Ultrasound-assisted microfeeding of fine powders

作     者：Xuesong Lu Shoufeng Yang Julian R.G. Evans 

作者机构：Department of Materials Queen Mary University of London Mile End Road London E1 4NS UK 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2008年第6卷第1期

页      面：2-8页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Engineering and Physical Sciences Research Council (EPSRC) under Grant No. GR/T28812 

主　　题：Microfeeding Ultrasound Fine powders 

摘      要：Ultrasonic microfeeding of powders is a new and promising method for use in solid freeforming and pharmaceutical dosing. In this work, computer-controlled microfeeding systems using ultrasonic vibration of a capillary were built. A wide range of controlled, stable rates of flow and switching control were achieved in the acoustic vibration system and uniform powder doses were obtained in the ultrasonic system. Experimental results show that nozzle diameter, transmission fluid depth, waveform, voltage amplitude, frequency and oscillation duration all influence the dose mass. Among these factors, nozzle diameter, voltage amplitude and oscillation duration can be best used to control the dose mass. An artificial neural network （ANN） technique was applied to predict the dose mass. Based on these research results, four types of microfeeding were proposed.