Abstract
In order to evaluate fatigue crack propagation behavior at J-welding portions of Bottom Mounted Instrumentation (BMI) in Reactor Pressure Vessel (RPV), crack propagation crossing dissimilar material interface between base metal and clad should be investigated. This paper shows crack propagation analyses of cladded plates under cyclic tension load by XFEM, which can model crack independently of finite elements, as a preliminary study for crack propagation analyses considering cladding interface.
