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贾安东, 张纪绚, 陈棣华. 几种钢焊接接头低周腐蚀疲劳da/dN方程[J]. 焊接学报, 1995, (1): 45-49.
引用本文: 贾安东, 张纪绚, 陈棣华. 几种钢焊接接头低周腐蚀疲劳da/dN方程[J]. 焊接学报, 1995, (1): 45-49.
Jia Andong, Zhang Jixuan, Chen Dihua. Low-cycle corrosion fatigue crack growth rate equations of welded joints for several steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1995, (1): 45-49.
Citation: Jia Andong, Zhang Jixuan, Chen Dihua. Low-cycle corrosion fatigue crack growth rate equations of welded joints for several steels[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 1995, (1): 45-49.

几种钢焊接接头低周腐蚀疲劳da/dN方程

Low-cycle corrosion fatigue crack growth rate equations of welded joints for several steels

  • 摘要: 通过A537、A131,E36和15MnNi几种钢焊接接头进行在海水和空气中的疲劳试验。在双对数logda/dN,logΔK和logda/dN,logΔJ坐标图上,用一条或两条直线二拟合试验数据,因而得到da/dN=CK)m和da/dN=AJ)n (或da/dN=BJe)β;da/dN=DJp)γ)拟合方程式。用F检验和其他方法去评价拟合曲线,表明该统计结果的拟合是比较精确的,所得上述方程在工程应用是合理的和可行的。

     

    Abstract: As to the welded joints made of A537、A131、E36、15MnNi and other steels the fatigue testing has been executed in sea water and atmosphere. By using with the double-logarithmic coordinate system of log da/dN and log ΔK or log da/dN and log ΔJ the experimental data have been fitted with a straight line or two lines, thus the fitting equations da/dN=CK)m and da/dN=AJ)n(or da/dN=BJe)β and da/dN=DJp)γ)have been obtained. Having evaluated the fit curve by the F test and the others, the statistical results show that the fitting is relatively accurdte, so these equations are feasible and predical.

     

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