飞机座舱盖玻璃成型残余应力测定—双折射主切片图解法

DETERMINATION OF RESIDUAL STRESS CAUSED BY FORMING IN TRANSPARENT AIRPLANE CANOPIES——A GRAPHIC METHOD BY MEANS OF THE BIREFRINGENCE IN THE FIRST SLICE

本文基于叠加原理和残余应力的自平衡特性,建立了一种将有机玻璃热应力条纹与冻结应力条纹进行定量分离的图解法。根据热应力条纹,应用作者早期的工作,可计算出飞机座舱盖玻璃成型残余应力。该方法己获得工程应用。

A graphic method based on principle of superposition and self-equilibrium of residual stress is used for cliscriminating the thermal stress fringe quantitatively from the frozen stress fringe in PMMA. The residual stress caused by forming can be calculated from the thermal stress fringe in transparent airplane canopi es according to the earlier work of the author. The method has been applied in engineering.