Re- JMPT - Droplets Train on Surface in Additive Manufacturing accepted.pdf (704.58 kB)
Regimes of droplet train impact on a moving surface in an additive manufacturing process
journal contribution
posted on 2011-01-24, 14:17 authored by Saeed Fathi, Phill M. Dickens, Farid FouchalIn jetting-based additive manufacturing, one or more droplet trains are deposited on a moving surface
to fabricate layers in an additive approach. The impact behaviour of the droplets onto the surface defines
the final fabricated layer properties in terms of geometry and surface finish. This paper reports on such
behaviour when depositing a solution of a bio-degradable resin towards an ultimate goal of fabricating
bone implants in an additive manufacturing process. The solution was jetted via a fixed single nozzle continuous
piezoelectric printhead on a moving surface. The effect of two main process parameters, jetting
frequency and substrate linear velocity, on the impact behaviour was investigated. Quantitative analysis
was undertaken to investigate the droplet formation characteristics and droplet/surface interactions. The
phenomena associated with the interaction at the front of the advancing liquid layer were correlated with
the process conditions. The result was a classification of the droplet train/moving surface interactions
into three main regimes depending on the droplet impingement characteristics and the surface motion.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
FATHI, S., DICKENS, P.M. and FOUCHAL, F., 2010. Regimes of droplet train impact on a moving surface in an additive manufacturing process. Journal of Materials Processing Technology, 210 (3), pp. 550–559.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publication date
2010ISSN
0924-0136Publisher version
Language
- en