Optimization of a three-dimensional digital image correlation system for deformation measurements in extreme environments
Optimization of a three-dimensional digital image correlation system for deformation measurements in extreme environments
复制标题
极端环境下变形测量三维数字图像相关系统的优化
DOI：
10.1364/ao.51.004409
复制
发表时间：
2012-07-01
期刊：
影响因子：
1.9
通讯作者：
Yu, Liping
中科院分区：
文献类型：
--
作者：
Pan, Bing;Wu, Dafang;Yu, Liping
为了在非实验室条件下或极端高温环境下进行精确的形状和三维变形测量，开发了一种优化的三维数字图像相关（3D-DIC）系统。与使用白色或自然光照明的常规3D-DIC系统相比，所提出的主动成像3D-DIC系统基于单色照明和带通滤波器成像的组合。由于在成像透镜之前附接的带通滤波器仅允许主动照明的单色光通过并阻挡其带通范围之外的所有光，因此主动成像3D-DIC系统对非实验室环境中的环境光的严重变化以及极端高温环境中的热物体的热辐射不敏感。进行了两个传统3D-DIC系统无法执行的具有挑战性的实验，以验证所开发的主动成像3D-DIC系统的鲁棒性和准确性。由于相对简单且易于实现的改进可以实现更广泛的应用范围，因此强烈推荐所提出的主动成像3D-DIC系统代替传统的3D-DIC系统用于实际应用。(C)2012美国光学学会
An optimized 3D digital image correlation (3D-DIC) system using active optical imaging is developed for accurate shape and 3D deformation measurements in nonlaboratory conditions or extreme high-temperature environments. In contrast to a conventional 3D-DIC system using white or natural light illumination, the proposed active imaging 3D-DIC system is based on a combination of monochromatic lighting and bandpass filter imaging. Because the bandpass filter attached before the imaging lenses allows only the actively illuminated monochromatic light to pass through and blocks all light outside of its bandpass range, the active imaging 3D-DIC system is therefore insensitive to serious variations in ambient light in nonlaboratory environments and to the thermal radiation of hot objects in extreme high-temperature environments. Two challenging experiments that cannot be performed by a conventional 3D-DIC system were carried out to verify the robustness and accuracy of the developed active imaging 3D-DIC system. Because a much wider application range can be achieved with relatively simple and easy-to-implement improvements, the proposed active imaging 3D-DIC system is highly recommended for practical use instead of the conventional 3D-DIC system. (C) 2012 Optical Society of America