Stamp forming of complex structures in continuous fiber reinforced thermoplastic composites (CFRTPs) poses intricate molding challenges, particularly in surface quality maintenance. Dry spot defects, prevalent in such structures significantly compromise part rigidity, posing a pressing challenge in CFRTPs’ practical application. This study focuses on multi-prismatic array structures, proposing a method to mitigate these defects in CFRTPs stamp forming. Forming simulations revealed the underlying causes of dry spot formation, leading to the optimization of two critical structural parameters: the chamfer radius (R) and the draft angle (θ). Simulation results indicated a substantial reduction in dry spot area, decreasing from 10 % to 0.28 % after optimization. Subsequent forming experiments confirmed the effectiveness of this approach, yielding multi-prismatic array samples with minimal dry spot. This strategy presents a novel and efficient means to address dry spot defects in complex CFRTPs parts stamp forming. © 2024 The Society of Manufacturing Engineers
Pour en savoir plus : Optimizing surface quality in thermoplastic composites: A novel approach to mitigate dry spot defects in multi-prismatic array stamping