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Photopolymer Wave Guides, Mechanical Metamaterials and Woven Wire Realisation Methods for Metallic Microlattice Structures

  • Robert MinesEmail author
Chapter
Part of the SpringerBriefs in Applied Sciences and Technology book series (BRIEFSAPPLSCIENCES)

Abstract

This chapter discusses two alternative methods for manufacturing microlattice structures. In the first method, ultra violet light is shone into a liquid photopolymer, and the liquid solidifies in the volume that the light beam has irradiated. This means that complex lattice structures can be created out of liquid polymer. This lattice can either be used to create solid metallic microlattice structures, using investment casting techniques, or the lattice can be electroless plated with nickel phosphorus alloy. In the latter case, the polymer core is then removed, to produce ultra lightweight hollow microlattices. This chapter discusses mainly the manufacture, materials and progressive collapse of the ultra lightweight, hollow, microlattices. Such structures are an important class of the emerging field of mechanical metamaterials, and the latter are briefly introduced. The second method discussed is woven metal. In this, the metal wire (of the order of 1 mm in diameter) is shaped in three dimensions, and touching nodes are soldered or brazed. Relative densities of 6–43% can be obtained. Highly complex lattice patterns can be obtained. Both methods can be used to create shell lattice (Shellular) structures. Photopolymer wave guides are discussed first.

Keywords

Photo polymer wave guides Electroless plating Investment casting Mechanical metamaterials Shellular Woven wire 

References

  1. D.H. Choi, Y.C. Jeong, K. Kang, A monolithic sandwich panel with microlattice core. Acta Mater. 144, 822–834 (2018)CrossRefGoogle Scholar
  2. S.C. Han, J.M. Choi, G. Liu et al., A microscopic shell structure with Schwarz’s D surface. Nat. Sci. Rep. 7, 13405-1–8 (2017)Google Scholar
  3. S.C. Han, J.W. Lee, K. Kang, A new type of low density material: Shellular. Adv. Mater. 27, 5506–5511 (2015)CrossRefGoogle Scholar
  4. A.J. Jacobsen, W.B. Carter, S. Nutt, Micro scale truss structures with three fold and six fold symmetry formed from self propagating polymer wave guides. Acta Mater. 56, 2540–2548 (2008)CrossRefGoogle Scholar
  5. K.J. Kang, Wire woven cellular materials: the present and the future. Prog. Mater. Sci. 69, 213–307 (2015)CrossRefGoogle Scholar
  6. M.G. Lee, J.W. Lee, S.C. Han et al., Mechanical analysis of “Shellular” an ultra low density material. Acta Mater. 103, 595–607 (2016)CrossRefGoogle Scholar
  7. P. Li, Constitutive and failure behaviour in selective laser melted stainless steel for microlattice structures. Mater. Sci. Eng. A 622, 114–120 (2015)CrossRefGoogle Scholar
  8. Y. Liu, T.A. Schaedler, A.J. Jacobsen et al., Quasi-static energy absorption of hollow microlattice structures. Compos. Part B 67, 39–49 (2014a)CrossRefGoogle Scholar
  9. Y. Liu, T.A. Schaedler, X. Chen, Dynamic energy absorption characteristics of hollow microlattice structures. Mech. Mater. 77, 1–13 (2014b)CrossRefGoogle Scholar
  10. M. Mao, J. He, X. Li et al., The emerging frontiers and applications of higher resolution 3D printing. Micromachines (MDPI) 8, 113 (2017)CrossRefGoogle Scholar
  11. NASA, Game changing development programme, ultralight weight core materials for efficient load bearing composite sandwich structures. NASA Research Announcement Appendix No. NNH15ZOA 001N—15GCD—C1: Amendment 1 (2014)Google Scholar
  12. B.D. Nguyen, J.S. Cho, K. Kang, Optimal design of Shellular: a micro architectured material with ultra low density. Mater. Des. 95, 490–500 (2016)CrossRefGoogle Scholar
  13. L. Salari-Sharif, S.W. Godfrey, M. Tootkaboni et al., The effect of manufacturing defects on compressive strength of ultra light hollow microlattices: a data driven study. Addit. Manuf. 19, 51–61 (2018)CrossRefGoogle Scholar
  14. T.A. Schaedler, A.J. Jacobsen, A. Torrents et al., Ultralight metallic microlattices. Science 334, 962–965 (2011)CrossRefGoogle Scholar
  15. J. Sudagar, J. Lian, W. Sha, Electroless nickel, alloy, composite and nano coatings—a critical review. J. Alloys Compd. 571, 183–204 (2013)CrossRefGoogle Scholar
  16. A. Torrents, T.A. Schaedler, A.J. Jacobsen et al., Characterisation of nickel based microlattice materials with structural hierarchy from nano metre to millimeter scale. Acta Mater. 60, 3511–3523 (2012)CrossRefGoogle Scholar
  17. L. Valdevit, J. Bauer, Fabrication of 3D micro architected/nano architectured materials, in Three Dimensional Micro Fabrication Using Two Photon Polymerisation: Fundamentals, Technology and Applications, ed. by T. Baldacchini (Elsevier, Oxford, UK, 2016)Google Scholar
  18. X. Yu, J. Zhou, H. Liang et al., Mechanical metamaterials associated with stiffness, rigidity and compressibility: a brief review. Prog. Mater. Sci. 94, 114–173 (2018)CrossRefGoogle Scholar
  19. Z. Zheng, W. Smith, J. Jackson et al., Multiscale metallic metamaterials. Nat. Mater. 15, 1100–1107 (2016)CrossRefGoogle Scholar

Copyright information

© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.School of EngineeringUniversity of LiverpoolLiverpoolUK

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