Design and fabrication of capsules with isotropic destruction intensity

등방 파괴 강도를 갖는 캡슐 설계 및 제작

  • 임태욱 (충남대학교, 기계공학과) ;
  • 성호 (충남대학교, 기계공학과) ;
  • 호걸 (충남대학교, 기계공학과) ;
  • 왕수러 (충남대학교, 기계공학과) ;
  • 정원석 (충남대학교)
  • Published : 2022.04.20

Abstract

3D printer-based self-healing capsules have been proposed to heal cracks by enabling various structural designs, repeatable fabrication, and strength analysis of the capsules. The Fusion Deposition Modeling (FDM) method was used to design, analyze, and produce new self-healing capsules that are widely used at low cost. However, PLA extruded from FDM has low interlayer adhesion energy, and thus strength varies depending on the angle of load applied to the laminated layer and the concrete structure, thereby degrading the performance of the self-healing capsule. Therefore, in this paper, the structure of the capsule manufactured by the FDM PLA method has isotropic strength was designed. In addition, the fracture strength in the x, y, and z directions of the load applied through the compression test was analyzed. As a result, it was confirmed that the newly proposed capsule design has an isotropic fracture strength of 1400% in all directions compared to the existing spherical thin-film capsule.

Keywords

Acknowledgement

본 논문은 2022년 한국 연구재단의 기초연구실사업(과제번호: 2020R1A4A3079595)의 일환으로 수행된 연구임을 밝히며 이에 감사를 드립니다.