Role of Specimen Geometry in the Effect of Fiber Orientation on the Thermal Conductivity of a Uniaxial Carbon-Fiber-Reinforced Aluminoborosilicate Glass-Matrix Composite |
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| Authors: | Hemanshu Bhatt Kimberly Y Donaldson D P H Hasselman Kenneth Chyung Mark P Taylor |
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| Affiliation: | Thermophysical Research Laboratory, Department of Materials Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061;Research and Development, Corning Glass Works, Corning, New York 14830 |
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| Abstract: | A study concerning the effect of fiber orientation on the thermal conductivity of a uniaxial carbon-fiber-reinforced borosilicate glass was conducted. For thin specimens, and thick specimens with specimen sides cut parallel to the fiber direction, the dependence of thermal conductivity on fiber orientation showed excellent agreement with theoretical behavior predicted for a composite infinite in extent. In contrast, the thermal conductivity data for rectangular thick specimens fell well below the data for the thin and angled specimens. For fiber orientation of 45° and higher, at which the heat was directed toward the side of the specimen rather than across, the thermal conductivity values showed excellent agreement with theoretical behavior predicted for a finite composite strip with insulated sides. |
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| Keywords: | glass fiber reinforcement thermal conductivity orientation size |
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