Design of Rupture Strength based on Confidence Level of HK40 Steel
The strength of high temperature components is designed according to creep rupture strength.A statistical processing of creep rupture data of HK40 steel was performed by Z-parameter method based on Larson-Miller method.The data has been studied to evaluate the distribution under different temperature and stress.And the distribution of Z-parameter was investigated.With the application of Z-parameter,reliability design for allowable stress of creep rupture strength was carried out according to design life.The results show that the distribution of Z-parameter is supported by normal distribution.In comparison with allowable stress designed by conventional safety factor method,reliability design based on Z-parameter is more agree with experimental data.
Creep rupture strength Confidence level Reliability design Safety factor method
Jibin Pei Yunfeng Zhao Shaoping Yu Jie Zhao
Dalian boiler and pressure vessel inspection institute, Dalian, 116013, China School of materials science and engineering, Dalian university of technology, Dalian, 116024,China
国际会议
杭州
英文
120-126
2012-03-23（万方平台首次上网日期，不代表论文的发表时间）