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IntroductionVibration molding is increasingly of impor-tance in polymer processing[1] ,its influences onthe rheological characteristics and the finishedproperties of products mainly depend on the vibra-tion amplitude,frequency and its duration.How-ever,the wave attenuation and its phase shift areinevitable,which causes errors in rheometry,butit is still poorly understood.Therefore,itis neces-sary to study the shear wave propagation anddamping in polymer melt.1 Experimental Technology1 .1 … 相似文献
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