考虑应力比和门槛值的海水腐蚀疲劳裂纹扩展预测模型

刘冬, 刘静, 黄峰, 杜丽影, 彭文杰

Corrosion Fatigue Crack Growth Prediction Model Based on Stress Ratio and Threshold for Marine Engineering Steel DH36Z35 in Seawater

LIU Dong, LIU Jing, HUANG Feng, DU Liying, PENG Wenjie

表2 Trantina-Johnson模型拟合曲线方程

Table 2 Trantina-Johnson model fitting curve equation

No. Environment R C m r S01 Air 0.1 6.379×10-7 1.628 0.986 S02 Air 0.3 4.051×10-7 1.995 0.997 S03 Air 0.5 4.195×10-7 1.581 0.996 S04 Seawater 0.1 1.480×10-6 1.410 0.975 S05 Seawater 0.3 2.576×10-6 1.425 0.993 S06 Seawater 0.5 8.343×10-7 1.673 0.992