Design and Application of Laser Scanning 3 D Microscopic Image Acquisition Device
The precise observation and collection of microstructure of civil engineering materials are the basis for achieving long-term performance testing and evolution laws predicting of infrastructure.To overcome the problems of environmental shadows,difficulties in achieving accurate 360° three-dimensional(3D)image acquisition,and image distortion in existing image acquisition technologies,a laser scanning 3D microscopic image acquisition device was designed,which included the parts of body box,base,shadowless lamp system,and laser scanner.This experimental device has the advantages of continuous and fast image acquisition,no environmental shadow influence,etc.It can achieve accurate acquisition of 3D images of civil engineering materials such as surface structure,coarse aggregate texture,and asphalt mixture microstructure.The application cases indicate that the main reason for the deterioration of anti-skid performance of asphalt pavement is the polishing of coarse aggregates on the road surface.Based on the microscopic images of asphalt mixtures,accurate feature parameters such as porosity and gradation can be obtained,providing a basis for quality control and performance evaluation.The device has broad application prospects in civil engineering materials teaching and research for related research institutes,and enterprises and institutions.
3D laser scanning3D microscopic image acquisitionmicroscopic structurecivil engineering materials
万方数据
维普
