Journal of the Korean Society of Clothing and Textiles (한국의류학회지)

The Korean Society of Clothing and Textiles (한국의류학회)
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Compressive Properties of 3D Printed TPU Samples with Various Infill Conditions

채우기 조건에 따른 3D 프린팅 TPU 샘플의 압축 특성

  • Jung, Imjoo (Dept. of Fashion and Textiles, Dong-A University) ;
  • Lee, Sunhee (Dept. of Fashion Design, Dong-A University)
  • 정임주 (동아대학교 의상섬유학과) ;
  • 이선희 (동아대학교 패션디자인학과)
  • Received : 2022.01.10
  • Accepted : 2022.02.24
  • Published : 2022.06.30
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Abstract

This study investigated process conditions for 3D printing through manufacturing thermoplastic polyurethane (TPU) samples under different infill conditions. Samples were prepared using a fused deposition modeling 3D printer and TPU filament. 12 infill patterns were set (2D: grid, lines, zigzag; 3D: triangles, cubic, cubic subdivision, octet, quarter cubic; 3DF: concentric, cross 3D, cross, honeycomb), with 3 infill densities (20%, 50%, 80%). Morphology, actual time/weight and compressive properties were analyzed. In morphology: it was found that, as infill density increased, the increase rate of the number of units rose for 2D and fell for 3DF. Printing time varied with the number of nozzle movements. In the 3DF case, the number of nozzle movements increased rapidly with infill density. Sample weight increased similarly. However, where the increase rate of the number of units was low, sample weight was also low. In compressive properties: compressive stress increased with infill density and stress was high for the patterns with layers of the same shape.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (NRF-2021R1A4A1022059).

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