Abstract Ultrasonic vibration-assisted processing has a great advantage in adhesion formation of CFRP-bonded joints. Its high-frequency vibration can effectively improve the fluidity and crosslinking mixing of adhesive, thereby promoted the permeation of adhesive into the substrate microstructure and enhance the mechanical properties of adhesive bonded joints. In this work, ultrasonic vibration-assisted processing was applied to the CFRP adhesive bonded joints, and different processing time and adhesive types were considered. The results showed that ultrasonic vibration-assisted processing could improve mode-I fracture toughness of CFRP-bonded joints significantly, and the processing time was an important factor. Moreover, for different adhesives, the effect of ultrasonic vibration on the bonding performance was different, which was worth paying attention to when bonding. Furthermore, to better illustrate the effect of ultrasonic vibration, the fracture morphology of adhesive bonded joints and the percentage of various failure modes were discussed. This work provides a reference for the bonding technology with ultrasonic vibration, and deserves further study.

中文翻译：

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超声振动辅助加工对CFRP结合接头I型断裂韧性的影响

摘要 超声振动辅助加工在碳纤维复合材料粘接接头的粘接形成方面具有很大的优势。其高频振动能有效提高胶粘剂的流动性和交联混合，从而促进胶粘剂向基材微观结构的渗透，提高胶粘剂粘接接头的力学性能。在这项工作中，超声振动辅助加工应用于碳纤维布粘接接头，并考虑了不同的加工时间和粘合剂类型。结果表明，超声振动辅助加工可显着提高CFRP结合接头的I型断裂韧性，加工时间是一个重要因素。而且，对于不同的粘合剂，超声波振动对粘合性能的影响是不同的，这是在粘合时值得注意的。此外，为了更好地说明超声振动的影响，对胶接接头的断裂形态和各种失效模式的百分比进行了讨论。该工作为超声振动结合技术提供了参考，值得进一步研究。