A brief introduction of the assessment method for the safe operating life of welds made by the same metal under steady creep loading in R5,Vol.7 is presented.The assessment procedure,calculation methods of some import...A brief introduction of the assessment method for the safe operating life of welds made by the same metal under steady creep loading in R5,Vol.7 is presented.The assessment procedure,calculation methods of some important parameters,validations and restrictions are given in the paper.Suggestions are made for the further research work.展开更多
依照英国BS7448和挪威船级社DNV-OS-F101标准对管壁厚18.0 mm的X70级气体保护焊环焊管热影响区进行断裂韧度CTOD(crack tip opening displacement)试验,并应用数理统计方法对试验结果进行了分布拟合检验.文中分别采用了柯尔莫哥洛夫检...依照英国BS7448和挪威船级社DNV-OS-F101标准对管壁厚18.0 mm的X70级气体保护焊环焊管热影响区进行断裂韧度CTOD(crack tip opening displacement)试验,并应用数理统计方法对试验结果进行了分布拟合检验.文中分别采用了柯尔莫哥洛夫检验法和A2-W2检验法对试验结果进行了拟合检验和对比分析,得到了该X70钢焊接接头热影响区CTOD分布规律.结果表明,应用A2-W2检验法进行拟合检验的敏感度较高,且断裂韧度数据拟合较好的统计分布函数为Weibull分布函数,可结合欧洲工业完整性评定程序(SINTAP)的可靠性评定方法,计算得X70钢焊接接头热影响区CTOD断裂韧度概率密度分布函数.展开更多
文摘A brief introduction of the assessment method for the safe operating life of welds made by the same metal under steady creep loading in R5,Vol.7 is presented.The assessment procedure,calculation methods of some important parameters,validations and restrictions are given in the paper.Suggestions are made for the further research work.
文摘依照英国BS7448和挪威船级社DNV-OS-F101标准对管壁厚18.0 mm的X70级气体保护焊环焊管热影响区进行断裂韧度CTOD(crack tip opening displacement)试验,并应用数理统计方法对试验结果进行了分布拟合检验.文中分别采用了柯尔莫哥洛夫检验法和A2-W2检验法对试验结果进行了拟合检验和对比分析,得到了该X70钢焊接接头热影响区CTOD分布规律.结果表明,应用A2-W2检验法进行拟合检验的敏感度较高,且断裂韧度数据拟合较好的统计分布函数为Weibull分布函数,可结合欧洲工业完整性评定程序(SINTAP)的可靠性评定方法,计算得X70钢焊接接头热影响区CTOD断裂韧度概率密度分布函数.
