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| Effect of Hydrothermal Environment on Load Enhancement Factor of CCF300 Composite Laminates |
| Received:April 05, 2015 Revised:August 15, 2015 |
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| DOI：10.7643/issn.1672-9242.2015.04.018 |
| KeyWord:durability composite laminates joint Weibull distribution load enhancement factor hydrothermal environment |
| Author | Institution |
| LIU Xu |
Qingdao Branch， Naval Aeronautical Engineering Institute， Qingdao |
| LEI Yuan-ling |
1. Qingdao Branch， Naval Aeronautical Engineering Institute， Qingdao ;2. Nanchang Aeronautical University， Nanchang |
| CHEN Yue-liang |
Qingdao Branch， Naval Aeronautical Engineering Institute， Qingdao |
| HUO Wu-jun |
Qingdao Branch， Naval Aeronautical Engineering Institute， Qingdao |
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| Abstract: |
| Objective To study the effect of hydrothermal environment on load enhancement factor of CCF300 composite laminates. Methods The study focused on the CCF300/5228A composite laminates with the stacking sequence of［45°/0°/-45°/90°/0° 2/45°/0°-45°/0° ］ 2s. The non-coupling experiment of constant environment and constant-amplitude fatigue loading was conducted, the dispersion of the fatigue life of the composite material was analyzed by modified joint Weibull distribution, and the MATLAB software was used to develop a program to calculate the load enhancement factor of the part. Results The results showed that the shape parameter of composite materials had monotone decrease when the humiture increased, accordingly the load enhancement factor also increased. Conclusion It showed that under hydrothermal environment, the load enhancement effect was not sufficient to accelerate fatigue of the composite laminates in the fatigue life test, indicating that the mechanical properties decreased, however, the load enhancement factor had no obvious change. |
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