利用线阵CCD非接触测量材料变形量的方法

用线阵CCD 作为光电传感器非接触测量材料拉伸过程中的变形量，不但比常规的引伸计
测量的方法更客观，而且可以测量材料拉伸变形到断裂的全过程。该方法能在X 和Y 两个方向上同时测量材料变形量，可以获得材料在实验的全过程中两个方向的"应力－应变"关系曲线。采用CCD 拼接技术，测量精度可达到1mm，测量范围80mm。
关键词：非接触测量；线阵CCD；应力测量；变形测量
Abstract: Measurement of the deformation quantity of a material during stretching process by using linear CCD detectors in non-contact mode, not only is more objective than the common extensometer measurement method, but also can measure the whole process from stretching deformation to breaking .The deformation quantity of a material can be simultaneously measured at both direction of X and Y and the stress-strain curves of the both direction during the whole experimental process of a material can be obtained. With CCD splicing technique, the measuring accuracy can be reached 1mm and measuring range 80mm.
Key words: Non-contact measurement；Liner CCD；Stress measurement；Deformation measurement