高速冲击荷载作用后泡沫铝夹层板表观变形立体视觉测量

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (16) : 122-127.

论文

单宝华1,2，张博一2，严雨2

作者信息 +

Stereovision measurement for surface deformation of sandwich plates with aluminum foam cores under high speed impact loading

SHAN Bao-hua1, 2，ZHANG Bo-yi2，YAN Yu2

Author information +

文章历史 +

摘要

针对高速冲击荷载作用后泡沫铝夹层板表观变形测量需要，研究基于立体视觉的表观变形三维测量方法。选择去均值归一化灰度互相关系数（NCCC）进行区域匹配，通过调整视差范围消除虚假误差，以实现最大最小视差约束；并综合使用5种约束优化视差图。据平行双目立体视觉模型计算三维点云坐标，用Delaunay三角剖分获得表观变形曲面。基于MATLAB平台集成表观变形立体视觉三维测量系统，进行距离测量精度及比较试验证明该方法的有效性及可靠性。用集成系统完成高速冲击荷载作用后泡沫铝夹层板表观变形的三维测量试验。结果表明，重建的三维曲面能准确再现高速冲击荷载作用后泡沫铝夹层板的表观变形，为高速冲击荷载作用后靶标表观变形提供全新的测量方法。

Abstract

To measure surface deformation of sandwich plates with aluminum foam cores under high speed impact loading, this paper presents a stereovision-based surface deformation measurement method. The removing mean normalized gray cross-correlation coefficient is selected to realize area matching, the maximum and minimum parallactic restriction is acquired by adjusting the disparity range to eliminate the false parallax, and other four constraints are combined with the former to optimize the disparity map. Then 3D point clouds are calculated according to the parallel binocular stereovision model, and the surface deformation profile curves are acquired by using Delaunay triangulation. Moreover, the stereovision 3D measurement system for surface deformation is integrated based on MATLAB, the precision and comparison experiments of distance measurement are conducted to testify the validity and reliability of the proposed method. The surface deformation 3D measurement test of aluminum foam cores sandwich plates under high speed impact loading is also performed with the integrated system. The results indicate that the reconstructed 3D surface can accurately display the surface deformation of sandwich plates with aluminum foam cores under high speed impact loading. Accordingly, a brand new approach is obtained to measure surface deformation of target board under high speed impact loading.

导出引用

单宝华1,2，张博一2，严雨2. 高速冲击荷载作用后泡沫铝夹层板表观变形立体视觉测量[J]. 振动与冲击, 2015, 34(16): 122-127

SHAN Bao-hua1, 2，ZHANG Bo-yi2，YAN Yu2. Stereovision measurement for surface deformation of sandwich plates with aluminum foam cores under high speed impact loading[J]. Journal of Vibration and Shock, 2015, 34(16): 122-127

参考文献

[1] 庞宝君,郑伟,陈勇. 基于Taylor实验及理论分析的泡沫铝动态冲击特性研究[J]. 振动与冲击，2013, 32(12): 154-158.
PANG Bao-jun, ZHENG Wei,CHEN Yong. Dynamic impact behavior of aluminum foam with a Taylor impact test and a theoretical analysis [J]. Journal of Vibration and Shock, 2013, 32(12): 154-158.
[2] 迟润强,庞宝君,何茂坚,等. 球形弹丸超高速正撞击薄板破碎状态实验研究[J]. 爆炸与冲击, 2009, 29(3):231-236.
CHI Run-qiang, PANG Bao-jun, HE Mao-jian,et al. Experimental investigation for deformation and fragmentation of spheres penetrating sheets at hypervelocity [J]. Explosion and Shock Waves, 2009, 29(3):231-236.
[3] Murr E, Trillo E A, Bujanda A A, et al. Comparison of residual microstructures associated with impact craters in Fcc stainless steel and Bcciron targets: the microtwin versus microband issue[J]. Acta Materialia,2002, 50(1): 121-131.
[4] 邹动利.固溶态AM60B镁合金高速撞击变形及损伤行为[D].哈尔滨：哈尔滨工业大学,2010:24-25.
[5] 张宏伟,张国雄,李真,等. 非接触光学测头在金属强反射表面测量中的应用[J]. 天津大学学报, 2004, 37(10): 910-913.
ZHANG Hong-wei, ZHANG Guo-xiaong, LI Zhen，et al. Application of non-contact optical probe in measurement of high-reflective metallic surface[J]. Journal of Tianjin University,2004, 37(10): 910-913.
[6] 刘建伟,粱晋,梁新合,等. 大尺寸工业视觉测量系统[J]. 光学精密工程, 2010, 18(1): 126-134.
LIU Jian-wei, LIANG Jin, LIANG Xin-he,et al. Industrial vision measuring system for large dimension work-pieces[J]. Optics and Precision Engineering, 2010, 18(1): 126-134.
[7] 于起峰,尚洋,伏思华,等. 大型结构变形及形貌摄像测量技术研究进展[J].实验力学,2011,26(5):479-489.
YU Qi-feng, SHANG Yang,FU Si-hua,et al. Development of videometrics for large-scale structural deformation and topography measurement[J]. Journal of Experimental Mechanics, 2011, 26(5):479-489.
[8] Tiwari V, Sutton M A, McNeill S R,et al. Application of 3D image correlation for full-field transient plate deformation measurements during blast laoding[J]. International Journal of Impact Engineering, 2009,36:862-874.
[9] Nansteel M W, Chen C C T. High speed photography and digital image correlation for the study of blast structural response[J]. ITEA J Test Eval,30:45-56.
[10] Spranghers K, Vasilakos I, Lecompter D, et al. Fufll-field deformation measurements of aluminum plates under free air blast loading[J]. Experimental Mechanics, 2012, 52(9): 1371- 1384.
[11] 高庆吉,洪炳熔,阮玉峰.基于异构双目视觉的全自主足球机器人导航[J]. 哈尔滨工业大学学报,2003, 35(9):1029-1032.
GANG Qing-ji, HONG Bing-rong, RUAN Yu-feng. Navigation of small-size autonomous soccer robot based on iso-vision system with two cameras[J]. Journal of Harbin Institute of Technology,2003, 35(9): 1029-1032.
[12] 吴福朝. 计算机视觉中的数学方法[M]. 北京：科学出版社，2008: 46-47.
[13] 张广军. 视觉测量[M]. 北京：科学出版社,2008: 134-136.
[14] Zhang Z Y. A flexible new technique for camera calibration [J].IEEE Trans. On Pattern Analysis and Machine Intelligence, 2000, 22(11): 1330-1334.
[15] 章毓晋. 图像理解与计算机视觉(上)[M]. 北京: 清华大学出版社, 2000: 82-83.
[16] Scharstein D, Szeliski R. Middlebury stereo vision research page[EB/OL]. http//vision. middlebury. edu/stereo/data/ scenes,2001, 2011-02-11.
[17] 高宏伟,于洋,刘晓阳. 双目立体视觉三维重建实验平台研究[J].计算机工程与应用, 2009, 45:149-152.
GAO Hong-wei, YU Yang, LIU Xiao-yang. Research of 3D reconstruction experiment platform based on binocular vision [J].Computer Engineering and Applications,2009,45:149- 152.