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Experimental investigation of pull-through force of wing-type fastening inserts co-cured in long fiber prepreg sheet (LFPS)

机译：长纤维预浸料片（LFPS）共固化的机翼型紧固插入件的拉力的实验研究

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In order to overcome the shortcomings of conventional fibrous composites, such as the limitations in the mass production of continuous fiber-reinforced composites and the inferior mechanical properties of short fiber-reinforced composites, long fiber prepreg sheets (LFPSs) are introduced in this paper. The LFPS is designed to form complex structures by thermoforming; however, highly complex shapes require mechanical fastening, after the composite parts are thermoformed. For this purpose, wing-type metal inserts embedded in the LFPS during thermoforming are investigated, and the most appropriate insert configuration is suggested. The specimens are subjected to a pull-through test, in accordance with insert parameters, such as the width and length of the insert wings, and the condition that ensures the highest pull-through force is determined. To check for wing deformation after thermoforming, the projected area and bending angle are measured through X-ray observation, and correlated with the pull-through force.
机译：为了克服常规纤维复合材料的缺点，例如连续纤维增强复合材料的批量生产的局限性以及短纤维增强复合材料的较差的机械性能，本文介绍了长纤维预浸料片（LFPS）。 LFPS旨在通过热成型形成复杂的结构。然而，高度复杂的形状需要在复合零件热成型后进行机械固定。为此，研究了在热成型过程中嵌入LFPS中的翼型金属嵌件，并提出了最合适的嵌件配置。根据插入参数，例如插入翼的宽度和长度，对样本进行拉力测试，并确定确保最大拉力的条件。为了检查热成型后的机翼变形，通过X射线观察测量投影面积和弯曲角度，并将其与拉力相关联。

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