Earticle

초록

영어

3D printing has the advantage of being able to process various types of parts by layering materials. In addition to these advantages, 3D printing technology allows models to be processed quickly without any special work that can be used in different fields to produce workpieces for various purposes and shapes. This paper deals to not only increase the utilization of 3D printing technology, but also to revitalize 3D printing technology in applications that require similar cryogenic environments. The goal of this study is to identify the mechanical properties of polylactic acid and photopolymer resin processed by Fused Deposition Modeling (FDM) and Digital Light Processing (DLP) respectively. The entire process is meticulously examined, starting from getting the thermal contraction using an extensometer. A uniaxial tensile test is employed, which enables to obtain the mechanical properties of the samples at both room temperature (RT) and cryogenic temperature of 77 K. As the results, photopolymer resin exhibited higher tensile properties than polylactic acid at RT. However, at cryogenic temperatures (77 K), the photopolymer resin became brittle and failure occurred due to thermal contraction, while polylactic acid demonstrated superior tensile properties. Therefore, polylactic acid is more suitable for lower temperatures.

목차

Abstract
1.INTRODUCTION
2. EXPERIMENTAL PROCEDURES
2.1. Samples
2.2. Set-up for thermal expansion measurement at 77 K
2.3. Test procedures for measuring mechanical property at RT and 77 K
3. RESULTS AND DISCUSSION
3.1. Thermal contraction at 77 K
3.2. Mechanical properties of samples at RT and 77 K
4. CONCLUSIONS
ACKNOWLEDGMENT
REFERENCES

키워드

저자

• Richard G. Pascua [ Department of Mechanical Design Engineering, Andong National University, Andong, 36729 Korea ]
• Gellieca Dullas [ Department of Mechanical Design Engineering, Andong National University, Andong, 36729 Korea ]
• SangHeon Lee [ Department of Mechanical Design Engineering, Andong National University, Andong, 36729 Korea ] Corresponding Author
• Hyung-Seop Shin [ Department of Mechanical Design Engineering, Andong National University, Andong, 36729 Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537