Fatigue tests on the ITER PF jacket

This paper focuses on fatigue tests on the ITER Poloidal Field (PF) jacket made of 316L stainless steel material. During manufacture, the conductor will be compacted and spooled after cable insertion. Therefore, sample jackets were prepared under compaction, bending and straightening in order to simulate the status of PF conductor during manufacturing and winding. The fatigue properties of materials were measured at T < 7 K, including S–N and fatigue crack growth rate (FCGR). The testing results show that the present Chinese PF jacket has good fatigue properties, which conclude that the results are accordant with the requirements of ITER.

► Make fatigue tests on ITER PF jacket.
► The tested PF jacket has high performance on fatigue property, including S–N and FCGR.
► The present Chinese PF jacket could fulfill the ITER requirements.