Data for Criticality of Flaws on the Tensile and Short-Beam Strength of Additively Manufactured Continuous Carbon Fibre Composites
Description
The data provided in this repository are the results of the method carried out in " Criticality of Flaws on the Tensile and Short-Beam Strength of Additively Manufactured Continuous Carbon Fibre Composites". Full details on printer, print parameters, and the design of experiments applied to this data collection are provided in the paper. All specimens were printed on a Markforged FX10 printer using Continuous Carbon Fibre Filament (CFF) as the primary infill material and Onyx (Short-fibre reinforced Nylon-6) for walls and supports. The specimens for tensile testing were produced and tested according to ASTM D3039M and utilised fibreglass end tabs to minimise grip failure. Short-beam test specimens were fabricated and tested in accordance with ASTM D2344. The tensile and short-beam strength results comprise a full factorial design of experiments that considers two print configurations (XY and XZ), two configurations of contour offset short-fibre reinforced Nylon-6 (PA6) walls and four flaw types. The strength for each combination of print orientation and walls without an intentional flaw indicates the nominal properties of the material. The three flaw types tested are a 24-hour pause at the mid-layer of the print, a soft short-fibre reinforced PA6 layer at the mid-layer of the print, and a CAD-seeded void. The three flaws show varying impact on tensile and short-beam strength depending on the configuration of print orientation and use of walls. For example, the CAD-seeded void is expected to cause a significant decrease in tensile strength, but in some cases leads to a measured UTS within the range of experimental variance for non-flawed equivalent specimens. On the other hand, the 24-hour pause caused tensile strength to reduce measurably for all XY-oriented specimens. This configuration-dependency signifies that process parameter sensitivity is a serious challenge for continuous fibre material extrusion utilisation in industrial applications and may benefit from improved QA standardisation.
Files
Institutions
- RMIT UniversityVictoria, Melbourne