Journal
3D PRINTING AND ADDITIVE MANUFACTURING
Volume -, Issue -, Pages -Publisher
MARY ANN LIEBERT, INC
DOI: 10.1089/3dp.2023.0049
Keywords
fused filament fabrication; thermoplastic polyurethane; flexible parts; chemical treatment; lattice; surface roughness
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Chemical post-processing can significantly improve the surface quality and dimensional accuracy of flexible lattice structures, although it may slightly reduce their compressive strength.
Fused filament fabrication (FFF) has opened new opportunities for the effortless fabrication of complex structures at low cost. The additively manufactured lattice structures have been widely used in different sectors. However, the parts fabricated through FFF suffered from poor surface and dimensional characteristics. These disadvantages have been overcome by using different post-processing techniques. The present investigation has been focused on the post-processing of flexible lattice structures through chemical treatment methods. The flexible lattice structures have been fabricated by using thermoplastic polyurethane material. Body-centered cubic lattice structures have been chosen for the present study. The fabricated lattice structures have been post-processed using dimethyl sulfoxide solvent through the chemical immersion method. The response characteristics chosen for the present study were surface roughness, compressive strength, and dimensional accuracy. The measurement has been taken before and after the chemical treatment method for comparison purpose. The results of experimental studies depicted that the proposed methodology significantly enhanced the surface quality and dimensional accuracy, whereas compressive strength has been observed to be slightly reduced after the post-processing method.
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