Development of the Evaluation of the Thermophysical Properties of Functionally Gradient Materials
| Project/Area Number |
07555389
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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 | 試験 |
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| Research Field |
Thermal engineering
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| Research Institution | Keio University |
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Principal Investigator |
NAGASAKA Yuji Keio University, System Design, Associate Professor, 理工学部, 助教授 (40129573)
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| Co-Investigator(Kenkyū-buntansha) |
BABA Tetsuya National Research Laboratory for Metrology, Head, 計測システム部, 室長
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1996: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Functionally Gradient Materials / Thermophysical Properties / Photoacoustic Method / Thermal Diffusivity / Composite Materials / Thermal Conductivity / Photothermal Radiometry |
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| Research Abstract |
The results obtained from the present research are summarized as follows.
(1) In order to apply the photothermal method to measure the thermal diffusivity of functional gradient materials (FGM), we have extended the RG theory and obtained AC temperature response for layred sample.
(2) From the obtained AC temperature response, we have succeeded to evaluate thermal diffusivity distribution in the case of 2 and 3 layred FGM sample. We have found that by employing appropriate initial values, it is in principle possible to extract the inner thermal diffusivity distribution from phase-lag data.
(3) We have developed a new photoacoustic instrument and confirmed the applicability of the method.
(4) In order to measure the thermal diffusivity distribution of much thicker (-mm) FGM,we have developed a new photothermal instrument.
(5) By using this photothermal apparatus, we have measured the thermal diffusivity distribution of 5 layred Ni/ZrO_2 FGM sample for the first time.
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Report
(3 results)
Research Products
(13 results)
