I didn’t use chopped strands rather than full length fibres. I printed dog - bone specimens adding carbon, glass fibres and also UHMWPE. I paused the printing procedure in order to add the fibre. The final result was a composite specimen, which was later tested using an Instron UMT. Specimens with carbon fibres had the worst behaviour; carbon fibres could easily pull from the printed specimen by hand. GF had the best behaviour followed by UHMWPE. During failure, GF specimens had an explosive behaviour. On the other hand, UHMWPE fibres did not fail and continued to withstand loading after resin rapture. Did not test impact strength yet, but UTS increased by 120% (from 60MPa it reached 135MPa).
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