Abstract
This paper describes the evaluation of heating and cooling characteristics of the active laminate having hollow channels. It was made by hot-pressing of an aluminum plate as a high CTE material, a unidirectional CFRP prepreg as a low CTE material and an electric resistance heater, a unidirectional GFRP prepreg as an insulator between them and copper foils as electrodes. The hollow channels were formed in the GFRP layer. Firstly, the effects of formation of the hollow channels on the time for air cooling and forced cooling, that is, air-flow cooling and water-flow cooling, were investigated. The cooling rate of the active laminate having one hollow channel was improved with increasing its volume fraction up to 0.9, and it was greatly improved by water-flow cooling. Secondly, the effect of the hollow channels on the time constant for heating was examined, and it was clarified that the time constant is not significantly affected by them.
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