カーボン/ポリイミド複合材料圧縮強度の温度依存性を表す実験式

抄録

T 800 H/PMR-15 carbon/polyimide composite has good specific intensity and specific rigidity in high-temperature region to about 300°C. This material is an advanced structural composite to be applied to the elevons and other secondary structures of the unmanned space reentry vehicle HOPE-X. The authors have carried out the basic strength evaluation tests on this material. Especially, the compressive strength data is important for the structural design using composite material. Therefore, the compressive strength data was collected in various testing conditions (test temperature, stacking sequences, specimen configuration, moisture absorption condition) in order to examine the tendency in strength degradation by the temperature range from −50°C to 300°C. Empirical formula (approximate equation) which showed the relationship between test temperature and compressive strength was deduced from these test result. It is possible to simply show the relationship between test temperature (T) and compressive strength (S) according to the approximate equation of using three coefficient.