Properties and role of interfaces in multimaterial 3D printed composites.

ABSTRACT: In polyjet printing photopolymer droplets are deposited on a build tray, leveled off by a roller and cured by UV light. This technique is attractive to fabricate heterogeneous architectures combining compliant and stiff constituents. Considering the layer-by-layer nature, interfaces between different photopolymers can be formed either before or after UV curing. We analyzed the properties of interfaces in 3D printed composites combining experiments with computer simulations. To investigate photopolymer blending, we characterized the mechanical properties of the so-called digital materials, obtained by mixing compliant and stiff voxels according to different volume fractions. We then used nanoindentation to measure the spatial variation in mechanical properties across bimaterial interfaces a

SUBMITTER: Zorzetto L 

PROVIDER: S-EPMC7747733 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature