| 孔光明,李旭东,穆志韬.基于局部腐蚀损伤的铝合金预腐蚀疲劳裂纹扩展模型[J].装备环境工程,2014,11(6):90-94. KONG Guang-ming,LI Xu-dong,MU Zhi-tao.Fatigue Crack Extension Model of Aluminium Alloy with Prior Corrosion Damage Based on Localised Corrosion Damage[J].Equipment Environmental Engineering,2014,11(6):90-94. |
| 基于局部腐蚀损伤的铝合金预腐蚀疲劳裂纹扩展模型 |
| Fatigue Crack Extension Model of Aluminium Alloy with Prior Corrosion Damage Based on Localised Corrosion Damage |
| 投稿时间：2014-07-19 修订日期：2014-12-15 |
| DOI：10. 7643 / issn. 1672-9242. 2014. 06. 015 |
| 中文关键词: 预腐蚀疲劳 孔蚀率 疲劳裂纹扩展 铝合金 |
| 英文关键词:pre-corrosion fatigue pitting rate fatigue crack growth aluminum alloy |
| 基金项目: |
|
|
|
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 建立铝合金预腐蚀疲劳裂纹扩展模型。 方法 采用表征局部环境腐蚀损伤影响程度的参数孔蚀率对腐蚀疲劳裂纹扩展速率进行修正。 结果 修正后的腐蚀铝合金试件的疲劳裂纹扩展速率与试验结果吻合程度良好。 结论 修正后的铝合金预腐蚀疲劳裂纹扩展速率模型合理有效,试验数据和预测模型可为海军飞机结构的损伤容限设计提供参考。 |
| 英文摘要: |
| Objective To establish a modified model for pre-corrosion fatigue crack growth rate of aluminum alloy. Methods Considering that the local damage around the crack tip was more reasonable for accelerating crack growth rate in corrosive environment, the pitting rate, which was a parameter characterizing the influence of corrosion in local environment, was used to correct the corrosion fatigue crack growth rate. Results The experimental results were in good agreement with predictions of the amended fatigue crack growth rate model for corroded aluminum alloy specimens. Conclusion The corrected aluminum alloy pre-corrosion fatigue crack growth rate model was reasonable and effective, and the test data and the prediction model could provide a reference for the damage tolerance design of navy aircraft structure. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
