Journal of Materials Science

, Volume 48, Issue 19, pp 6558–6566 | Cite as

Inertial stabilization of flexible polymer micro-lattice materials

  • Sha Yin
  • Alan J. Jacobsen
  • Linzhi Wu
  • Steven R. Nutt
Article

Abstract

Soft micro-lattice materials with different lattice geometries were fabricated using a self-propagating photopolymer waveguide process. The parent polymer was characterized by dynamic mechanical analysis and the glass transition temperature shifted with equivalent strain rate. Quasi-static and dynamic compression tests were subsequently carried out to investigate the inertial stabilization of lattice member buckling as a function of strain rate and structural geometry (e.g. relative density and lattice aspect ratio). A high-speed digital camera was used to record the progression of deformation and failure events during compression. The micro-lattice structures exhibited super compressibility and increased strength. The observed strength increase, particularly for high aspect ratio and high strain rate, was attributed to inertial stabilization.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Sha Yin
    • 1
    • 2
  • Alan J. Jacobsen
    • 3
  • Linzhi Wu
    • 2
  • Steven R. Nutt
    • 1
  1. 1.Department of Chemical Engineering and Materials ScienceUniversity of Southern CaliforniaLos AngelesUSA
  2. 2.Center for Composite MaterialsHarbin Institute of TechnologyHarbinChina
  3. 3.HRL Laboratories LLCMalibuUSA

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