Experimental investigation of thermal contact conductance across GFRP-GFRP joint

摘要

An experimental apparatus was established for measurements of thermal contact conductance of glass fiber reinforced plastic (GFRP) to GFRP interface. The influence of several primary factors on thermal contact conductance was investigated. Thermal contact conductance across GFRP to GFRP joint increases with increasing contact pressure, while decreases with increasing surface roughness. Higher interfacial temperature causes higher thermal contact conductance due to temperature dependency of hardness of test materials. The values of thermal contact conductance across stainless steel/GFRP joint are 1.7 times of the ones for GFRP/GFRP junction under the same experimental conditions. A comparison of experimental data with Mikic and CMY models shows that existing models overestimate experimental values.