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The thermo-mechanical response of plasma facing materials (PFMs) to heat loads from the fusion plasma is one of the crucial issues in fusion technology. In this work, a fully analytical description of the thermal stress distribution in armour tiles of plasma facing components is presented which is expected to occur under typical high heat flux (HHF) loads. The method of stress superposition is applied considering the temperature gradient and thermal expansion mismatch. Several combinations of PFMs and heat sink metals are analysed and compared. In the framework of the present theoretical model, plastic flow and the effect of residual stress can be quantitatively assessed. Possible failure features are discussed.

Additional information

Authors: YOU J H, Max-Planck-Institut fur Plasmaphysic, Garching bei Munchen (DE);BOLT H, Max-Planck-Institut fur Plasmaphysic, Garching bei Munchen (DE)
Bibliographic Reference: An article published in: Journal of Nuclear Materials, Vol.299 (2001), pp.9-19
Record Number: 200114057 / Last updated on: 2001-11-23
Original language: en
Available languages: en