| 液相/粉末等离子射流形态特征可视化分析 |
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| 引用本文： | 张海鸥,于洋,王桂兰,芮道满.液相/粉末等离子射流形态特征可视化分析[J].华中科技大学学报(自然科学版),2011(1):54-57. |
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| 作者姓名： | 张海鸥 于洋 王桂兰 芮道满 |
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| 作者单位： | 华中科技大学数字制造装备与技术国家重点实验室;华中科技大学材料成形与模具技术国家重点实验室; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA04Z142); 国家自然科学基金资助项目(50474053) |
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| 摘 要： | 用标准化相同二阶中心矩椭圆的长短轴比作为等离子射流形态的特征值,以反映射流温度、速度等相关工艺参数的变化,建立了等离子熔射成形过程在线可视化数据模型.实验中使用计算机视觉及图像处理技术研究了液相/粉末等离子熔射射流特征值与熔射能量相关工艺参数之间的关系.结果表明:随着熔射功率的增大,射流的特征值也增大,而液相熔射的特征值小于粉末熔射的特征值;随着Ar工作气体流量的增大,射流特征值并非增大而是减小.
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| 关 键 词： | 液相/粉末等离子 熔射 射流 计算机视觉 图像处理 工艺参数 标准化相同二阶中心矩椭圆 特征值 |
Visualization of morphologic characteristics of powder/liquid plasma spray jets |
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| Zhang Haioua Yu Yanga Wang Guilanb Rui Daomana.Visualization of morphologic characteristics of powder/liquid plasma spray jets[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(1):54-57. |
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| Authors: | Zhang Haioua Yu Yanga Wang Guilanb Rui Daomana |
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| Affiliation: | Zhang Haioua Yu Yanga Wang Guilanb Rui Daomana(a State Key Laboratory of Digital Manufacturing Equipment and Technology,b State Key Laboratory of Material Processing and Die and Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | The axial ratio of the ellipse with same normalized second-order central moments was takend as the eigenvalue of plasma spray jet morphologic characteristic.The method that reflects the jet temperature,velocity and related process parameters using the eigenvalue was developed.In the experiment,the computer vision and image processing technology was used to study the relationship between eigenvalues and the powder and the newly emerging liquid plasma spray process parameters.The result indicates that with th... |
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| Keywords: | powder/liquid plasma spray jet computer vision image processing process parameters the ellipse with same normalized second-order central moments eigenvalues |
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