基于数字图像相关的透明材料厚度测量  

Thickness measurement of transparent material by digital image correlation method

作　　者：代祥俊[1] 云海[1] 蒲琪[1,2] 

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255049 [2]徐州建筑学院,江苏徐州221008

出　　处：《光学技术》2010年第4期525-529,共5页Optical Technique

摘　　要：提出了一种测定透明材料厚度的新方法。该方法是基于透明材料对光的折射特点,利用光斑点面内位移与材料厚度的变化关系,将厚度的测量转化为对面内位移的测量。将此方法与数字图像相关法相结合,实现了单摄像机对厚度的测定。对轴向拉伸状态下的有机玻璃板的厚度变化进行了测定,将实验结果与理论值进行了对比,两者符合较好,证明了该实验方法的有效性和可行性。A new method based on the principle of light refraction is presented,and a system based on a single CCD camera and digital image correlation method is developed. The relationship between the in-plane displacement of speckle and the thickness change of specimen is provided. The thickness of transparent plexiglass plate under axial tensile load is obtained by measuring the y-direction in-plane displacement. The experimental results are well consistent with the theoretical value. The results reveal that the new method is suitable for thickness measurement of transparent material.

关 键 词：厚度 透明材料 数字图像相关 

分 类 号：TN206[电子电信—物理电子学] TN911.72