Microdeformation measurement via single-element extended digital image correlation

Microdeformation measurement via single-element extended digital image correlation
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通过单元扩展数字图像相关进行微变形测量

DOI:
10.1177/0309324711406652
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发表时间:
2011-07
期刊:
The Journal of Strain Analysis for Engineering Design
影响因子:
--
通讯作者:
Wang, R.
Wang, R.
中科院分区:
其他
文献类型:
--
作者:
Chen, J.;Zhang, X.;Wang, R.

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生物材料的微变形测量是实验力学领域的一个重要问题。本文提出了单元扩展数字图像相关(single-element X-DIC)方法。如果试件的实际变形符合位移假设,则单单元X-DIC具有更高的测量精度和计算效率。在新的离散化方法的帮助下,单单元X-DIC可以用于测量复杂变形。验证实验结果表明,单单元X-DIC适用于各种变形的测量。结合光学显微镜,将单元素X-DIC应用于牛骨微变形测量,说明单元素X-DIC在生物材料微变形测量中具有广阔的应用前景。
The microdeformation measurement of biomaterials is a crucial issue in the field of experimental mechanics. The single-element extended digital image correlation (single-element X-DIC) method was developed in this paper. If the actual deformation of the specimen is in accordance with the displacement hypothesis, single-element X-DIC possesses a higher measurement accuracy and a higher computational efficiency. With the assistance of a novel discretization method, single-element X-DIC could be used to measure the complex deformation. All results of the verification experiment show that single-element X-DIC is suitable for the measurement of various deformations. Furthermore, combined with optical microscopy, single-element X-DIC was applied to measure the microdeformation of bovine bone, which demonstrates that single-element X-DIC has wide application prospects in the microdeformation measurement of biomaterials.
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