加载速率对气泡冰块和透明冰块典型机械特性影响的对比实验研究

IF 2.8 2区 工程技术 Q2 ENGINEERING, MECHANICAL Experimental Thermal and Fluid Science Pub Date : 2024-07-06 DOI:10.1016/j.expthermflusci.2024.111264
Keke Shao, Zekang Zhen, Runmiao Gao, Mengjie Song, Long Zhang, Xuan Zhang
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引用次数: 0

摘要

结冰是一种常见的液固相变过程,通常会产生负面影响。由于空气在冰中的溶解度明显低于在水中的溶解度,因此冰中会形成气泡,这些气泡会影响冰块的机械性能。为了定量研究气泡对冰块机械强度的影响,我们建立了一个实验装置,探索不同加载速率下透明冰块和气泡冰块的机械强度和模量。结果表明,即使冰块中气泡的体积分数低至 1.98%,也会对其机械性能产生显著影响。气泡对拉伸、压缩和弯曲强度的削弱几乎小于 20%,而气泡对剪切强度的削弱几乎达到 60%。气泡对四种典型机械模量的影响不超过 20%。这项研究有助于优化除冰技术,也为制冰提供了方法和思路。
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Comparative experimental study of the effect of loading rate on the typical mechanical properties of bubble and clear ice cubes

Icing is a common liquid–solid phase change process that usually has negative effects. Bubbles will form in ice since air is significantly less soluble in ice than it is in water and these bubbles will affect the mechanical properties of ice cubes. To quantitatively investigate the effect of air bubbles on the mechanical strength of ice cubes, an experimental setup is built to explore the mechanical strength and modulus of clear and bubble ice cubes at different loading rates. The results show that even a low volume fraction of air bubbles in the ice cubes as low as 1.98% can have a significant effect on their mechanical properties. The weakening of tensile, compressive and bending strengths by air bubbles is almost less than 20%, while the weakening of shear strength by air bubbles reaches almost 60%. The effect of air bubbles on the four typical mechanical moduli does not exceed 20%. This research helps to optimize the de-icing technique and also provides methods and ideas for preparing ice.

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来源期刊
Experimental Thermal and Fluid Science
Experimental Thermal and Fluid Science 工程技术-工程:机械
CiteScore
6.70
自引率
3.10%
发文量
159
审稿时长
34 days
期刊介绍: Experimental Thermal and Fluid Science provides a forum for research emphasizing experimental work that enhances fundamental understanding of heat transfer, thermodynamics, and fluid mechanics. In addition to the principal areas of research, the journal covers research results in related fields, including combined heat and mass transfer, flows with phase transition, micro- and nano-scale systems, multiphase flow, combustion, radiative transfer, porous media, cryogenics, turbulence, and novel experimental techniques.
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