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.
作者
曹源文
吴春洋
郑婷婷
肖伟
夏柱林
郑南翔
CAO Yuanwen;WU Chunyang;ZHENG Tingting;XIAO Wei;XIA Zhulin;ZHENG Nanxiang(School of Mechanical and Automotive Engineering, Chongqing Jiaotong University,Chongqing 400074,China;Jiqi Expressway(Dangshan section), Project Office,Suzhou 400074, Anhui, China;Highway Engineering Institute, Chang'an University,Xi'an 710064,China)
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2019年第1期157-161,共5页
Journal of Harbin Institute of Technology
基金
安徽省交通科技基金项目(Ahjtki20140051)
河南省交通厅项目(Hnxrc2013001)
关键词
PVA纤维束
灰度共生矩阵
角二阶矩
熵
PVA fiber bundle
gray covariance matrix
angle second moment
entropy
