Determination of creep compliance, recovery and Poisson's ratio of elastomers by means of digital image correlation (DIC)
Determination of creep compliance, recovery and Poisson's ratio of elastomers by means of digital image correlation (DIC)
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DOI：
10.1016/j.polymertesting.2017.02.010
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发表时间：
2017-05-01
期刊：
影响因子：
5.1
通讯作者：
Susarrey-Huerta, Orlando
中科院分区：
文献类型：
--
作者：
Israel Farfan-Cabrera, Leonardo;Benito Pascual-Francisco, Juan;Susarrey-Huerta, Orlando
本文旨在利用数字图像相关（DIC）技术确定三种常用密封弹性体的蠕变柔度、蠕变恢复和泊松比。在短时间实验（3 h）中，对三种不同恒定应力下的应力试件进行了试验，以了解DIC在该应用中的前景。在x轴和y轴上测量应变随时间的变化。从而得到了各弹性体的蠕变柔度、蠕变恢复和泊松比的行为。蠕变结果具有可重复性，并且估计的平均泊松比接近弹性体的报告值。最后，尽管DIC设备存在一些局限性，但我们发现该方法可以作为弹性体蠕变柔度、蠕变恢复和泊松比表征的合适替代方法。此外，它可以通过以下给出的一些建议来增强。(C) 2017 Elsevier Ltd.版权所有。
This work aims to determine the creep compliance, creep recovery and Poisson's ratio of three common sealing elastomers by means of the digital image correlation (DIC). The tests were conducted by stressing specimens under three different constant stresses during short duration experiments (3 h) to see the prospective of DIC for this application. The strains were measured in x and y axes with time. Thus, the behavior of creep compliance, creep recovery, and the Poisson's ratio of each elastomer were obtained. The creep results exhibited repeatability, as well as, the mean Poisson's ratios estimated were close to reported values for elastomers. Finally, despite of some limitations from the DIC equipment, it was found that this procedure can be implemented as a suitable alternative for the characterization of creep compliance, creep recovery and Poisson's ratio of elastomers. Also, it may be enhanced by following some recommendations given. (C) 2017 Elsevier Ltd. All rights reserved.