Experimental characterisation of large in-plane shear behaviour of unidirectional carbon fibre/epoxy prepreg tapes for continuous tow shearing (CTS) process
Experimental characterisation of large in-plane shear behaviour of unidirectional carbon fibre/epoxy prepreg tapes for continuous tow shearing (CTS) process
复制标题
用于连续丝束剪切 (CTS) 工艺的单向碳纤维/环氧预浸带大面内剪切行为的实验表征
DOI：
10.1016/j.compositesa.2022.107168
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Zhang B
中科院分区：
文献类型：
--
作者：
Zhang B
连续丝束剪切（CTS）工艺是一种先进的带放置技术，其具有通过面内剪切变形来操纵单向预浸带而不存在带屈曲、间隙和重叠的能力。然而，带内固有的纤维未对准可在剪切过程期间引起纤维波纹，这进一步受到加工参数（诸如温度、剪切速率和纤维张力）的影响。在本文中，这些参数对两种不同的单向碳/环氧预浸带的剪切行为的影响进行了实验研究。一个定制的测试夹具被设计成在各种剪切速率和纤维张力下剪切胶带试样。数字图像相关（DIC）被用来获得全场应变的标本，研究在剪切过程中的纤维重新排列。实验结果表明，温度和纤维张力显着影响纤维重新排列的均匀性。此外，由于两种预浸带的浸渍特性不同，在相同剪切条件下的响应也不同。
The continuous tow shearing (CTS) process is an advanced tape placement technique with the ability to steer unidirectional prepreg tapes by in-plane shear deformation without the presence of tape buckling, gaps and overlaps. However, the inherent fibre misalignment within the tape can induce fibre waviness during the shearing process, which is further affected by processing parameters such as temperature, shear rate and fibre tension. In this paper, the effect of those parameters on the shear behaviour of two different unidirectional carbon/epoxy prepreg tapes was experimentally investigated. A bespoke test fixture was designed to shear the tape specimens at various shear rates and fibre tensions. Digital image correlation (DIC) was used to obtain full-field strains of the specimens to investigate the fibre realignment during shearing. Experimental results showed that both temperature and fibre tension significantly affect the uniformity of the fibre realignment. Moreover, the responses of the two prepreg tapes under the same shearing condition were different due to their different impregnation characteristics.
DOI：
--
发表时间：
2012
期刊：
影响因子：
--
作者：
Ylva Larberg;M. Åkermo;Monica Norrby
通讯作者：
Monica Norrby
使用连续丝束剪切机制具有纤维转向功能的先进自动化铺带功能
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
Evangelos Zympeloudis;K. Potter;P. Weaver;B. Kim
通讯作者：
B. Kim
DOI：
10.1016/j.compositesa.2014.02.019
发表时间：
2014-06-01
影响因子：
8.7
作者：
Kim, Byung Chul;Weaver, Paul M.;Potter, Kevin
通讯作者：
Potter, Kevin