얼음의 압축 파괴 시험 및 해석 기법 개발

Abstract

Extreme air temperature and thick ice sheet are technically the most important barrier to explore and develop the Arctic. Especially, ships and offshore structures operating in the Arctic Ocean are threatened with thick ice sheet and huge icebergs. The damage extent of the structure and the ice failure mode dramati-cally depend on collision scenario between the structure and ice, and little research has been done on the com-pressive failure test of ice. In this study, the compression test of ice was carried out with EG/AD model ice, which is used in KRISO ice model basin. A compression test apparatus having a cryogenic chamber falling down to -150 ℃ was newly prepared. The ice crushing modes according to the collision scenario were measure with high-speed cameras and an image visualization technique, but also some influencing factors af-fecting the ice failure were analyzed. Finally, the analysis method of ice breaking mode using image visualiza-tion technique is introduced in this study.