SYMPOSIA PAPER Published: 09 February 2018
STP87019850001

Fracture Mechanics Methodology for Predicting Critical Flaw Sizes for the First Wall of a Fusion Reactor

Source

An approach, based on fracture mechanics concepts, is presented for calculating the critical flaw size for a crack to penetrate the first wall of a fusion reactor when exposed to a plasma disruption superimposed on normal operating conditions. Initially, for the ductile start-of-life material, predictions are based on empirical equations developed for annealed stainless steel. For the end-of-life material embrittled due to irradiation to a fluence of nominally 7.7 × 1021 neutrons (n)/cm2 (E >14 MeV), an approach based on linear elastic fracture mechanics is presented. Unknowns associated with both approaches are identified and the need for future work is discussed.

Author Information

Reuter, Walter, G.
EG&G Idaho, Inc., Idaho Falls, ID, US
Rahl, Tom, E.
EG&G Idaho, Inc., Idaho Falls, ID, US
Merrill, Brad, J.
EG&G Idaho, Inc., Idaho Falls, ID, US
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Details
Developed by Committee: E10
Pages: 537–547
DOI: 10.1520/STP87019850001
ISBN-EB: 978-0-8031-7679-9
ISBN-13: 978-0-8031-0592-8