Ultrasound-assisted microfeeding of fine powders
Ultrasound-assisted microfeeding of fine powders
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.
microfeeding, ultrasound, fine powders
2-8
Lu, Xuesong
e3eb4386-7dc9-417e-bd5c-bbdec78f7ec5
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2
February 2008
Lu, Xuesong
e3eb4386-7dc9-417e-bd5c-bbdec78f7ec5
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2
Lu, Xuesong, Yang, Shoufeng and Evans, Julian R.G.
(2008)
Ultrasound-assisted microfeeding of fine powders.
[in special issue: Selected papers from 1st UK-China Particle Technology Forum]
Particuology, 6 (1), .
(doi:10.1016/j.cpart.2007.10.007).
Abstract
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.
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Published date: February 2008
Keywords:
microfeeding, ultrasound, fine powders
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 165045
URI: http://eprints.soton.ac.uk/id/eprint/165045
ISSN: 1674-2001
PURE UUID: 29480111-722d-4d26-8638-87fdbdaae458
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Date deposited: 08 Oct 2010 09:07
Last modified: 14 Mar 2024 02:09
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Contributors
Author:
Xuesong Lu
Author:
Julian R.G. Evans
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