Optical grid Method for Contouring of 1-D Non-Reflective Surfaces

International Conference on Mechanical, Materials and Renewable Energy

机械制造;材料科学;能源学

Raghuraman, M.^1 ; Mahesh Chakravarthi, V.^1 ; Mummina, Vinod^1

Vishnu Institute of Technology, Andhra Pradesh, Bhimavaram, India^1

关键词: D. digital image correlation (DIC);    Digital image;    Grid methods;    No-load conditions;    Optical grids;    Optical technique;    Reflective surfaces;    Under loads;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012022/pdf
DOI  :  10.1088/1757-899X/377/1/012022

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Digital Image Correlation (DIC) is a non-contact optical technique method, based on grey value digital images, that can determine the contour and the displacement of an object under load. This technique is used to measure deformation, displacement, strain. This work aims at finding the slope and curvature contours of the loaded beams (Theory of bending) using a grid method. The spacing between two grid lines is unaltered under no load condition and spacing changes when it is loaded. Thus, the strain of the grid lines is related to slope and curvature. This method is applied to the practical structures where the surfaces (non-reflective) are made into reective by the use of available coating technique.