일축 압축하중 하 다공성 폴리우레탄폼의 재료비선형 거동 및 미세구조 변화
(주)코리아스칼라
- 최초 등록일
- 2023.04.05
- 최종 저작일
- 2017.12
- 7페이지/ 어도비 PDF
- 가격 4,000원
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서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 27권 / 12호
ㆍ저자명 : 이은선, 고태식, 이치승
목차
1. 서 론
2. 실험 방법
2.1 Polyurethane foam sample preparations
2.2 Mechanical testing and analysis
3. 결과 및 고찰
4. 결 론
Acknowledgement
Reference
영어 초록
Porous materials such as polymeric foam are widely adopted in engineering and biomedical fields. Porous materials often exhibit complex nonlinear behaviors and are sensitive to material and environmental factors including cell size and shape, amount of porosity, and temperature, which are influenced by the type of base materials, reinforcements, method of fabrication, etc. Hence, the material characteristics of porous materials such as compressive stress-strain behavior and void volume fraction according to aforementioned factors should be precisely identified. In this study, unconfined uniaxial compressive test for two types of closed-cell structure polyurethane foam, namely, 0.16 and 0.32 g/cm3 of densities were carried out. In addition, the void volume fraction of three different domains, namely, center, surface and buckling regions under various compressive strains (10%, 30 %, 50 % and 70 %) were quantitatively observed using Micro 3D Computed Tomography(micro-CT) scanning system. Based on the experimental results, the relationship between compressive strain and void volume fraction with respect to cell size, density and boundary condition were investigated.
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