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Study on Manual Electromagnetic Riveting Process and Riveting Quality of Composite Materials |
YANG Yanjie, CHEN Chang, WEI Yuhao, TU Juncheng, FAN Xifeng |
AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610092, China |
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Abstract To study the processability of electromagnetic riveting technology, we explored the feasibility of manually operated electromagnetic riveting by experiments, and analyzed riveting quality through the analysis of rivet formation, the interferences between rivet and hole, as well as the damage of composites. The results show that it may be not easy for operators to hold the riveting gun and top iron stably due to the instantaneous impact force of electromagnetic riveting. Compared with pneumatic hammer riveting, the impact force of electromagnetic riveting increased the muscular load of the operator’s arm by about 50%. In addition, on composite-titanium alloy and composite-composite structures, the size of the titanium-niobium rivet upset head met process requirements without obvious cracks. In addition to no damage observed inside the composite, reliable interference fit can be formed between the nails and holes. However, the problems of skewed heading and small inclined edges of the heading limit the application of electromagnetic riveting.
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