Materials study demonstrates tenfold increase in stiffness for 3D-printed cellular composites, indicating potential for lightweight structural applications.
A new epoxy-based ink is reported, which enables 3D printing of lightweight cellular composites with controlled alignment of multiscale, high-aspectratio fiber reinforcement to create hierarchical structures inspired by balsa wood. Young's modulus values up to 10 times higher than existing commercially available 3D-printed polymers are attainable, while comparable strength values are maintained.
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Compton et al. (2014) studied this question.
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