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| Research on Fatigue Experimental of Interference Fit Riveting of Titanium Alloy Structure |
| CHEN Yunquan1，CAO Zengqiang2, QIN Longgang1, CHEN Lili1, YAN Li1 |
(1. AVIC Chengdu Aircraft Industrial (Group) Co.,Ltd.,Chengdu 610000, China;
2. School of Mechanical Engneerng, Northwestern Polytechnical University,Xian 710000, China) |
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Abstract Interference-fit is a well-known technique for improving the fatigue life of joints, which has been widely
adopted in aerospace manufacturing industry. The excellent performance of titanium alloy has greatly improved its application
in aerospace structures. However, interference-fit riveting in our country is still limited to aluminum alloy structures,
there is few studies on the interference-fit riveting in titanium structures. Fatigue experiments were carried out on titanium
structures with different interference-fit levels in this paper. It was found that interference-fit riveting can greatly improve
the fatigue life of joints compared with conventional riveting. The increment of fatigue life by interference-fit riveting becomes
more obvious at lower level loads. Processing parameters, such as the gap between hole and pin, also have great effects
on the fatigue life.
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2017, 
