Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Investigation of Temperature-Dependent Microscopic Morphological Variation of PEEK Powder for a 3D Printer using Dissipative Particle and Molecular Dynamics Simulations

소산입자동역학과 분자동역학을 이용한 3D 프린터용 PEEK 분말에 대한 온도에 따른 미시적 구조변화에 대한 연구

  • Kim, Namwon (Ingram School of Engineering, Texas State University) ;
  • Yi, Taeil (Department of Mechanical Engineering, Kyungnam University)
  • 김남원 (텍사스주립대학교 공학부) ;
  • 이태일 (경남대학교 기계공학부)
  • Received : 2018.07.26
  • Accepted : 2018.08.23
  • Published : 2018.10.31
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Abstract

3D printing technology and its applications have grown rapidly in academia and industry. We consider a 3D printing system designed for the selective laser sintering (SLS) method, which is one of the powder bed fusion (PBF) techniques to build up the final product by layering sintered powder slices. Thermal distortion of printing products is a critical challenge in 3D printing. This study investigates temperature-dependent conformational behaviors of 3D printed samples of sintered poly-ether-ether-ketone (PEEK) powders using molecular dynamics simulations. The wear and chemical resistance properties of PEEK are understood, as it is a well-known biocompatible material used for implants. However, studies on physical phenomena at nanoscale in PEEK are rarely published in public. We simulate dissipative particle dynamics to elucidate how a cavity regime forms in PEEK at different system temperatures. We demonstrate how PEEK structures deform subject to the system temperature distribution.

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References

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