Dixit Nidhi, Jain Prashant K
FFF Lab, Mechanical Engineering Department, PDPM Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, India.
3D Print Addit Manuf. 2024 Aug 20;11(4):1533-1544. doi: 10.1089/3dp.2023.0049. eCollection 2024 Aug.
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.
熔融沉积成型（FFF）为低成本轻松制造复杂结构开辟了新机遇。增材制造的晶格结构已在不同领域广泛应用。然而，通过FFF制造的零件存在表面和尺寸特性不佳的问题。通过使用不同的后处理技术克服了这些缺点。本研究聚焦于通过化学处理方法对柔性晶格结构进行后处理。柔性晶格结构采用热塑性聚氨酯材料制造。本研究选用了体心立方晶格结构。所制造的晶格结构通过化学浸渍法使用二甲基亚砜溶剂进行后处理。本研究选择的响应特性为表面粗糙度、抗压强度和尺寸精度。为作比较，在化学处理方法前后进行了测量。实验研究结果表明，所提出的方法显著提高了表面质量和尺寸精度，而后处理方法后观察到抗压强度略有降低。
