固体火箭发动机体空间缺陷精确定位方法
Defect accurate positioning method of solid rocket motor in volume space
-
摘要: 在固体火箭发动机体数据三维重构的基础上,构建出符合脱黏、气泡和夹渣体数据特征的三维相似变换模板,经三维相似变换后,定位出各类缺陷的体数据场位置,选取缺陷几何中心为缺陷精确定位的标志点,给出了体空间中缺陷几何中心的计算方法.设计制作了预置典型缺陷的模拟固体火箭发动机,测量得到的缺陷几何中心和实际几何中心的距离与最大直径的比值都不大于10%,即测量得到的几何中心与实际几何中心很接近,因此对缺陷几何中心的定位是准确的.
-
关键词:
- 固体火箭发动机 /
- 体空间 /
- 三维相似变换 /
- 缺陷定位 /
- 工业CT(computed tomography)
Abstract: On the basis of 3-D reconstruction of the solid rocket motor volume data,the three-dimensional similarity transformation templates compliant with the volume data features of debonding,bubbles and slag inclusion were built.The volume data fields of various defects were located by 3-D similarity transformation.The defect geometric center was selected as the mark point for defect accurate positioning,and the calculation method in volume space of the defect geometric center was given.The simulated solid rocket motor with preset typical defects was designed.Through the experiment,the ratio of the measured distance between the geometric center and the actual geometric center,to the maximum diameter is less than 10%.That's to say,the measured geometric center and the actual geometric center are very close,and the positioning of the geometric center of defects is accurate. -
[1] 邢耀国,董可海,沈伟,等.固体火箭发动机使用工程[M].北京:国防工业出版社,2010:129-130. [2] 朱敏,卢洪义,李海燕.固体火箭发动机三维可视化无损检测系统设计[J].兵工学报,2008,29(7):891-896. ZHU Min,LU Hongyi,LI Haiyan.The design of solid missile motor 3D visualization nondestructive inspection system[J].Acta Armamentrii,2008,29(7):891-896.(in Chinese) [3] 朱敏,卢洪义,李海燕.固体发动机虚拟剖切故障诊断技术研究[J].固体火箭技术,2010,33(4):232-236. ZHU Min,LU Hongyi,LI Haiyan.Research on virtual cutting fault diagnosis technology of solid rocket motors[J].Journal of Solid Rocket Technobgy,2010,33(4):232-236.(in Chinese) [4] 于光辉,卢洪义,朱敏,等.基于相似变换的CT图像缺陷定位方法[J].CT理论与应用研究,2012,21(1):37-42. YU Guanghui,LU Hongyi,ZHU Min,et al.Defects location method of CT image based on similarity transformation[J].CT Theory and Applications,2012,21(1):37-42.(in Chinese) [5] 朱敏,卢洪义,李海燕.基于VTK的固体发动机三维重建与可视化[J].弹箭与制导学报,2009,29(4):136-140. ZHU Min,LU Hongyi,LI Haiyan.3D reconstruction and visualization of solid motor based on VTK[J].Journal of Projectiles,Rockets,Missiles and Guidance,2009,29(4):136-140.(in Chinese) [6] 马志强,孙世宇,王春平,等.基于迭代阈值的弹目图像边缘检测方法研究[J].信息技术,2011,(1):26-28,51. MA Zhiqiang,SUN Shiyu,WANG Chunping,et al.Research on projectile and target's image edge detection method based on the iterative threshold[J].Information Technology,2011(1):26-28,51.(in Chinese) [7] 刘俊,吴谨.一种基于梯度的直方图阈值图像分割改进方法[J].计算机与数字工程,2010,38(4):131-133. LIU Jun,WU Jin.A histogram threshold value image segmentation improvement method based on gradient[J].Computer and Digital Engineering,2010,38(4):131-133.(in Chinese) [8] Huang D,Wang C.Optimal multi-level thresholding using a two-stage otsu optimization approach[J].Pattern Recognition Letters,2009,30(3):275-284. [9] Brodlie K,Wood J.Recent advances in volume visualization[J].Computer Graphics Forum,2001,20(2):125-148. [10] Bartz D,Meibner M.Voexls versurs polygons:a comparative approach for volume graphics[M]//CHEN Min,Kaufman A E,Yagel R.Volume Graphics.London:Springer,1999:171-184. [11] Mora B,Jessel J,Caubet R.A New object-order ray-casting algorithm [C]//Proceedings of the IEEE Visualization 2002.Washington:IEEE Press,2002:203-210. [12] Edward Swan J.Object-order rendering of discrete objects [D].Ohio,US:The Ohio State University,1998. [13] 朱敏,卢洪义,肖志斌,等.固体发动机CT图像的一种自动分割方法[J].固体火箭技术,2008,31(2):201-204. ZHU Min,LU Hongyi,XIAO Zhibin,et al.A kind of automatic segmentation method for solid motor CT image[J].Journal of Solid Rocket Technobgy,2008,31(2):201-204.(in Chinese) [14] 朱敏,卢洪义,丛培胜,等.固体发动机CT 检测中的一种缺陷识别方法[J].航空动力学报,2009,24(1):230-234. ZHU Min,LU Hongyi,CONG Peisheng,et al.A method of defect recognition in solid motor CT testing[J].Journal of Aerospace Power,2009,24(1):230-234.(in Chinese) [15] 杨兴根 陈宇杰.固体火箭发动机专用ICT机械扫描系统[J].推进技术,1999,20(6):106-108. YANG Xinggen,Chen Yujie.ICT scan system for solid rocket motors[J].Journal of Propulsion Technology,1999,20(6):106-108.(in Chinese)
点击查看大图
计量
- 文章访问数: 1284
- HTML浏览量: 5
- PDF量: 960
- 被引次数: 0