Abstract Bolted joints in quasi-unidirectional glass-fibre NCF composite laminates
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Bolted joints in quasi-unidirectional glass-fibre NCF composite laminates

机译：准单向玻璃纤维NCF复合层压板的螺栓连接

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AbstractIn this study, crossply and quasi-isotropic quasi-unidirectional (quasi-UD) non-crimp fabric (NCF) glass/epoxy laminates were manufactured by using vacuum assisted resin transfer moulding (VARTM) and tested according to the ASTM bearing test standard D5961. The specimen geometry was kept constant in all specimens with the ratios of e/d=3, w/d=6 for d=6mm. Similar damage modes and damage propagation trends were observed between the classical unidirectional prepreg tapes and the current material system. Furthermore, the bolted joint strength of quasi-UD NCF glass/epoxy laminates was estimated by a three-dimensional (3-D) progressive damage model (PDM) to evaluate the capabilities of a widely used finite element (FE) program, ANSYS. The experimental data and predicted results were in a good agreement and the experimental failure modes were successfully predicted.
机译： 摘要 在此研究中，交叉和准各向同性准单向（qua-UD）非卷曲织物（NCF）玻璃/环氧树脂层压板通过使用真空辅助树脂传递模塑（VARTM）制造的产品，并根据ASTM轴承测试标准D5961进行了测试。样品的几何形状在所有样品中保持恒定，比率为e / d = 3，d / 6mm为w / d = 6。在经典的单向预浸料带和当前的材料系统之间观察到类似的破坏模式和破坏传播趋势。此外，通过三维（3-D）渐进损伤模型（PDM）估算了准UD NCF玻璃/环氧树脂层压板的螺栓连接强度，以评估广泛使用的有限元（FE）程序ANSYS的功能。实验数据与预测结果吻合良好，并成功地预测了实验失败的模式。

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