Interpretation of FAENA and TIFFSS experiment; Comparison of fatigue strength evaluation methods on thermal striping

kasahara, Naoto; Lejeail, V.*

Since thermal striping is a coupled thermohydraulic and thermomechanical phenomenon, sodium mock-up tests were usually required to confirm structural integrity. CEA and JNC have developed evaluation procedures of thermal striping to establish design-by-analysis methodology for this phenomenon. In order to compare and to validate these methods, two benchmark problems were planned under EJCC contract. One of benchmarks provided by CEA is temperature and fatigue evaluation of tubes and plates tests performed with the EAENA facility. Another problem from JNC is the same evaluation of plates tests conducted by the TIFFSS facility. This report describes the results of intercomparison of fatigue strength evaluation methods through application to both FAENA and TIFFFSS expeliments.