondestructive evaluation technique based on THz-TDS was demonstrated by the present study.
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