一种低温强制振荡装置,用于测量冰的无弹性
Hatsuki Yamauchi1, Christine McCarthy1, John R Leeman2
1Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York 10964, USA.
The Review of scientific instruments
|July 19, 2024
概括
一个新的冷装置测量了冰.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 冰川学的冰川学
背景情况:
- 冰的无弹性行为对于理解其机械性质至关重要.
- 之前的设备限制阻碍了低温测量.
研究的目的:
- 开发和验证一种新的冷单轴强制振荡装置.
- 在低温下测量冰的无弹性特性 (模和衰减).
主要方法:
- 一种高精度装置适应冷条件的调整.
- 在广的频率范围 (10-4到10 Hz) 中测量扬模和衰减.
- 使用标准材料 (钢弹,不钢,烯酸) 进行校准和数据校正.
主要成果:
- 通过与公布的烯酸样本数据达成协议来验证的设备.
- 对多晶冰的初步数据显示线性无弹性反应.
- 冰的衰减数据与多晶材料的麦克斯韦频率缩放保持一致.
结论:
- 新的冷装置可靠地测量冰的无弹性.
- 在小压力条件下,冰表现出线性无弹性行为.
- 该装置可以对冰的无弹性性质进行系统研究.
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