The technology and means of macro and micro inspection,fracture and mark analysis,were investigated in order to find out the cause of airproof rubber bar fracture and emersion in airplane.

• 运用宏观检查、微观分析及断口分析、痕迹分析等分析技术和手段,并结合与拉伸断口的对比分析:对造成飞机货舱门密封胶条断裂脱出的失效性质、原因和机理进行了研究。