Probabilistic Integrity Assessment of Pressure Piping Containing Defects
In the present paper, integrity assessment is made to the defects in weld metal zone of pressure piping of X52 steel using the two basic routes, FAD and CDF, which are provided in the European flaw assessment procedure SINTAP. Based on the experimental data various analysis levels of SINTAP are discussed, including the uncommonly used J-integral level in particular. Furthermore, to meet the need of the reliability assessment of pressure piping containing defects in engineering applications, probabilistic procedures are employed to obtain several probability curves with given survivability on the J-integral level with respect to the great scatter of the tested fracture toughness which is required in the J-integral level analysis.
Sihai Jiao, Zhengyi Jiang and Jinglong Bu
M. Li et al., "Probabilistic Integrity Assessment of Pressure Piping Containing Defects", Advanced Materials Research, Vols. 146-147, pp. 390-393, 2011