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The effect of stacking sequence of carbon epoxy composite laminates on pinned-joint strength

机译：碳环氧复合材料层压板的堆叠顺序对钉接强度的影响

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摘要

In this paper, an experimental study regarding the determination of the safe as well as the maximum bearing strengths of a pinned-joint carbon epoxy composite laminate with [0°/45°/-45°/90°]s and [90°/45°/-45°/0°]s stacking sequences is presented. The experiments are carried out according to the ASTM D953 standard. The ratio of the distance from the pin centre to the top edge to the pin diameter (E/D), and the ratio of the specimen width to the pin diameter (W/D) were systematically varied during experiments. The [90°/45°/-45°/0°]_s orientation is found to be stronger when compared to [0°/45°/-45°/90]_s by up to 12% and 20% in terms of the safe and maximum bearing strengths, respectively. Additionally, for E/D ≥ 4 and W/D ≥ 4, both configurations reach their upper limit safe and maximum bearing strengths.
机译：本文针对[0°/ 45°/ -45°/ 90°] s和[90°/ s]的固定接头碳环氧复合材料层压板的安全性以及最大承载强度的确定进行了实验研究。给出了45°/ -45°/ 0°] s的堆叠顺序。根据ASTM D953标准进行实验。在实验过程中，从销钉中心到顶部边缘的距离与销钉直径（E / D）的比例以及样品宽度与销钉直径（W / D）的比例有系统地变化。与[0°/ 45°/ -45°/ 90°] _s相比，[90°/ 45°/ -45°/ 0°] _s方向的强度最高可达到12％和20％安全和最大承载强度。此外，对于E / D≥4和W / D≥4，两种配置均达到安全和最大轴承强度的上限。

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