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[학술저널]

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황병관(부산대학교) 김정현(부산대학교) 김정대(부산대학교) 이제명(부산대학교)

DOI : 10.3744/SNAK.2019.56.4.291

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초록

Polyurethane foam is the most efficient, high-performance insulation material, used for liquefied natural gas carrier (LNGC) insulation. Because LNGC is exposed to sloshing impact load due to ship motion of 6 degrees of freedom, polyurethane foam should be sufficient dynamic properties. The dynamic properties of these polyurethane foam depends on temperature and density. Therefore, this study investigates the dynamic response of polyurethane foam for various temperature(25℃, -70℃, -163℃) and density(90kg/㎥, 113kg/m3, 134kg/㎥, 150kg/㎥) under drop impact test with impact energy of 20J, 50J, and 80J. For dynamic response was evaluated in terms of peak force, peak displacement, absorb energy, and the mechanical property with minimized density effects. The results show the effect of temperature and density on the polyurethane foam material for the dynamic response.

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1. 서론
2. 실험
3. 실험 결과 및 분석
4. 결론
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