Abstract: A novel method for contour-mapping principal stress distributions is described. In the polarimeter developed, a reference beam of light consists of the two orthogonal linearly polarized components that interfere with their counterpart orthogonal components of an elliptically polarized signal beam of light. Two crossed interference patterns are formed over a MOS TV camera so that the significant parameters for determining a principal stress distribution can be recorded in a computer. The major advantage is that not only each of the two principal stresses but also the principal stress- difference can be independently determined, and no use of any optical component for polarization alignment makes it possible to follow a rapid change in stress distribution within the maximum frame rate 2066 s$+$MIN@1$/ of the MOS TV camera. !5
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机译：摘要：描述了一种轮廓映射主应力分布的新方法。在开发的偏振计中，参考光束由两个正交的线性偏振分量组成，这两个分量会干扰其椭圆偏振信号光束的对应正交分量。在MOS电视摄像机上形成了两个交叉的干涉图样，因此可以将确定主应力分布的重要参数记录在计算机中。主要优点是，不仅可以独立确定两个主应力中的每一个，而且主应力差也可以独立确定，并且不使用任何光学组件进行偏振对准就可以在最大框架内跟踪应力分布的快速变化。 MOS电视摄像机的费率为2066 s $ + $ MIN @ 1 $ /。 ！5
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