반복 충격이 유리섬유 강화 폴리우레탄 폼의 기계적 성능에 미치는 영향
Effect of Repetitive Impacts on the Mechanical Behavior of Glass Fiber-reinforced Polyurethane Foam
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초록
In a cryogenic storage structure, the insulation system is in an environment in which fluid impact loads occur throughout the lifetime of the structure. In this study, we investigated the effect of repetitive impact loading on the mechanical performance of glass fiber-reinforced polyurethane foam. The repeated impact loading test was conducted in accordance with the required impact energy and the required number of repetitive impacts. The impact behavior of glass fiber-reinforced polyurethane foam was analyzed in terms of stress and displacement. After the impact test, the specimen was subjected to a compression test to evaluate its mechanical performance. We analyzed the critical impact energy that affected mechanical performance. For the impact conditions that were tested, the compressive strength and elastic modulus of the polyurethane foam can be degraded significantly.
Abstract
In a cryogenic storage structure, the insulation system is in an environment in which fluid impact loads occur throughout the lifetime of the structure. In this study, we investigated the effect of repetitive impact loading on the mechanical performance of glass fiber-reinforced polyurethane foam. The repeated impact loading test was conducted in accordance with the required impact energy and the required number of repetitive impacts. The impact behavior of glass fiber-reinforced polyurethane foam was analyzed in terms of stress and displacement. After the impact test, the specimen was subjected to a compression test to evaluate its mechanical performance. We analyzed the critical impact energy that affected mechanical performance. For the impact conditions that were tested, the compressive strength and elastic modulus of the polyurethane foam can be degraded significantly.
참고문헌 (14)
- ASTM, "Standard Test Method for Compressive Residual Strength Properties of Damaged Polymer Matrix Composite Plates. D7137", D7137M-05, 2005
- Denay, A. G., "Compression Behavior of Glass-fiber-reinforced and Pure Polyurethane Foams at Negative Temperatures Down to Cryogenic Ones", Journal of Cellular Plastics, 49(3), pp.209~222 (2013)[DOI]
- Desai, S., "Effect of Polyols and Diisocyanates on Thermo-mechanical and Morphological Properties of Polyurethanes", European Polymer Journal, 36(4), pp.711~725 (2000)[DOI]
- Graczyk, M., "A Probabilistic Assessment of Design Sloshing Pressure Time Histories in LNG Tanks", Ocean Engineering, 35(8-9), pp.834~855 (2008)[DOI]
- Harris, F. S., "Safety Features on LNG Ships", Cryogenics, 33(8), pp.772~777 (1993)[DOI]
- Jang, B. P., "Impact Behavior and Impact-fatigue Testing of Polymer Composites", Composites Science and Technology, 44(2), pp.107~118 (1992)[DOI]
- 정광영, "동일 충격 에너지 조건하에서 다공질 고분자의 충격거동에 관한 연구", Composites Research, 22(4), pp.27~32 (2009), 한국복합재료학회
- Lee, C. S., "Failure Analysis of Reinforced Polyurethane Foam-based LNG Insulation Structure Using Damage-coupled Finite Element Analysis", Composite Structures, 107, pp.231~245 (2014)[DOI]
- Lee, C. S., "A Temperature- and Strain-rate-dependent Isotropic Elastoviscoplastic Model for Glass-fiber-reinforced Polyurethane Foam", Materials and Design, 84, pp.163~172 (2015)[DOI]
- Lim, G. T., "Understanding the Compressive Behavior of Linear and Cross-linked Poly(Vinyl Chloride)Foams", Journal of Cellular Plastics, 45(5), pp.419~439 (2009)[DOI]
- Park, S. B., "Effect of the Blowing Agent on the Low-Temperature Mechanical Properties of CO2- and HFC-245fa-blown Glass-fiber-reinforced Polyurethane Foams", Composites Part B : Engineering, 93, pp.317~327 (2016)[DOI]
- Park, S. B., "Polymeric Foams for Cryogenic Temperature Application: Temperature Range for Non-recovery and Brittlefracture of Microstructure", Composite Structures, 136, pp.258~269 (2016)[DOI]
- Pellegrino, A., "The Mechanical Response of a Syntactic Polyurethane Foam at Low and High Rates of Strain", International Journal of Impact Engineering, 75, pp.214~221 (2015)[DOI]
- Petit, S., "Impact and Compression After Impact Experimental Study of a Composite Laminate With a Cork Thermal Shield", Composites Science and Technology, 67(15-16), pp.3286~3299 (2007)[DOI]