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Binder Saturation as a Controlling Factor for Porosity Varia
Binder jet additive manufacturing (BJ-AM) is a rapidly evolving 3D printing technique where the access to an array of powder materials is expanding. The use of silica sand has grown in popularity within the BJ-AM sector and has been shown to have a high potential of replicating physiochemical properties of natural materials for geoengineering applications. Consistent porosity is critical for 3D-printed samples used in rock testing since homogeneity between samples would provide unlimited capabilities in a laboratory setting. Binder saturation is one of the key user-set parameters that controls the ratio between the dimensional tolerance and porosity. Nonetheless, the binder saturation is an internal calculation by the printer’s software that relies on several assumptions, where the most important physical aspect is droplet spacing. This study establishes relationships between the droplet spacing, dimensional tolerance, binder saturation, and porosity. By holding the droplet volume constant and changing its spacing, better control of saturation was observed. Higher saturation reduced porosity and increased circularity of cylindrical samples, but overall dimensional tolerance of fine features was reduced. This study provides improvements of 3D-printed rock for the representation of porosity and geomechanical properties observed in natural sandstones.
Standard price:
10.00
Discounted price:
1.00
Your price:
10.00
You could save:
90.0%
Quantity:
Quantity is required.
Quantity must be a positive whole number.
Author(s):
Kevin J. Hodder, Kaylee Craplewe, Sergey Ishutov, and Rick Chalaturnyk
Company(s):
University of Alberta
Year:
2021
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