Smart Lattice Structures with Self-Sensing Functionalities via Hybrid Additive Manufacturing Technology.
Smart Lattice Structures with Self-Sensing Functionalities via Hybrid Additive Manufacturing Technology.
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DOI：
10.3390/mi15010002
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发表时间：
2023-12
期刊：
影响因子：
3.4
通讯作者：
Liu He;Peiren Wang;Junhui Yang;Kaoyi Fan;Hanqiang Zhang;Luyan Zhang;Mingxing Jiang;Xiaoyi Chen-X
中科院分区：
文献类型：
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作者：
Liu He;Peiren Wang;Junhui Yang;Kaoyi Fan;Hanqiang Zhang;Luyan Zhang;Mingxing Jiang;Xiaoyi Chen-X
晶格结构是由规则的重复晶胞组成的一组多孔材料。由于其非凡的机械性能，如比机械强度、超低密度、负泊松比等，网格结构已广泛应用于航空航天、医疗器械、建筑和汽车领域。混合增材制造（HAM）是一种3D打印工艺和其他互补工艺的集成制造技术，正在成为方便地提供具有多功能的晶格结构的合适候选者，而不仅仅是机械方面。本文提出了一种将光聚合（VPP）和化学镀工艺相结合的HAM技术来制备智能金属涂层晶格结构。应用VPP 3D打印工艺来创建高度精确的聚合物晶格结构，然后进行无电镀以存款一层薄金属，其可用作电阻传感器，用于监测结构上的机械负载。成功地获得了电阻率分别为8.2×10−7Ω·m和2.0 ×10−8 Ω·m的Ni-P层和铜层。智能晶格结构与力加载自感知功能的制造证明了这种HAM技术用于制造多功能聚合物-金属晶格复合材料的可行性。
Lattice structures are a group of cellular materials composed of regular repeating unit cells. Due to their extraordinary mechanical properties, such as specific mechanical strength, ultra-low density, negative Poisson’s ratio, etc., lattice structures have been widely applied in the fields of aviation and aerospace, medical devices, architecture, and automobiles. Hybrid additive manufacturing (HAM), an integrated manufacturing technology of 3D printing processes and other complementary processes, is becoming a competent candidate for conveniently delivering lattice structures with multifunctionalities, not just mechanical aspects. This work proposes a HAM technology that combines vat photopolymerization (VPP) and electroless plating process to fabricate smart metal-coated lattice structures. VPP 3D printing process is applied to create a highly precise polymer lattice structure, and thereafter electroless plating is conducted to deposit a thin layer of metal, which could be used as a resistive sensor for monitoring the mechanical loading on the structure. Ni-P layer and copper layer were successfully obtained with the resistivity of 8.2×10−7Ω⋅m and 2.0 ×10−8 Ω⋅m , respectively. Smart lattice structures with force-loading self-sensing functionality are fabricated to prove the feasibility of this HAM technology for fabricating multifunctional polymer-metal lattice composites.