预循环应力对高速列车关键结构用铝合金材料疲劳裂纹扩展行为的影响
张啸尘,孟维迎(
),邹德芳,周鹏,石怀涛
),邹德芳,周鹏,石怀涛
Effect of Pre-Cyclic Stress on Fatigue Crack Propagation Behavior of Key Structural Al Alloy Materials Used in High Speed Trains
ZHANG Xiaochen,MENG Weiying(),ZOU Defang,ZHOU Peng,SHI Huaitao
),ZOU Defang,ZHOU Peng,SHI Huaitao
图3. 稳态裂纹扩展阶段裂纹扩展速率与应力强度因子范围(da/dN-ΔK)关系曲线
Fig.3. Fitted curves of crack propagation rates vs stress intensity factor range (da/dN-ΔK) in the steady growth zone
