Thermographic analysis of the anisotropy in the thermal conductivity of composite materials

Douglas D. Burleigh; William De La Torre

doi:10.1117/12.46444

1 March 1991 Thermographic analysis of the anisotropy in the thermal conductivity of composite materials

Douglas D. Burleigh, William De La Torre

Proceedings Volume 1467, Thermosense XIII; (1991) https://doi.org/10.1117/12.46444
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

Pitch-based graphite fibers, when used as a reinforcement in either polymeric or metal matrix composites, can significantly increase the in- plane thermal conductivity. An opportunity is thus presented by these composite materials to passively manage waste heat in electronics applications. Rule-of-mixtures calculations have predicted the thermal management performance of these composite materials when the fibrous reinforcements are in the form of either woven fabric or tape layups and the reinforcement orientation is either unidirectional or cross-plied. Many factors, however, complicate the prediction, including: fiber-to- matrix interfacial thermal resistance, the interply thermal resistance, and the highly anisotropic fiber thermal conductivity. Verification of the predictions was sought by the use of IR thermography. Heat was applied by a point source to the surface of the composite while the resulting thermal pattern was monitored and recorded thermographically.

Citation Download Citation

Douglas D. Burleigh and William De La Torre "Thermographic analysis of the anisotropy in the thermal conductivity of composite materials", Proc. SPIE 1467, Thermosense XIII, (1 March 1991); https://doi.org/10.1117/12.46444

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