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http://dx.doi.org/10.26748/KSOE.2018.068

Effect of Repetitive Impacts on the Mechanical Behavior of Glass Fiber-reinforced Polyurethane Foam  

Kim, Myung-Sung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Jeong-Hyeon (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Kim, Seul-Kee (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Lee, Jae-Myung (Department of Naval Architecture and Ocean Engineering, Pusan National University)
Publication Information
Journal of Ocean Engineering and Technology / v.33, no.1, 2019 , pp. 85-91 More about this Journal
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.
Keywords
Glass fiber-reinforced polyurethane foam; Impact load; Repetitive impact; Mechanical behavior; Impact behavior;
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Times Cited By KSCI : 1  (Citation Analysis)
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