Tracking and Analysis of Aluminum Foam Deformations in SHPB Experiment by Using High-speed Camera
应用高速摄影机对泡沫铝在SHPB实验过程的变形跟踪与分析

Dynamic stress-strain relation of material can be easily obtained by using SHPB system, but the dynamic deformation characteristics of material, which are just important aspect of metal foam's mechanical properties, can not be directly revealed by SHPB method. Therefore, a SHPB- high-speed camera system was designed to track the dynamic deformation of aluminum foam specimen in SHPB experiment, and the deformation information contained in images was derived and analyzed by using image processing software. Furthermore, the displacement-time curve was obtained, and the deformation was also obtained from the post-process of SHPB. Then, above -mentioned two kinds of deformation were compared. Results show that the data obtained from image processing software agree with that of SHPB post-processing, which indicates that high-speed camera system designed to track the deformation process in aluminum foam SHPB experiment of is feasible.