Yanagi Satoshi, Kameda Takao, Harada Yasuhiro, Sado Kimiteru
Hokkaido Kushiro Meiki Senior High School, 1-38-7 Aikoku-nishi, Kushiro, Hokkaido, 085-0057, Japan.
Snow and Ice Research Laboratory, Kitami Institute of Technology, 165 Koencho, Kitami, Hokkaido, 090-8507, Japan.
Sci Rep. 2024 May 20;14(1):11463. doi: 10.1038/s41598-024-62247-0.
The shape of pebbles on a curling rink was measured using a replica of the ice surface of the rink to understand the characteristics of pebbles after being in contact with stones. We focused on pebbles with flat tops for which the average shape was 3.81 mm in diameter at the lower base, 1.16 mm in diameter at the upper surface, 0.12 mm in maximum height, and 5.4° in contact angle. A scratch of about 1 µm in depth and 40 µm in width (traces of pebbles cut by a running band at the bottom of the stone) was observed on the upper surface. The pebbles were also found to have a moderate lower base diameter that preferentially contacted the nipper or stone due to its large maximum height value immediately after formation. Experiments to determine the amount of pebble abrasion associated with the passing of stones revealed that the average height of their upper surface decreased by 1 µm and the area of the upper surface increased by 0.21 mm for each stone passing as the stone cut the pebbles.
通过使用冰壶场地冰面的复制品来测量冰壶场地内鹅卵石的形状，以了解鹅卵石与冰壶石接触后的特性。我们重点研究了顶部平坦的鹅卵石，其平均形状为：下底部直径3.81毫米，上表面直径1.16毫米，最大高度0.12毫米，接触角5.4°。在上表面观察到一条深度约为1微米、宽度为40微米的划痕（冰壶石底部运行带切割鹅卵石的痕迹）。还发现这些鹅卵石具有适中的下底部直径，由于其形成后立即具有较大的最大高度值，因此优先与夹钳或冰壶石接触。确定与冰壶石通过相关的鹅卵石磨损量的实验表明，随着冰壶石切割鹅卵石，每块冰壶石通过时，其上表面的平均高度下降1微米，上表面面积增加0.21平方毫米。
