13th International Conference on Fracture June 16–21, 2013, Beijing, China 10 Acknowledgements This work is an extension of Ministry of Industry and Information Technology Project, and the study is supported by the program “Research of Key Points of Whole Fabrication and Installation of Deep-Sea Semisubmersible Drilling Platform” ([2009]No382). The authors would like to thank ShiboYang, Zhangmu Miao, Sheng Peng for their prayer. References [1] PD6493:1991.Guidance on some methods for the derivation of acceptance levels for defects in fusion welded joints[s].British Standards Institution,1991.8 [2] Ainsworth，R.A.Developments in the flaw assessment procedures of R6 revision 4 and BS7910,American Society of Mechanical Engineers,Pressure Vessels and Piping Divison(Publication)PVP,V463,2003,P19-25 [3]BS 7910: Guide on Methods for Assessing the Acceptability of Flaws in Metallic Structures[S]. London: British Standard Institution, 2005. [4]Yue Tian. The Fracture Toughness Assessment Method of Bridge Steel with CTOD and BS 7910 [J]. CHINA RAILWAY SCIENCE, 2010,31(2):40~44. [5] BS7448:Part2.Method for determination of IC K ,critical CTOD and critical J values of welds in metallic materials[S].British Standards Institution ,london,1997. [6]Offshore Standard DNV-OS-C401：Fabrication and Testing of Offshore Structures[S]．DET NORSKE VERITAS．Norway,2008. [7]Zhanguo Liu The Study on CTOD Temper of Welded Joint in Offshore Platform [D]. Wuhan：Wuhan University of Technology ,2010. [8]Metallic materials Tensile testing at ambient temperature[S].Beijing：Chinese Carbide State Bureau of Technical Supervision，2002. [9]David Roylance. STRESS-STRAIN CURVES[S.1] .Department of Materials Science and Engineering，Massachusetts Institute of Technology，Cambridge, MA 02139, 2001. [10]Zhangmu Miao,Dexing Tao. EXPLORATION ON APPLICABILITY AND ACCEPTABLE VALUES IN CTOD TOUGHNESS EVALUATION FOR WELDED JOINTS [J]. Journal of Mechanical Strength,2006,28( 1) : 150~ 154 [11] Guoan Li,Yanliang Lou,Yizeng Zhang. MEASUREMENT OF TRUE STRESS一STRAIN BY PHOTOGRAPHY WITH SINGLE SAMPLE [J]. Physical Test,1992,（2）:52~53. [12] Yunpeng Jiang,Fengzhu Yue,XiaopingHan. DETERMINATION OF THE MATERIALS STRESS AND STRAIN RELA- TIONSHIP FROM THE TENSILE SMOOTH AND NOTCHED BARS [J]. Journal of Mechanical Strength, 2003,25(2):151~15. [13] Towers ,O.L. and Dawes, M.G.. Welding Institute Research on the Fatigue Precracking of Fracture Toughness Specimens[J]. Elastic-Plastic Fracture Test Methods. 1985.
RkJQdWJsaXNoZXIy MjM0NDE=