A set of visual measurement platform for the elastic modulus of gold wire is designed. A set of interference facula measure device is designed base on that principle of measuring the optical path difference by using the interference method,and the micro deformation of the metal material in the stretching proces is accurately measured.The machine vision method is introduced to realize the visual measurement of the sectional area of metal materials.The built transmission structure can continuously and stably apply the pulling force.The graphical operation interface developed for the platform makes the measurement process visualized,and the tensile change is verified by observing the displacement of material surface topography characteristics. The platform improves the experimental measurement accuracy,and the relative error of measurement results is 3.3％.The measurement platform can be used as a comprehensive experimental instrument in college physics experiment teaching.
维普
万方数据