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Thursday, June 3 • 12:50 - 13:15
Rapid Microwave Additive Manufacturing of Continuous Carbon Fiber Reinforced Bionic Plastics

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  • Resonant microwave applicator
  • Microwave additive manufacturing temperature control
  • Load-dependent printing path planning

Continuous carbon fibers are promising reinforcement materials to improve the stiffness, strength properties and design ability of 3D printed polymer parts. However, current additive manufacturing method, also known as 3D printing, have a limited and slow printing speed because of the intrinsic slow and contact needed heat transfer disadvantages of the traditional resistive heating approach. We present a 3D microwave printing method by using the microwave for instantaneous and volumetric heating the continuous carbon fiber reinforced polymer (CCFRP) filament. Moreover, carbon fiber reinforced polymer composites with bionic shape can be printed without the limitation of classic forming tools and complicated multi-steps preparation. This technology allows fabricating bionic CCFRP components with much higher speed compare with the traditional 3D printing technologies. A small-size resonant microwave applicator has been designed and manufactured to heat the CCFRP filament efficiently. The relationship between the printing speed and microwave power is established for precise  control of the printing temperature. A prediction-model and step-PID based temperature control strategy is developed to adapt the variable printing speed during the 3D microwave printing process. Furthermore, a novel 3D path planning method is proposed to pave the continuous carbon fibers along the load transmission paths of the bionic CCFRP under certain load conditions. This technology solves the key problems of 3D microwave printing of continuous carbon fiber reinforced bionic composites and is the next-generation manufacturing approach for the high-performance and complex bionic composite components.

Speakers, Jury Members & Final...
avatar for Nanya LI

Nanya LI

Alexander von Humboldt Postdoctoral Researcher, Karlsruhe Institute of Technology
Nanya Li, Alexander von Humboldt postdoctoral researcher at Karlsruhe Institute of Technology, received his PhD from Nanjing University of Aeronautics and Astronautics in 2017. He has published 20 papers, 26 granted Chinese patents and 1 issued international patent covering 3D microwave... Read More →

Thursday June 3, 2021 12:50 - 13:15 CEST
Conferences (Hall 6 - Room 611)