基于SINTAP的管线钢X70断裂韧度CTOD分布规律及检验分析

发布时间：2018-06-17 23:15

本文选题：欧洲工业完整性评定程序 + X　；参考：《焊接学报》2017年09期

【摘要】：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.
[Abstract]:According to BS7448 of England and DNV-OS-F101 standard of Norwegian Classification Society, the fracture toughness CTODG crack tip opening displacement) test was carried out on the heat-affected zone of gas shielded ring welded pipe with a wall thickness of 18.0 mm. The distribution fitting test of the test results was carried out by means of mathematical statistical method. In this paper, Colmogorov test and A2-W2 test are used to test and compare the test results, and the CTOD distribution in the heat-affected zone of the X70 steel welded joint is obtained. The results show that the statistical distribution function of fitting test with A2-W2 method is Weibull distribution function, which can be combined with the European Industrial Integrity Assessment Program (SINTAP), and the reliability evaluation method is Weibull distribution function, and the statistical distribution function of fracture toughness data is Weibull distribution function, which can be combined with the reliability evaluation method of European Industrial Integrity Assessment Program (SINTAP). The probability density distribution function of CTOD fracture toughness in heat affected zone of X70 steel welded joint was calculated.
【作者单位】：武汉理工大学交通学院;中交武汉智行国际工程咨询有限公司;
【分类号】：TG407

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