Effect of 3D printing process parameters on surface and mechanical properties of FDM-printed PEEK

PEEK is difficult to print consistently due to warping and parameter sensitivity. Instead of running 243 full factorial experiments, I used Minitab to design a Taguchi L27 matrix, printed samples on the Intamsys Funmat HT, and analyzed results with MATLAB and Abaqus.

• Applied Minitab Taguchi L27 DOE to reduce experiments from 243 to 27 while still capturing nozzle temp, bed temp, infill %, layer height, and speed

• Printed specimens on Intamsys Funmat HT and analyzed tensile data with MATLAB and ASTM D638 testing protocols

• Identified infill % as dominant (p<0.001), improving tensile modulus by 25% and resilience by 18%