Journal
FUSION ENGINEERING AND DESIGN
Volume 100, Issue -, Pages 100-111Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2015.04.048
Keywords
X-ray tomography; Finite element analysis; Image-based modelling; Thermal conductivity; Laser flash; Joining
Categories
Funding
- Engineering and Physical Sciences Research Council [EP/K504178/1]
- HECToR [e254]
- Office of Science and Technology through EPSRC's High End Computing Programme
- EPSRC [EP/K000225/1, EP/F007906/1, EP/F001452/1, EP/I02249X/1]
- European Community [RI-283493]
- Culham Centre for Fusion Energy [EP/I501045]
- Engineering and Physical Sciences Research Council [EP/I02249X/1, EP/K000225/1, 976515, EP/F007906/1, EP/K000209/1, EP/F001452/1, EP/D037867/1] Funding Source: researchfish
- EPSRC [EP/D037867/1, EP/K000209/1, EP/K000225/1, EP/I02249X/1, EP/F001452/1, EP/F007906/1] Funding Source: UKRI
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The thermal performance of a carbon fibre composite-copper monoblock, a sub-component of a fusion reactor divertor, was investigated by finite element analysis. High-accuracy simulations were created using an emerging technique, image-based finite element modelling, which converts X-ray tomography data into micro-structurally faithful models, capturing details such as manufacturing defects. For validation, a case study was performed where the thermal analysis by laser flash of a carbon fibre composite-copper disc was simulated such that computational and experimental results could be compared directly. Results showed that a high resolution image-based simulation (102 million elements of 32 mu m width) provided increased accuracy over a low resolution image-based simulation (0.6 million elements of 194 mu m width) and idealised computer aided design simulations. Using this technique to analyse a monoblock mock-up, it was possible to detect and quantify the effects of debonding regions at the carbon fibre composite-copper interface likely to impact both component performance and expected lifetime. These features would not have been accounted for in idealised computer aided design simulations. (C) 2015 The Authors. Published by Elsevier B.V.
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