CAJ | 학술논문

目的：研究铝合金预腐蚀疲劳的寿命评估模型。方法利用损伤力学模型，建立预腐蚀构件疲劳寿命预测模型，并利用 LY12CZ 铝合金进行预腐蚀疲劳的验证性实验。结果利用损伤力学建立的模型所得到的预腐蚀铝合金试件的疲劳寿命与实验结果吻合程度良好。结论基于损伤力学的铝合金预腐蚀疲劳寿命预测模型合理有效。
목적：연구려합금예부식피로적수명평고모형。방법이용손상역학모형，건립예부식구건피로수명예측모형，병이용 LY12CZ 려합금진행예부식피로적험증성실험。결과이용손상역학건립적모형소득도적예부식려합금시건적피로수명여실험결과문합정도량호。결론기우손상역학적려합금예부식피로수명예측모형합리유효。
Objective To study the evaluation method of fatigue life of pre-corroded aluminum alloy. Methods By means of damage mechanics, a theoretical model for fatigue life prediction of pre-corroded parts was established, and pre-corrosion fatigue experiment was conducted on LY12CZ aluminum alloy to verify the accuracy of the proposed model. Results Experimental results of the fatigue life of pre-corroded aluminum alloy parts were in good agreement with the pre-dictions of the proposed model established based on damage mechanics. Conclusion The proposed model based on damage mechanics was reasonable and effective in predicting the fatigue life of pre-corroded aluminum alloy.