Short fiber reinforced 3d printed ceramic composite with shear induced alignment

Abstract

This paper accounts for utilization of shear induced alignment method during ceramic stereolithography. Lateral oscillation mechanism, combined with 3d printed wall pattern, was employed to generate necessary shear to align fiber in desired direction. First, semicircular channel pattern was printed to assess the effect of difference between wall direction and oscillation direction on the fiber alignment. Then, flexural strength of ceramic matrix was tested with nickel coated carbon fiber and ceramic fiber reinforcements. The results demonstrated that the shear induced alignment further improves the flexural strength compare to randomly distributed samples. Flexural strength of aligned samples with 1.0 wt% carbon fiber loading was improved by ~90% compared to randomly orientated samples and by ~333% compared to unreinforced samples. Finally, fracture surface morphology of the flexural strength test specimens was evaluated. The main fracture mechanism was observed as fiber pull-out.

Review on process model, structure-property relationship of composites and future needs in fused filament fabrication

“…As a continuation, Yunus et al. 41 later investigated the short fiber reinforcement on flexural properties. The results yielded an increase in flexural strength by ∼90% with aligned CFs as compared to randomly oriented CFs and by ∼333% compared to unreinforced samples.…”

“…The alignment was calculated in terms of orientationtensor, and the results showed an approximate increase in tensile strength by 28% with the alignment of nanofibers. As a continuation, Yunus et al 41 later investigated the short fiber reinforcement on flexural properties. The results yielded an increase in flexural strength by $90% with aligned CFs as compared to randomly oriented CFs and by $333% compared to unreinforced samples.…”

“…In the second stage, the fluid comes out of the nozzle as a fully melted form, swells due to sudden pressure change, gets deposited on a platform, and starts solidifying due to the temperature difference. This stage is crucial as it defines the shape of the extruded bead, inter-bead bonding, residual stresses, 38 and shear-induced alignment 40,41 of reinforcing materials.…”

Reinforced 3D Composite Structures of γ-, α-Al2O3 with Carbon Nanotubes and Reduced GO Ribbons Printed from Boehmite Gels

“…In the case of 3D-printed ceramics, the use of fibers is beginning to be explored, displaying significant results in improving the flexural and compressive strength of the scaffolds. Some examples that demonstrate this mechanical enhancement are the manufacturing of reinforced SiC/carbon fiber [ 15 ] and tricalcium phosphate/boron nitride nanotubes [ 16 ] composites by selective laser sintering, the fabrication of aligned carbon fibers into silica composites by stereolithography [ 17 ], and zeolite/halloysite nanotubes structures obtained by DIW [ 18 ].…”

High Purity and High Density Ti3SiC2/Al2O3 Composites Were Prepared at High Temperature

“…The dislocation slip and deformation are hard to come into being when the ceramic material to be stressed, therefore, the ceramic materials will instantaneously rupture, it is the reason why ceramic materials are brittle [4][5]. Therefore, ceramics are mostly compounded with ductile bers, ductile metal materials or polymer materials with excellent plasticity [6][7][8][9].…”