THE BACKGROUND OF THE FITNET FRACTURE TOUGHNESS ESTIMATION METHODOLOGY
The fracture toughness is one of the key-inputs for any structural integrity assessment. The desirability of having appropriate reliable toughness data cannot be emphasised too strongly, and it is vital that toughness data be obtained from properly documented welding procedure test samples at the time of construction and extracted from all the critical weld regions including the heat-affected zones and the weld metal. The structural integrity assessment procedure FITNET fracture toughness assessment part is based on the Master Curve (MC) method for analysis of brittle fracture test results. FITNET contains as basic level a lower tail modification of the MC analysis. In an ideal situation, appropriate fracture toughness data for use in structural integrity assessments are generated through the use of suitable fracture mechanics based toughness tests. If this is not possible, it is necessary to base the analysis on a reliable correlation between Charpy impact energy and fracture toughness for the particular case being assessed.
Kim Wallin
Finnish Academy c/o VTT Materials Perfomance, P.O. Box 1000, FI-02044 VTT, Finland
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）