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  • Recent advances in reliability and life predictions of critical JET neutral beam components based on realistic material data for DTE1 operation and possible upgraded injector scenarios


An attempt has been made to calculate realistic values of fatigue life for the critical JET components: PINI grids, backpanels, hypervapotrons and duct scrapers. Boiling heat transfer calculations under the maximum thermal loads predicted the temperature fields and then F.E analyses gave the predicted strains. The latter are relatively high but if one considers the secondary nature of the thermal loads, these high values can be accepted by the codes. In addition, material data incorporating complex phenomena like hardening and ageing result in realistic life predictions.

Additional information

Authors: PAPASTERGIOU S, JET Joint Undertaking, Abingdon, Oxon (GB)
Bibliographic Reference: Report: JET-R(97)01 EN (1997) 21pp.
Availability: Available from the Publications Officer, JET Joint Undertaking, Abingdon, Oxon, OX14 3EA (GB)
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