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Fabrication and mechanical characterization of 3D woven Cu lattice materials
Affiliation:1. Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA;2. Department of Civil Engineering, Johns Hopkins University, Baltimore, MD 21218, USA;3. Department of Ocean Engineering, Korea Maritime & Ocean University, Busan 606-791, South Korea;4. SAERTEX, LLC., Huntersville, NC 28078, USA;5. Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA;1. Department of Mechanical and System Engineering, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671–2280, Japan;2. Department of Mechanical Engineering, National University Corporation-Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090–8507, Japan;3. Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido 090–8507, Japan;1. School of Materials, The University of Manchester, Manchester M13 9PL, United Kingdom;2. School of Mechanical, Aerospace & Civil Engineering, The University of Manchester, Manchester M13 9PL, United Kingdom;1. Queensland Centre for Advanced Materials Processing and Manufacturing (AMPAM), School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland 4072, Australia;2. School of Science and Engineering, University of the Sunshine Coast, Sippy Downs, Queensland 4575, Australia;1. Institute for Frontier Materials, Deakin University, GTP Building, 75 Pigdons Road, Waurn ponds, VIC 3216, Australia;2. Centre for Advanced Hybrid Materials, Department of Materials Engineering, Monash University, Clayton, VIC 3800, Australia;3. Laboratory of Hybrid Nanostructured Materials, National University of Science and Technology “MISIS”, Leninsky prosp. 4, Moscow 119049, Russia;4. Department of Materials Science and Engineering, POSTECH (Pohang University of Science and Technology), Pohang, 790-784, South Korea;5. LEM3, Université de Metz, Ile du Saulcy, 57045 Metz, France;1. College of Engineering and Emerging Technologies, University of the Punjab, Lahore, Pakistan;2. Institute for Materials Research, SPEME, University of Leeds, LS2 9JT, UK;3. Morgan Advanced Materials, Swansea SA6 8PP, UK
Abstract:3D metallic lattices designed to have two distinctly different material architectures have been woven with metallic Cu wires. A vacuum soldering technique was employed to metallurgically bond the wire nodes and form stiff 3D lattice materials. The structures and mechanical properties of the as-woven and soldered lattices were characterized by optical microscopy and micro-scale mechanical property experiments. The measured in-plane shear stiffness shows good agreement with predictions from finite element (FE) models that account for variations in the manufacturing and solder bonding. The study indicates that stiffness is influenced by the percentage of bonded nodes and the location of bonding. The 3D woven lattice materials manufactured in this study exhibited a very high percentage (80%) of bonded nodes and a unique combination of stiffness and density as compared to that typically reported for ultra lightweight lattice materials.
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