基于灰度共生矩阵理论的PVA纤维分散评价法
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摘要
为了有效地评价PVA纤维束的均匀性,基于灰度共生矩阵理论,并以PVA纤维束搅拌分散后图像的角二阶矩和熵值为主要特征参数,建立PVA纤维束分散评价方法,给出了PVA纤维束的均匀性评价指标(f1和f2),分析了在不同种类分散剂、不同搅拌速度、不同搅拌桨的搅拌参数下PVA纤维束分散效果,绘制了PVA纤维束分散后的角二阶矩和熵值曲线图.结果表明:均匀性评价方法可以评价PVA纤维束分散的均匀性;利用均匀性评价指标分析获得最佳搅拌分散参数,可实现对PVA纤维分散性的快速准确评价.
In order to study how to evaluate the dispersion of PVA fiber bundles uniformly,a variety of agitation and dispersion parameters were tested,and based on the theory of gray coexistence matrix,the dispersion evaluation method of PVA fiber was established. The dispersion effect of PVA fiber under different mixing factors,different stirring speed and different stirring blades was analyzed and the angular second moment of PVA fiber bundle and the entropy value of the line graph was plotted. The result shows that the dispersion of PVA fiber bundles can be evaluated by the method well,which provides a theoretical basis for the study of the dispersion uniformity of PVA fiber bundles.
In order to study how to evaluate the dispersion of PVA fiber bundles uniformly,a variety of agitation and dispersion parameters were tested,and based on the theory of gray coexistence matrix,the dispersion evaluation method of PVA fiber was established. The dispersion effect of PVA fiber under different mixing factors,different stirring speed and different stirring blades was analyzed and the angular second moment of PVA fiber bundle and the entropy value of the line graph was plotted. The result shows that the dispersion of PVA fiber bundles can be evaluated by the method well,which provides a theoretical basis for the study of the dispersion uniformity of PVA fiber bundles.
引文
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[2]郭丽萍,陈波,杨亚男. PVA纤维对混凝土抗裂与增韧效应影响的研究进展[J].水利水电科技进展,2015,35(6):113GUO Liping,CHEN Bo,YANG Yanan. PVA fiber on concrete cracking and toughening effect of progress[J]. Water Resources and Hydropower Engineering Progress,2015,35(6):113
[3]Jr Sydney Fur lan,Joao Bento de Han nai. Shear behavior of fiber reinforced concrete beams[J]. Cement and Concrete Composites,1997,19(4):359
[4]黄一磊,胡健,郑炽嵩.ξ电位对玻璃纤维分散的影响[J].造纸科学与技术,2004,23(1):31HUANG Yilei,HU Jian,ZHENG Zhisong. Effects of xi potential on the dispersion of glass fiber[J]. Science and Technology of Paper Making,2004,23(1):31
[5]KEREKES R J,SCHELL C J. Characterization of fiber flocculation regimes by a crowding factor[J]. Journal of Pulp and Paper Sicence,1992,18(1):32
[6]JEONG S H,KIM S H,HONG C J. The evaluation of evenness of nonwovens using image analysis method[J]. Fibers and Polymers,2001,2(3):164
[7]关晓宇,钱晓明,杨棹航.合成纤维在水中的分散手段与表征方法[J].产业用纺织品,2015,33(8):35GUAN Xiaoyu,QIAN Xiaoming,YANG Zhuohang. The dispersion methods and characterization methods of synthetic fibers in water[J]. Industrial Textiles,2015,33(8):35
[8]侯群群,王飞,严丽.基于灰度共生矩阵的彩色遥感图像纹理特征提取[J].国土资源遥感,2013(4):26HOU Qunqun,WANG Fei,YAN Li. Texture feature extraction of color remote sensing images based on gray level co-occurrence matrix[J]. Remote Sensing of Land and Resources,2013(4):26
[9] HARALICK R M. Statistical and structural approaches to texture[J].Proceedings of the IEEE,1979,67(5):786
[10]杨杰,张文苑,隋学叶,等.分散剂在陶瓷纤维分散过程中的应用[J].应用技术,2014(4):58YANG Jie,ZHANG Wenyuan,SUI Xueye,et al. Application of dispersant in dispersion process of ceramic fiber[J]. Applied Technology,2014(4):58