Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Study on Low Temperature Environmental Characteristics of Sandwich Core Made with 3D Printer

3D 프린터로 제작한 샌드위치 코어의 저온 환경 특성 연구

  • Ahn, Ju-Hun (Department of Aerospace Engineering, Chosun University) ;
  • Choi, Ju-Hwan (Department of Aerospace Engineering, Chosun University) ;
  • Hong, Seung-Lae (Department of Naval Architecture & Ocean Engineering, Chosun University) ;
  • Lee, Chang-Yull (Department of Aerospace Engineering, Chosun University)
  • 안주훈 (조선대학교 항공우주공학과) ;
  • 최주환 (조선대학교 항공우주공학과) ;
  • 홍승래 (조선대학교 선박해양공학과) ;
  • 이창열 (조선대학교 항공우주공학과)
  • Received : 2018.11.27
  • Accepted : 2019.06.25
  • Published : 2019.08.31
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Abstract

Studies on the fabrication of UAV by using 3D printer have been actively carried out. However, research on structural load characteristics in low temperature environment is insufficient. In this study, a composite sandwich structure with ordinary orbs structure was proposed, and the load characteristics for temperature condition changes were analyzed. The ordinary orbs and honeycomb structures were fabricated by using a FDM type 3D printer. The bending load test was carried out at room temperature and low temperature condition. The low temperature condition was classified into four cases. Bending load tests were performed in a low temperature chamber to maintain the required temperature conditions. As a result of the test, it was confirmed that the proposed ordinary orbs structure had better load characteristics at low temperatures than the existing honeycomb structure.

3D 프린터를 이용한 무인기 제작에 대한 연구는 활발하게 진행되고 있으나, 저온 환경에서의 구조물 하중특성에 관한 연구는 부족한 상황이다. 본 연구에서는 정상원형그물 구조를 가진 복합재 샌드위치 구조물을 제안하여 온도 조건 변화에 대한 하중특성을 분석하였다. 정상원형그물 구조 및 허니콤 구조는 FDM 방식의 3D 프린터를 이용하여 제작하였다. 굽힘 하중 시험은 상온 및 저온 조건에서 수행하였다. 요구되는 온도 조건을 유지하기 위해서 저온 챔버 안에서 하중시험을 수행하였다. 시험 결과, 제안된 정상원형 그물 구조는 기존의 허니콤 구조에 비하여 저온에서의 하중 특성이 우수함을 확인하였다.

Keywords

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