An analytical and experimental study on lifetime predictions for fusion reactor first walls and divertor plates

Analyses and experiments concerning lifetime predictions of the first wall and divertor plate of fusion reactors have been performed. Swelling and irradiation creep strain curves are recommended by the evaluation of materials data in open literatures. A parametric lifetime analysis based on a one-dimensional plate model has been performed. To examine the effects of elasto-plasticity and two-dimensional configuration, a two-dimensional elastic-plastic analysis has been applied. Based on thermal and mechanical experiments on a tungsten-copper bonded duplex structure, its fracture behavior and lifetime predictions are discussed. (author)