International Round Robin Analysis on PFM

Kanto, Yasuhiro*; Onizawa, Kunio ; Yoshimura, Shinobu*

The international Round Robin (RR) activity on probabilistic fracture mechanics (PFM) analysis was performed in conjunction with Korea, Taiwan and Chinese research groups. The purposes of this program are to achieve the enhancement of PFM analysis technology and to maintain the continuous cooperation among Asian institutes in this field. The common problem for round robin was set to the evaluation of fracture probability of reactor pressure vessels during pressurized thermal shock event. This paper describes the outline of the problem and typical analysis results on the crack detection ability in in-service inspection. The importance in PFM analysis techniques and status in the participating countries are shown.