Erlangen 2026 – scientific programme
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P: Fachverband Plasmaphysik
P 25: Plasma Wall Interaction IV
P 25.2: Talk
Friday, March 20, 2026, 11:45–12:00, KH 01.012
Design-by-Analysis of Tungsten Fibre-Reinforced Tungsten for Divertor Plasma-Facing Components — •Tomislav Damjanović1,2, Jan Willem Coenen1, Yiran Mao1, Mehrdad Mousapour1, Christian Linsmeier1,2, and Ute Wilkinson3 — 1Forschungszentrum Jülich GmbH, Institut of Fusion Energy and Nuclear Waste Managment - Plasmaphysics (IFN-1), Jülich 52425, Germany — 2Ruhr-Universität Bochum, Faculty of Physics and Astronomy, Bochum 44801, Germany — 3Dr. Fritsch Sondermaschinen GmbH, Fellbach 70736, Germany
Tungsten remains the leading material for plasma-facing components in fusion devices, yet its brittleness, limited thermal shock resistance, and irradiation-induced degradation raise concerns for long-term divertor operation. Embedding ductile tungsten fibres into a tungsten matrix (Wf/W) offers a route toward enhanced toughness and improved damage tolerance.
This contribution presents a design-by-analysis approach to optimize Wf/W composites for divertor-relevant thermo-mechanical loads. The microscale behavior is represented through homogenized material models using rule-of-mixtures and Mori-Tanaka schemes. These effective properties feed into a mesoscale description based on classical laminate theory to explore fiber volume fractions, orientations, and stacking configurations. Optimized composite layouts are then assessed in component-level finite-element simulations with realistic boundary conditions representative of divertor operation.
Keywords: Wf/W; tungsten composites; design-by-analysis; divertor; optimization