| 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 |
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| 引用本文： | 魏志强,黄小清,杨宝,汤立群,和郁伟.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[J].实验力学,2011,26(2):117-123. |
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| 作者姓名： | 魏志强 黄小清 杨宝 汤立群 和郁伟 |
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| 作者单位： | 华南理工大学土木与交通学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(批准号: 10872070, 90916026) |
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| 摘 要： | SHPB技术虽然能方便地得出材料的动态应力应变关系,但却不能直观地揭示材料在经受冲击荷载时的变形特征,而这恰恰是泡沫金属力学性能研究的重要方面.为此,本文设计了一套SHPB-高速摄影机系统,借此系统对SHPB实验中的泡沫铝试件进行了实时的变形跟踪拍摄,然后应用图像处理软件对泡沫铝试件的动态变形进行分析并提取了位移信息,...
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| 关 键 词： | 分离式霍普金森压杆(SHPB)实验 高速摄影系统 泡沫铝 动态变形 |
Tracking and Analysis of Aluminum Foam Deformations in SHPB Experiment by Using High-speed Camera |
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| WEI Zhi-qiang,HUANG Xiao-qing,YANG Bao,TANG Li-qun and HE Yu-wei.Tracking and Analysis of Aluminum Foam Deformations in SHPB Experiment by Using High-speed Camera[J].Journal of Experimental Mechanics,2011,26(2):117-123. |
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| Authors: | WEI Zhi-qiang HUANG Xiao-qing YANG Bao TANG Li-qun and HE Yu-wei |
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| Institution: | South China University of Technology, Guangzhou 510640, China;South China University of Technology, Guangzhou 510640, China;South China University of Technology, Guangzhou 510640, China;South China University of Technology, Guangzhou 510640, China;South China University of Technology, Guangzhou 510640, China |
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| Abstract: | 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. |
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| Keywords: | Split Hopkinson Pressure Bar (SHPB) experiment high-speed camera system aluminum foam dynamic deformation |
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