Spreadability Testing of Powder for Additive Manufacturing

Christopher Neil Hulme-Smith, Vignesh Hari, Pelle Mellin
2021 Berg- und Huttenmännische Monatshefte (BHM)  
AbstractThe spreading of powders into thin layers is a critical step in powder bed additive manufacturing, but there is no accepted technique to test it. There is not even a metric that can be used to describe spreading behaviour. A robust, image-based measurement procedure has been developed and can be implemented at modest cost and with minimal training. The analysis is automated to derive quantitative information about the characteristics of the spread layer. The technique has been
more » ... has been demonstrated for three powders to quantify their spreading behaviour as a function of layer thickness and spreading speed.
doi:10.1007/s00501-020-01069-9 fatcat:kvwxn6cabfe5lbzn6ewgcr2ofq