Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Observations on Dimension Change of Segmented 3D Printing Human Manikin Parts for Optimal Combination

분할 출력된 인체 마네킨 3D 프린팅 조각 간의 최적 결합을 위한 치수변화 고찰

  • Jung, Jin Young (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Park, Yu Jin (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Lim, Jeong Woo (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Park, Dan Bi (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Lee, Sang Min (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Kwon, Ji Eun (Department of Materials Design Engineering, Kumoh National Institute of Technology) ;
  • Sul, In Hwan (Department of Materials Design Engineering, Kumoh National Institute of Technology)
  • 정진영 (금오공과대학교 소재디자인공학과) ;
  • 박유진 (금오공과대학교 소재디자인공학과) ;
  • 임정우 (금오공과대학교 소재디자인공학과) ;
  • 박단비 (금오공과대학교 소재디자인공학과) ;
  • 이상민 (금오공과대학교 소재디자인공학과) ;
  • 권지은 (금오공과대학교 소재디자인공학과) ;
  • 설인환 (금오공과대학교 소재디자인공학과)
  • Received : 2022.01.25
  • Accepted : 2022.02.22
  • Published : 2022.04.30
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Abstract

Large objects, such as human-shaped manikins, need to be segmented for three-dimensional (3D) printing, and then glued. This paper presents quantitative and experimental results on filament dimension changes to show whether segmented parts can be combined using location-fit or magnets. Two kinds of filaments, poly lactic acid (PLA) and thermoplastic polyurethan (TPU), are used in the 3D printing of two types of test structures, a hole/shaft structure and a magnet-in-hole structure. Both horizontal and vertical filament dimension changes are measured. It was found that the hole sizes should be expanded to reflect the expansion of the wall thickness in the horizontal direction. In the vertical direction, the stacking of filament layers slightly reduced the total height. In particular, we derive an equation that can explain why the minimal thickness from slicing software g-code generation varied depending on the object inclination angle. Finally, the equation results are compared with those of slicing software.

Keywords

Acknowledgement

이 연구는 한국연구재단 일반연구자지원사업에 의하여 지원된 논문임(NRF-2019R1F1A1040883).

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