DUAL-AXIS VIDEO OBSERVATIONS OF ICE CRUSHING UTILIZING HIGH-SPEED VIDEO FOR ONE PERSPECTIVE

机译：利用高速视频在一个角度看冰的双轴视频观察

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Rectangular thick sections (1 cm thickness) of lab-grown monocrystalline ice have been confined between two thick Plexiglas plates and crushed at -10℃ from one edge face at a rate of 1 cm/s using a transparent Plexiglas platen (1 cm thickness) inserted between the plates. The transparent plates and platen permitted side viewing of the ice behavior during crushing using high-speed video and also a top view of the ice/platen contact zone through the crushing platen using regular video. Zones of intact ice at the ice / platen interface were evident in the visual records and these were shaped by cracks and spalls. The production and flow of liquid in a thin layer at the intact ice / platen interface was also evident. A novel method was used to obtain pressure measurements at the ice/platen interface. Pressure values for the intact ice contact zones were high (at least 30 MPa) and for the crushed ice the pressure varied from low (< 5 MPa) to high values (～ 30 MPa) depending on its thickness over intact ice. Also, wetting from liquid produced at the intact ice / platen interface probably softened and reduced the pressure in pulverized ice. Features of the load and pressure data are discussed in the context of the visual observations.

机译：将实验室生长的单晶冰的矩形厚部分（厚度为1 cm）限制在两个厚的Plexiglas板之间，并使用透明的Plexiglas压板（厚度为1 cm）以1 cm / s的速度从一个边缘面以-10℃的速度压碎。插入板之间。透明板和压板允许使用高速视频从侧面观察碎冰过程中的冰行为，也可以使用常规视频通过压板从冰/压板接触区域俯视图。在视觉/视觉记录中，在冰/压板界面处完整的冰区很明显，这些区由裂缝和剥落形成。在完整的冰/压板界面处的薄层中，液体的产生和流动也很明显。一种新颖的方法被用来获得冰/台板界面处的压力测量值。完整冰接触区的压力值较高（至少30 MPa），对于碎冰，压力根据其在完整冰层上的厚度，从低（<5 MPa）到高值（〜30 MPa）不等。同样，在完整的冰/压板界面处产生的液体的润湿可能会软化并降低粉状冰中的压力。载荷和压力数据的特征将在视觉观察的背景下进行讨论。

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来源
《International Conference on Port and Ocean Engineering under Arctic Conditions(POAC'05) vol.1; 20050626-3002; Potsdam,NY(US)》|2005年|P.271-281|共11页
会议地点 PotsdamNY(US)
作者
R.E. Gagnon; Claude Daley;
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Institute for Ocean Technology National Research Council of Canada St. John's, NL, Canada, A1B 3T5;

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原文格式 PDF
正文语种 eng
中图分类港口工程;海洋工程;
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DUAL-AXIS VIDEO OBSERVATIONS OF ICE CRUSHING UTILIZING HIGH-SPEED VIDEO FOR ONE PERSPECTIVE

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