中文摘要：

设计并制备了5种不同表面结构的导向套,采用单根导向套压出实验、三点弯曲实验,并结合破坏界面形貌的观察,研究了不同表面结构对导向套与树脂界面结合强度及其自身抗弯性能的影响。结果表明,相对于无加工的导向套,周向粗化后的导向套与树脂结合强度提高了56%。而轴向开槽导向套、径向开孔导向套及表面带嵌合槽的导向套与基体的界面结合强度相对无加工导向套,提高了40%-46%;带凸起结构对于界面结合强度的提高不明显。同时,周向粗化处理和带凸起结构的导向套,其抗弯强度与无加工的导向套相差不大;而轴向开槽、嵌合槽结构、径向开孔处理均不同程度地降低了导向套的抗弯强度,其中径向开孔对导向套的抗弯强度的降低幅度最大。

英文摘要：

Five surface structures of guide sleeves were designed and processed. The effects of surface structures of guide sleeves for 3D weaving composites on interface bonding performance and bending strength were investigated by single guide sleeve push-out test, three-point bending test and SEM. The results show that interface bonding strength of the guide sleeves with rough surface by circumferential coarsening increase by 56%, compared to guide sleeve with original surface. The axial grooves, radial hole opening treatment and radial grooves could increase interface bonding strength by 40%--46%, while salient structure did not improve significantly. The bending property of guide sleeves with circumferential coarsening treatment and salient structure were similar as that of guide sleeves with original surface. However, the bending strength of guide sleeves with axial grooves, radial hole opening treatment and radial grooves reduced in varying degrees, where the radial hole opening treatment reduced greatly.