Experimental investigations on the influence of notch definition on the pullout performance of circumferentially notched z-pins
Experimental investigations on the influence of notch definition on the pullout performance of circumferentially notched z-pins
复制标题
缺口定义对周向缺口z型销拉拔性能影响的实验研究
DOI：
10.1016/j.compstruct.2020.112527
复制
发表时间：
2020
影响因子：
6.3
通讯作者：
Scharr
中科院分区：
文献类型：
--
作者：
Scharr
本文介绍了单向（UD）和准各向同性（QI）纤维取向的碳纤维/环氧预浸料层压材料中周向切口 z 形销的拉拔性能的实验研究结果。研究了 10 至 25 μm 之间的四种不同缺口深度以及 100 至 300 μm 之间的三种不同缺口距离，以确定销表面上矩形缺口对特征 z 销桥接力和由此产生的拔出能量的影响。在 UD 层压板中，最大脱粘力 P d 和最大摩擦力 P f 的最大增量可以通过切口深度为 10 μm、切口距离为 100 μm 的切口 z 销来确定。这也反映在比拔出能上，与具有无缺口销的样品相比，拔出能增加了 40%。对于 QI 层压板，增加幅度更高，并且可以通过在 15 μm 凹口深度处拉拔能增加 55% 来量化。在 20 μm 的恒定凹口深度下，凹口距离的变化显示了拉拔能量的线性依赖性，并且在最高凹口距离 300 μm 时，UD 层压板的改进高达 29%，QI 层压板的改进高达 42%。
This paper presents the results of experimental investigations on the pullout properties of circumferentially notched z-pins in carbon-fiber/epoxy prepreg laminates with unidirectional (UD) and quasi-isotropic (QI) fiber orientation. Four different notch depths between 10 and 25 μ m and three different notch distances between 100 and 300 μ m were investigated to determine the influence of notches with rectangular shape incorporated at the pin surface on the characteristic z-pin bridging forces and the resulting pullout energies. At UD-laminates the highest increase of the maximum debonding force P d and maximum friction force P f could be determined with notched z-pins with a notch depth of 10 μ m and a notch distance of 100 μ m. This is also reflected in the specific pullout energy, which shows an increase of 40%, compared to samples with unnotched pins. For QI-laminates, the increases are higher and can be quantified with an increase in pullout energy of 55% at a notch depth of 15 μ m. A variation of the notch distance at a constant notch depth of 20 μ m shows linear dependencies of the pullout energy and achieves improvements of up to 29% for UD-laminates and 42% for QI-laminates at the highest notch distance of 300 μ m.
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DOI：
10.1016/j.compositesa.2015.07.006
发表时间：
2015-11
影响因子：
8.7
作者：
Bing Zhang;G. Allegri;M. Yasaee;S. Hallett
通讯作者：
Bing Zhang;G. Allegri;M. Yasaee;S. Hallett
影响因子：
6.3
作者：
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影响因子：
2.9
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影响因子：
5.4
作者：
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通讯作者：
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影响因子：
9.1
作者：
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通讯作者：
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