The ultrasonic joining process was recently introduced as an alternative concept to join through-the-thickness reinforced metal-composite hybrid structures. In this work, the investigation of joining process parameters effect on the joint mechanical performance of Ti-6Al-4V-glass-fiber-reinforced polyetherimide overlap joints was carried out by Box-Behnken design of experiments. The individual and combined effects of joining energy, sonotrode oscillation amplitude, and joining pressure on the ultimate lap shear force were elucidated by response surfaces method and analysis of variance. As a result of this study, a set of optimized joining parameters were obtained to produce joints with high ultimate lap shear force. The obtained reliable reduced model (R² = 82%) displays a major influence of joining energy (25.3%) and sonotrode oscillation amplitude (21.2%) on the joint mechanical performance. Two-way interaction response surfaces were used to support strategies to optimize the maximum ultimate lap shear force. By comparing the optimized joint condition produced in this work with previously published results an improvement of 79% in ultimate lap shear force was attained, thereby, proving the potential of the proposed process optimization procedure.

中文翻译：

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超声焊接工艺参数对金属复合混杂接头力学性能影响的研究

最近引入了超声连接工艺，作为连接整个厚度增强金属-复合材料混合结构的替代概念。在这项工作中，通过Box-Behnken实验设计，研究了连接工艺参数对Ti-6Al-4V玻璃纤维增​​强聚醚酰亚胺叠层接头的接头机械性能的影响。通过响应面法和方差分析，阐明了接合能，超声焊极振动振幅和接合压力对最终搭接剪切力的个体和综合影响。这项研究的结果是，获得了一组优化的连接参数，以产生具有高极限搭接剪切力的接头。获得的可靠简化模型（R ² （= 82％）对接合机械性能的影响很大，其中接合能量（25.3％）和超声焊极振荡幅度（21.2％）。双向相互作用响应面用于支持优化最大极限搭接剪切力的策略。通过将这项工作中产生的优化接头条件与先前发表的结果进行比较，最终搭接剪切力提高了79％，从而证明了所提出的工艺优化程序的潜力。