| 谭新韵,沈丽骊,孙晨*.基于数字图像相关法的透明液滴形貌测量方法[J].实验力学,2024,39(1):7~16 |
| 基于数字图像相关法的透明液滴形貌测量方法 |
| Transparent droplet surface morphology measurement method based on digital image correlation |
| 投稿时间：2023-05-06 修订日期：2023-07-04 |
| DOI：10.7520/1001-4888-23-093 |
| 中文关键词: 液滴 三维形貌 数字图像相关 全场测量 |
| 英文关键词:droplets three-dimensional surface topography digital image correlation full-field measurement |
| 基金项目:国家自然科学基金项目(12272227) |
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| 摘要点击次数: 2707 |
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| 中文摘要: |
| 对固体表面液滴形貌的测量与分析是探究固-液相互作用、表面性能表征中的重要环节。然而,透明液滴通常在光学系统中难以成像,从而为其全场形貌测量带来了极大困难。为此,本文提出了一种透明液滴三维形貌测量方法,以液滴诱发图像位移结合折射成像规律实现液滴形貌的测量。首先,通过数字图像相关法测量液滴导致的固体表面图像位移；其次,建立基于折射成像的物理模型,确立图像位移与液面高度之间的关系；最后,由实验测量到的图像位移,结合物理模型求解液面高度,实现液滴三维形貌的重建。实验结果表明,所提出的方法能够准确地测量固体表面的液滴三维形貌,并且适用于不规则液面的测量。 |
| 英文摘要: |
| The measurement and analysis of the morphology of liquid droplets on solid surfaces is an important step in exploring solid-liquid interactions and characterizing surface properties. However, transparent droplets are often challenging to image in optical systems, making full-field morphology measurements difficult. This paper presented a novel method for measuring the three-dimensional (3D) morphology of transparent liquid droplets by exploiting the displacement of the droplet-induced image and the imaging principle of refraction. Specifically, the proposed method involved using digital image correlation (DIC) technology to measure the image displacement caused by the droplet on the solid surface. A physical model based on refraction imaging was then established to relate the measured image displacement to the height of the liquid surface. Finally, the height of the liquid surface was determined by solving the measured image displacement, enabling the reconstruction of the 3D morphology of the droplet. Experimental results demonstrate that the proposed method is capable of accurately measuring the 3D morphology of liquid droplets on solid surfaces, even for irregular liquid surfaces. This technique provides valuable technical support for investigating droplet spreading, evaporation, and other related behaviors. |
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