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- Title
Inertial stabilization of flexible polymer micro-lattice materials.
- Authors
Yin, Sha; Jacobsen, Alan; Wu, Linzhi; Nutt, Steven
- 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.
- Subjects
PHOTOPOLYMERS; PHOTOPOLYMERIZATION; DYNAMIC mechanical analysis; GLASS transition temperature; STRAIN rate; MATERIALS science; LATTICE dynamics
- Publication
Journal of Materials Science, 2013, Vol 48, Issue 19, p6558
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-013-7452-0