光弹性定向载波研究

Research on Oriented Carrier-Wave Photo-Elasticity

研究了光弹性定向载波的基本原理和光强度分布,分析了由此产生载波条纹的分布规律.将光弹性定向载波器置入传统光弹性仪器中的适当位置,转动光弹性定向载波器得到包含测量主应力方向的条纹图,最终通过对光弹性条纹图像处理获得等差线级次和主应力方向,以此提高光弹性实验的精度和速度,为拓宽光测力学的工程应用创造条件.

This paper presents a study of oriented carrier-wave in photo-elasticity mechanics and the distributing of luminous intensity. At the same time the distributing rule of stripe of oriented carrierwave of photo-elasticity has also been analyzed, presenting a new method of photo-elasticity with oriented carrier-wave for testing direction of principal stress. According to this method, an apparatus of oriented carrier-wave of photo-elasticity was designed and fabricated and, then put into traditional photo-elastic equipment, so the stress trajectories map was obtained including the direction of principal stress, The number of photo-elastic stress patters and stress trajectories was obtained with image processing methods and the precision of photo-elasticity method was improved a lot,paving a way for the application of optical engineering in the photo-elasticity mechanics field.