聚合物应力光学系数的测试方法  

METHOD OF MEASURING STRESS-OPTICAL COEFFICIENT OF POLYMERS

作　　者：李曦[1] 陈宇宏[2] 詹茂盛[1] 

机构地区：[1]北京航空航天大学,北京100191 [2]北京航空材料研究院,北京100095

出　　处：《工程塑料应用》2009年第10期53-55,共3页Engineering Plastics Application

基　　金：国家高技术研究发展计划项目(863计划项目)(2007AA03Z534)

摘　　要：根据经典平面光弹性理论,对聚合物圆片试样进行径向加载,通过推导加载方向主应力的差值与条纹级数的关系,求出聚合物的应力光学系数,从而提出了一种实用的测试聚合物应力光学系数的方法。使用该方法对聚碳酸酯的应力光学系数进行测量,所获得的实测值与理论值能够很好地吻合,准确度达到99%以上。A new method on stress-optical coefficient measurement was introduced. The method was based on classic plane- photoelasticity theory. By loading on polymer disc samples, the stress-optical coefficients could be obtained according to the relation- ship between the isochromatic fringe values and the stresses. The stress-optical coefficients of PC were tested by this method, and the results matched well with the theoretical coefficients,its accuracy could reach up to 99%.

关 键 词：平面光弹性理论 等差条纹级数 应力光学系数 

分 类 号：TQ171.734[化学工程—玻璃工业] TB301[化学工程—硅酸盐工业]