1988 Fiscal Year Final Research Report Summary
Measuring Method for Thermal Diffusivity of Thin Layered Composites
| Project/Area Number |
62550149
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | Shizuoka University |
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Principal Investigator |
ARAKI Nobuyuki Faculty of Engineering, Shizuoka University, 工学部, 教授 (90005314)
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| Co-Investigator(Kenkyū-buntansha) |
MAKINO Atsushi Faculty of Engineering, Shizuoka University, 工学部, 助教授 (60165678)
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| Project Period (FY) |
1987 – 1988
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| Keywords | Thermophysical properties / Thermal diffusivity / Thermal conductivity / Layered composite / 薄膜 |
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| Research Abstract |
Although various kinds of layered composites have been used widely, their thermophysical properties, such as thermal conductivities and specific hear capacities, are remained unknown because measuring methods have not been fully established. Due to this poor accunulation of thermophysical properties, cooling method for highly integrated electronic devices has been one of the serious problems. The present study aims to develop measuring methods and to obtain thermophysical properties which are capable for the analyses of heat transfer. Following resuls are obtained.
1. Measuring methods for the thermal diffusiviy have been established from the temperature response at the rear surface of a layered composite whose front surface is heated stepwisely of pulsewisely. These methods can be applied for composites with up to three layers. 2. Program for a personal computer has been made to obtaine thermal diffusivity at experimental site. 3. Problems in measuring thermal diffusivity with the present program has been discussed and applicable ranges of the analytical solutions for layered composites are identified. 4. Effect of the carbon coating layer, which absorps the rediation energy, on the thermal diffusivity has been able to estimate quantitatively. 5. Overall apparant thermal diffusivity of the layered composite, which is regared as a single component material, is correlated with thermal diffusivity of each layer in the composite. Correlations between overall apparent thermal conductivity of each layer are also discussed. 6. Thermal diffusivities of 2-layered and 3-layered composites have been measured based on the stepwise and pulsewise heating methods.
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Research Products
(4 results)
