Investigation for Stress Intensity Factor Solutions on Nozzle Corner Flaw (Part 2)

Abstract

In order to provide a stress intensity factor (K)-solution for a nozzle corner flaw subjected to internal pressure for the Japan Society of Mechanical Engineers (JSME) Rules on Fitness for Service (FFS) for nuclear power plant, four candidates, which are the Paris and Sih based solution, the Fife’s solution, the Kobayashi’s solution and the solution of a flat plate with a semi-elliptical surface flaw in the JSME Rules on FFS, were compared with the Ks by Finite Element Method. As the result, the flat plate solution was confirmed to be the most adequate for K calculation of a nozzle corner flaw in the JSME Rules on FFS.