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| Study on Propagation Life of Fretting Fatigue Crack of Aerial Aluminum Alloy |
| Received:April 02, 2012 Revised:October 15, 2012 |
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| DOI： |
| KeyWord:aluminum alloy fretting fatigue propagation life |
| Author | Institution |
| YANG Mao-sheng |
Qingdao Branch of Naval Aeronautical and Astronautical University，Qingdao ，China |
| BI Yu-quan |
Qingdao Branch of Naval Aeronautical and Astronautical University，Qingdao ，China |
| REN Jian |
Qingdao Branch of Naval Aeronautical and Astronautical University，Qingdao ，China |
| WANG Hai-dong |
Qingdao Branch of Naval Aeronautical and Astronautical University，Qingdao ，China |
| JIANG Wen-hao |
Qingdao Branch of Naval Aeronautical and Astronautical University，Qingdao ，China |
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| Abstract: |
| A new model for predicting propagation life of fretting fatigue crack of aluminum alloy LY12CZ was established based on part mechanics and part criterion of composite crack. Parameters of the model were determined. The correctness and validity of the model were validated according to the contrast of experiment life and predicting life. The results showed that fretting fatigue crack formation is fast and its propagation life is only 20 to 25 percent of the total fatigue life, which means the failure life of structure is mainly in the propagation phase. |
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