An effective parameter optimization technique for vibration flow field characterization of PP melts via LS-SVM combined with SALS in an electromagnetism dynamic extruder
A method for predicting the optimal vibration field parameters by least square support vector machine(LS-SVM)is presented in this paper.One convenient and commonly used technique for characterizing the the vibration flow field of polymer melts films is small angle light scattering(SALS)in a visualized slit die of the electromagnetism dynamic extruder.The optimal value of vibration vibration frequency,vibration amplitude,and the maximum light intensity projection area can be obtained by using LS-SVM for prediction.For illustrating this method and show its validity,the flowing material is used with polypropylene(PP)and fifteen samples are tested at the rotation speed of screw at 36rpm.This paper first describes the apparatus of SALS to perform the experiments,then gives the theoretical basis of this new method,and detail the experimental results for parameter prediction of vibration flow field.It is demonstrated that it is possible to use the method of SALS and obtain detailed information on optimal parameter of vibration flow field of PP melts by LS-SVM.
Guangming Xian
School of software,South China Normal University,Foshan 528225,China
国际会议
上海
英文
1-7
2017-12-28（万方平台首次上网日期，不代表论文的发表时间）