C/C复合材料的组分含量测量是进行性能分析和改进工艺的有效手段.本文作者在分析化学气相渗透工艺(CVI)制备的纯净组织C/C复合材料偏振光显微图像特点的基础上,基于模式识别原理提出了一种自适应多目标图像分割方法.根据最大类间方差准则、采用改进的Otsu算法,该系统自动计算孔隙、纤维和热解炭各相间的最佳分割阈值.实验结果表明,该方法不受C/C复合材料组分含量和组分分布形式的影响,分割质量满足定量测量的要求.
参考文献
| [1] | Zhang W G,Hüttinger K J.Densification of a 2D carbon fiber preform by isothermal,isobaric CVI:Kinetics and carbon microstructure[J].Carbon,2003,41(12):2325-2337. |
| [2] | 李江鸿,张红波,熊翔,王林山,左劲旅,黄伯云.不同纤维体积分数CVIC/C复合材料的石墨化度[J].复合材料学报,2005,22(3):55-59.Li Jianghong,Zhang Hongbo,Xiong Xiang,Wang Linshan,Zuo Jinlü,Huang Baiyun.Graphitization degree of C/C composites with various fibre volume fractions[J].Acta Materiae Compositae Sinica,2005,22(3):55-59. |
| [3] | Piat R,Tsukrov I,Mladenov N,et al.Material modeling of the CVI-infiltrated carbon felt Ⅰ:Basic formulae,theory and numerical experiments[J].Composites Science and Technology,2006,66(15):2997-3003. |
| [4] | Blanc R,Germain Ch,Da Costa J P,Baylou P,Cataldi M.Fiber orientation measurements in composite materials[J].Composites Part A,2006,37(2):197-206. |
| [5] | 孙万昌,李贺军,白瑞成,卢锦花,黄勇.沉积温度对碳/碳复合材料密度均匀性的影响[J].硅酸盐学报,2005,33(6):780-783.Sun Wanchang,Li Hejun,Bai Ruicheng,Lu Jinhua,Huang Yong.Influence of deposition temperature on density uniformity of C/C composites[J].Journal of the Chinese Ceramic So ciety,2005,33(6):780-783. |
| [6] | 杨彩云,刘铮,万振凯,李嘉禄.机织物复合材料纤维体积含量计算机图像测定[J].复合材料学报,2005,22(4):142-148.Yang Caiyun,Liu Zheng,Wan Zhenkai,Li Jialu.Determination of fiber volume fractions in woven fabric composites laminates by image analysis[J].Acta Materiae Compositae Sinica,2005,22(4):142-148. |
| [7] | 李克智,赵建国,李爱军,李贺军.热梯度CVI技术制备C/C复合材料[J].材料科学与工艺,2005,13(5):449-451.Li Kezhi,Zhao Jianguo,Li Aijun,Li Hejun.Research on thermal gradient CVI process for preparing C/C composites[J].Materials Science & Technology,2005,13(5):449-451. |
| [8] | Otsu N.A threshold selection method from gray-level histograms[J].IEEE Transactions on Systems,Man,and Cyber netics,1979,9(1):62-66. |
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