Combining Additive Manufacturing for High-Performance Composite Stiffened Panels Manufacturing

We combined laser-assisted insitu consolidation tape laying and fused filament fabrication to manufacture in three stages a 100% thermoplastic stiffened panels with innovative designs using LMPAEK-PEKK carbon fiber reinforced polymers. Overprinting of gyroid structures on top of ATL laminates assisted by laser shown very good adhesion. Mechanical characterization by flatwise and four point bending tests show tensile strength in the range of 10MPa (flatwise) and 889MPa (four-point bending). Tomography analysis shows the optimization roadmap to enhance mechanical properties by improving temperature management during manufacturing.