激光偏振散射法测量钢化玻璃应力的分析

Analysis of Stress Measurement of Toughened Glass by Laser Polarization Scattered-light Method

介绍了表面应力及内部应力分布对钢化玻璃各项性能的影响,给出了激光偏振散射法的详细理论推导,结合计算机数字图像处理技术,该方法可方便快捷地获得钢化玻璃表面应力与板厚方向的应力分布,是一种比较理想的钢化玻璃应力测量方法,利用四点弯曲试验对激光偏振散射法的准确性进行核验,结果表明该方法可以满足测试要求。

The influence of surface stress and internal stress distribution on the properties of toughened glass is introduced.And the theoretical derivation of laser polarization scattering method is given.Combined with computer digital image processing technology,this method can obtain the surface stress and the stress distribution in the direction of plate thickness of toughened glass easily and quickly.It is an ideal method for stress measurement of toughened glass.The accuracy of laser polarization scattering method is verified by fourpoint bending test.The results show that the method can meet the test requirements.