| 朱奇,郝文峰,陈雷,朱建国*,何广龙.微尺度散斑制备方法研究及应用进展评价[J].实验力学,2018,33(1):77~84 |
| 微尺度散斑制备方法研究及应用进展评价 |
| On the fabrication method of micro-scale speckle and evaluation of its application progress |
| 投稿时间：2017-05-29 修订日期：2017-08-05 |
| DOI：10.7520/1001-4888-17-120 |
| 中文关键词: 数字图像相关法 微尺度散斑 离心甩胶法 变形测量 |
| 英文关键词:digital image correlation (DIC) microscale speckle compound spinning method deformation measurement |
| 基金项目:国家自然科学基金(11372118， 11672345)资助 |
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| 中文摘要: |
| 数字图像相关法(DIC)由于具有非接触、全场、精度高、易操作等特点，已被广泛应用于宏微观尺度的变形测量。在微观尺度，DIC可以方便地与显微镜结合，实现变形测量；散斑作为变形的载体，其质量的好坏直接影响到DIC在微尺度变形测量的精度。本文重点介绍了离心甩胶法制备微尺度散斑的方法，并对其应用进展进行评价。具体包括：优化制备工艺参数，获得最优的散斑图；提出散斑膜转移方法，扩大其使用范围；研究散斑膜增韧方法，用于大变形的测量；基于超景深光学显微镜，设计双向加载测试系统；将散斑膜应用于微尺度界面、裂纹尖端等。获得了局部变形场信息，表明该微尺度散斑制备方法具有较好的可行性和应用前景。 |
| 英文摘要: |
| Digital image correlation (DIC) method has been widely used in macro/micro scale deformation measurement due to its non-contact, full-field, high precision and easy to operate and so on. At the micro scale, DIC can be conveniently combined with the microscope to realize the deformation measurement. As a carrier of deformation, the quality of speckle directly affects the accuracy of DIC in measurement of microscale deformation. This paper focuses on the fabrication of microscale speckle by compound spinning method, and evaluates its application progress, including optimization of fabrication process parameters to obtain optimal speckle pattern; presentation of speckle thin coating transfer method to expand its application scope; studying the speckle thin coating toughening method to measure large scale deformation; design of bi-directional loading test system based on hyper-depth of field optical microscope; application of speckle thin coating in micro scale interface and crack tip; and so on. The local deformation field information is obtained, which indicates the feasibility and application prospect of this microscale speckle fabrication method. |
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