Impact experiments on sintered snowballs

焼結雪玉の衝突実験

嶌生 有理*; 荒川 政彦*; 保井 みなみ

Shimaki, Yuri*; Arakawa, Masahiko*; Yasui, Minami

強度と破砕速度における焼結の影響を調べるために焼結雪玉の衝突実験を行った。40%の多孔体を持つ氷と雪の衝突を研究した。焼結の持続時間を1時間から1か月まで調査し、種々の条件の強度について0.2のべき乗の関係が存在することを発見した。

Impact disruption of sintered snowballs was studied to clarify the effect of sintering on impact strength and fragment velocity. Ice and snow projectiles were impacted on sintered snowballs with a porosity of 40%. The sintering duration of snow was changed from 1 hour to 1 month, and the effect of sintering on impact strength and static strength were examined. As a result, it was found that both impact strength and static strength of snow have a power law relationship to a sintering duration with a power law index of about 0.2.