飞机座舱透明件的破坏,往往是从边缘处开始的裂纹扩展引起的,因此近代的飞机制造工业中常采取使透明件边缘加强和合理的边缘连接设计来减少飞机座舱盖故障和延长透明件的使用寿命。普通有机玻璃对应力集中敏感,抗裂性较差,其零件大多采用柔性连接(俗称软固定)。定向有机玻璃改善了上述性能,并因分子链是沿与板面平行的方向取向,削弱了层 Damage to aircraft cockpit transparent parts is often caused by crack propagation starting from the edges. Therefore, the modern aircraft manufacturing industry often adopts the edge connection design that enhances the edges of transparent parts and reduces the cockpit cover failure and prolong the use of transparent parts life. Ordinary plexiglass sensitive to stress concentration, cracking resistance is poor, most of its parts are flexible connection (commonly known as soft fixed). Oriented Plexiglass improves these properties, and because the molecular chains are oriented in a direction parallel to the board, the layer is weakened