Ultrasonic vibration has been applied to improve the penetration of adhesive into the anodized layer, thereby enhancing the strength of carbon fiber-reinforced plastic/aluminum alloy bonding joints with anodizing pretreatment. The ultrasonic vibration-assisted adhesive bonding process was designed by orthogonal experiments, then verified experimentally. The strengthening mechanism was studied by analyzing the morphology and elemental distribution of the cross-section of the joint. The results show that the ultrasonic vibration-assisted adhesive bonding process can further strengthen the interfacial bonding. For the studied joints, the strength can reach 18.66 MPa, being 55% higher than without ultrasonic strengthening. The ultrasonic vibration creates shock waves in the adhesive layer, causing a high-speed adhesive jet toward the adherend surface, which makes the interfacial bonding tight and promotes penetration of the adhesive into the anodized layer. The bonding strength is thereby remarkably improved by forming a larger interfacial contact area and more mechanically interlocked structures.

中文翻译：

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碳纤维复合材料/铝合金接头的超声波振动强化粘接与阳极氧化预处理

已应用超声波振动来改善粘合剂对阳极氧化层的渗透，从而通过阳极氧化预处理提高碳纤维增强塑料/铝合金接合接头的强度。通过正交试验设计了超声振动辅助粘接工艺,并进行了试验验证。通过分析接头横截面的形貌和元素分布，研究了其强化机制。结果表明，超声振动辅助粘合工艺可以进一步加强界面结合。对于所研究的接头，强度可以达到 18.66 MPa，比没有超声波强化的接头高 55%。超声波振动在粘合剂层中产生冲击波，使粘合剂高速喷射到被粘物表面，这使得界面结合紧密并促进粘合剂渗透到阳极氧化层中。通过形成更大的界面接触面积和更多的机械互锁结构，从而显着提高了结合强度。