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Thermal fatigue is the main lifetime limiting phenomenon for first wall (FW) components under normal operational conditions. Several activities have been identified within the European Community's Fusion Programme to quantify such effects as the sensitivity of crack initiation and crack growth for FW components subjected to thermal fatigue. These include: (i) a testing programme on medium- and small-scale FW mock-ups with and without initial flaws; (ii) development of non-destructive testing (NDT) techniques for the measurement of flaws in FW components; (iii) analytical studies of fatigue crack limitation and fatigue crack growth to verify the predictions of existing design codes and to determine the need to use inelastic computations. This paper contains a brief review of the current status of each of these items with emphasis on their future direction.

Additional information

Authors: JAKEMAN R R, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);VIEIDER G, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);MATERA R, JRC Ispra (IT);MEROLA M, JRC Ispra (IT);DIEGELE E, Forschungszentrum Karlsruhe GmbH (DE);CHABENAT A, Framatome, Saint-Marcel (FR);BOUVERET Y, Framatome, Saint-Marcel (FR);PERSANO ADORNO G, Ansaldo SpA, Genoa (IT);ALBERTINI G, Università Ancona, Istituto di Scienze Fisiche (IT)
Bibliographic Reference: Paper presented: 17th Symposium on Fusion Technology, Roma (IT), September 14-18, 1992
Availability: Available from (1) as Paper EN 36989 ORA
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