创新性地在传统的动态热机械分析仪器中引入电阻测量的方法 ,同步、原位、在线、实时地测出了导电性复合材料如碳黑填充热塑性高分子材料或碳纤维增强热固性树脂基复合材料在动态机械载荷下的电阻响应 ,借此首次记录到以上材料在加热与交变机械载荷联合作用下的结构变化信息 ,如导电网络完善和稳定 ,以及树脂基体膨胀、碳纤维微动等 ,这不仅为分析材料的微结构变化提供了新的手段 ,而且为在线检测复合材料在服役状态的结构变化或可能的损伤与失效提供了可能性 Innovatively introduce the resistance measurement method into the traditional dynamic thermomechanical analysis instrument, and simultaneously, in-situ, on-line and real-time detection of the conductive composite materials such as carbon black filled thermoplastic polymer materials or carbon fiber reinforced thermosetting resin matrix composites The resistance response under dynamic mechanical loading, for the first time, records the structural change information of the above materials under the combined action of heating and alternating mechanical loads, such as the improvement and stabilization of the conductive network, as well as the expansion of the resin matrix and the fretting of carbon fibers, which not only Provide new means for analyzing the microstructural changes of the material and provide the possibility of on-line detection of structural changes in the service state or possible damage and failure of the composite material