Characterization of a high strain composite material
L'Garde has designed and developed a high-strain composite material consisting of car- bon FIbers embedded in a silicone matrix. The behavior of this material is significantly different from standard composites and the paper presents special test methods to measure the properties of this material. It is found that rule of mixtures estimates are quite accurate for the longitudinal moduli in tension and bending, but less accurate for compression. The Poisson's ratio prediction is also not accurate. Regarding the strength of the composite, it is found that conservative predictions of tensile and compressive strengths can be obtained respectively from the Weibull distribution of the strength of a single fiber combined with a simple bundle theory, and the elastic fiber microbuckling stress.
© 2012 by Ignacio Maquadea and Sergio Pellegrino. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. The material fabrication and characterization study presented in this paper was funded by NASA JPL under the SBIR-Phase 1 "Thermally-Stable High Strain Deployable Structures". The material development and manufacture of the Miura-ori composite lamina shown in Figure 1 were done under internal R&D funded by L'Garde, Inc. IM thanks the Fulbright Foundation for financial support.
Accepted Version - Maqueda_2012.pdf