3DP process for fine mesh structure printing

By K. Lu, W. Reynolds. 2008

149 citations recorded by the source corpus.

Three dimensional printing (3DP) is a unique technique for creating complex shapes. However, printing feature sizes at less than 500 μm with high integrity and intricate structures have not been possible. In this study, TiNiHf shape memory alloy (SMA) powder was printed into 3D mesh structures of 300 μm wire width. Effects of printing layer thickness and binder saturation level on the integrity and dimensional accuracy of the 3D mesh structures were evaluated. 35 μm printing layer thickness and 170% binder saturation level offer the highest mesh structure integrity. Also, 35 μm printing layer thickness results in the smallest dimensional deviation from the designed 200 μm mesh width with the smallest standard deviation. Overall, 35 μm printing layer thickness and 170% binder saturation level are the most preferred printing condition for the designed 3D mesh structure.

Subfields: Automotive Engineering, Biomedical Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/59185d98bba47717544f1dcaa75d475945221287

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Citations in the corpus

A review on quality control in additive manufacturing (2018, background): “Lu and Reynolds (2008) analyzed printing variables mainly influenced on integrity, dimensional accuracy and minimal feature sizes that can be printed for less than 500 mm 3Dmesh structures (TiNiHf shape memory alloy).”
Effects of layer thickness and binder saturation level parameters on 3D printing process (2011, methodology): “Lu and Reynolds [ 11 ] focused on the study and fabrication of 3D mesh structures of 300 μm wire width with TiNiHf SMA powder via the 3D printing process.”
Metal Binder Jetting Additive Manufacturing: A Literature Review (2020, background): “Lu and Reynolds investigated the effects of binder saturation and layer thickness on the dimension of printed TiNiHf meshes using powders of 5.5 µm [127].”
A review on recent developments in binder jetting metal additive manufacturing: Materials and process characteristics (2019, unknown): “Towards improving green part integrity, a research work developed by Kathy Lu et al. [92,93] determine that smaller powder particle sizes improve green part strength, due to the reduced binder spreading rate variations, and the faster and the better binder spreading due to the higher capillarity…”
Multiple material additive manufacturing – Part 1: a review (2013, background): “3DP has demonstrated the capability of fabricating parts of a variety of materials, including ceramics, metals, shape-memory alloys (SMA) and polymers with an array of unique geometries (Cawley 1999, Seitz et al. 2005, Lu and Reynolds 2008, Vorndran et al. 2009).”