2 results
Search Results
Now showing 1 - 2 of 2
Item Process Optimization of 3D Printing with Continuous Fiber Reinforced UV Curable Thermoset Resin(North Dakota State University, 2022) Rahman, Md Atikur3D printed polymer components cannot be used as structural components due to the 3D printable material property limitations. To improve mechanical properties, a composite 3D printer is developed and studied. Technical aspects of 3D printing with continuous carbon fiber reinforced dual UV and thermal curable thermoset composite were experimented. To optimize the 3D printing process parameters, the effect of printing nozzle size, line spacing of the print, and resin flow rate was studied. To achieve minimum void content and maximum fiber volume fraction, print parameter configurations were studied using microscopic surface roughness analysis. The tensile and flexural properties of 3D printed specimens were tested. Results of the study indicated that impressive mechanical properties of the 3D printed continuous fiber reinforced UV curable thermoset composite can be achieved through the optimization of printing parameters.Item Additive manufacture of advanced composites using reactive resins and continuous carbon fiber(North Dakota State University, 2024) Aryal, BibekTo overcome the significant limitations such as slow processing times, substantial energy needs of conventional additive manufacturing technology, reactive extrusion additive manufacturing (REAM) process was developed. As printed objects with neat reactive resin exhibited insufficient mechanical performance for advanced application, continuous fiber reinforcement is an effective route to improve mechanical performances. Continuous carbon fiber reinforced 3D printing was performed using a commercially available reactive resin system and an experimentally synthesized one at NDSU. The mechanical properties of the printed carbon fiber reinforced samples were compared with the neat resin samples. The tensile strength of printed sample using Pentaerythritol-xylendiamine resin system increased by 217% with 2.88% carbon fiber content. Similarly tensile strength of Epon-Epikure sample increased by 151% with the fiber-volume fraction of 4.4%. Therefore, reinforcement with continuous carbon fiber has potential to overcome the barrier of low mechanical strength exhibited by neat reactive resin system.