Multiscale reduced-order modeling of fused filament fabricated composites
Abstract
Defects such as voids are observed at multiple length scales of an additively manufactured composite material. Modeling such defects and their multiscale interaction is crucial for the materials performance prediction. In this work, we study as-built defects in fused filament fabricated Polycarbonate/Short Carbon Fiber (PC/SCF) composite samples. The microscale and mesoscale voids along with the mesoscale layer orientations have been studied using a mechanistic reduced-order model. Our result indicates that the microscale intrabead voids interact with the mesoscale interbead voids and significantly degrade the mechanical response of the printed composites compared to the microscale microstructure without voids. The mesoscale layer orientations also influence the stress-strain response and show better performance when the load is applied to the bead direction.
Used in syntheses
Questions this source addresses
- How can we make structural color on a large scale?
- How closely can we copy the color-making structures found in nature?
- What tiny shapes can make colors out of light?
- Where do colors come from when there is no pigment?
- How do microscale intrabead voids and mesoscale interbead voids interact to degrade the mechanical performance of FDM-printed carbon fiber composites?
- What kind of reduced-order model can capture void defects across microscale and mesoscale length scales in additively manufactured composites?
- Why do FDM-printed carbon fiber composite parts underperform relative to injection-molded equivalents made from the same material system?
- Why does mesoscale layer orientation matter for the stress-strain response of printed polycarbonate/short carbon fiber composites?