13th International Conference on Fracture June 16–21, 2013, Beijing, China -11- and verifiable material properties data and validated fracture mechanics parameters for use in their predictive methodologies. The paper has incorporated the results from the research in a number of EU collaborative projects [2-6] to develop an overall methodology for deriving acceptable data and validated parameters for life assessment analysis. The results are also compatible with ASTM E1457 [8] standard for testing C(T) specimens. In addition the newly developed ASTM E2670 [29] on creep/fatigue crack growth testing identifies the problems associated with creep/fatigue interaction and presents an analysis method for a range of frequencies. In addition the similarities of the approaches in the various codes do not necessarily imply that calculations by the different methods will give the same predictions. It may be possible that under certain controlled and validated circumstance the predictions can be optimised. It is clear that a critical comparison is only possible when the same method is used on another material and condition or the same test cases are examined by the different codes. 3. ACKNOWLEDGEMENT The author acknowledges the collaboration of partner institutions in HIDA, LICON and CRETE (European Collaborative programmes (1996-2004) in addition to the partners in VAMAS TWA25, VAMAS TWA31 and ASTM E08 Committees. 4. REFERENCES 1. VAMAS TWA25, Code of Practice, ISO/TTA draft, ' Creep/fatigue Crack Growth in Components', VAMAS document, Ed. K. Nikbin, May 2005. 2. ‘CCG in C-Mn’, ‘CCG in Carbon-Manganese at 320-400’, Brite/Euram project, 1993-1997 3. ‘HIDA’, ‘High Temperature Defect Assessment’ Brite/Euram project, 1996-2000, 4. ‘LICON‘, ‘Accelerated Test Methods for Advanced Steels’ Brite/Euram project, 1997-2001 5. ‘CRETE’, ‘Creep Crack Growth Testing for an EU CoP’ , Brite/Euram project 2001-2004 6. FITNET, ‘Fitness for service analysis of structures using the FITNET procedure; An Overview’, 24th Int. Conf. on Offshore Mechanics and Artic Eng., Greece 12-17 June 2005. 7. 'SINTAP', ‘Structural integrity assessment procedures for European Industry’, Brite/Euram project no. BE 95-1426, contract no BRPR-CT95-0024, Final Report Nov. 1999. 8. ASTM E 1457-10, 2010, “Standard Test Method for Measurement of Creep Crack Growth Rates in Metals”, ASTM Standards 03.01. 9. ASME Boiler and Pressure Vessel Code (1991), Case N-47 (29), Class 1 components in elevated temperature service, Section III, Division I, ASME, New York. 10. RCC-MR (1985) Technical Appendix A3, Section 1, Subsection Z, Materials design and construction rules for mechanical components of FBR nuclear test islands, AFCEN, Paris. 11. BS7910,”Guide on methods for assessing the acceptability of flaws in fusion welded structures,” London, BSI, 2000. 12. R5-British Energy, “Defect assessment code of practice for High temperature metallic components,” British Energy Generation Ltd. 2000
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