Outubro 2014 vol. 1 num. 1 - 13th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials

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Microscopic Image-Based Finite Element Analysis of Porous Composite Cathode Microstructures

Vaidya, Sushrut ; Kim, Jeong-Ho ;

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We reconstruct three-dimensional (3D) microstructures of porous ceramic composite cathodes of solid oxide fuel cells (SOFCs) using a series of two-dimensional (2D) images. We then discretize the reconstructed 3D models into 8-node brick elements, and analyze the models and performed stress and probability of failure analyses using a general-purpose commercial finite element (FE) software package. We numerically investigate the effects of volume fractions and temperature-dependent material properties on the thermo-mechanical stress behavior of cathode microstructures.

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Palavras-chave: Microstructure reconstruction, Ceramic composites, Composite electrodes, Homogenization techniques,

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DOI: 10.5151/matsci-mmfgm-050-f

Referências bibliográficas
  • [1] S. C. Singhal, K. Kendall (Eds.), High-temperature Solid Oxide Fuel Cells: Fundamentals, Design and Applications: Fundamentals, Design and Applications, Elsevier; 2003.
  • [2] J.R. Wilson, A.T. Duong, M. Gameiro, H. Chen, K. Thornton, D.R. Mumm, S.A. Barnett, Quantitative three-dimensional microstructure of a solid oxide fuel cell cathode, Electrochemistry Communications, 11 (2009) 1052-1056.
  • [3] J. Johnson, J. Qu, Effective modulus and coefficient of thermal expansion of Ni-YSZ porous cermets, Journal of Power Sources, 181 (2008) 85-92.
  • [4] S. Giraud, J. Canel, Young''s modulus of some SOFCs materials as a function of temperature, Journal of the European Ceramic Society, 28 (2008) 77-83.
  • [5] S. Vaidya, J.-H. Kim, Finite element thermal stress analysis of solid oxide fuel cell cathode microstructures, Journal of Power Sources, 225 (2013) 269-276.
  • [6] G. Anandakumar, N. Li, A. Verma, P. Singh, J. Kim, Thermal stress and probability of failure analyses of functionally graded solid oxide fuel cells, Journal of Power Sources, 195 (2010) 6659-6670.
  • [7] J. Laurencin, G. Delette, F. Lefebvre-Joud, M. Dupeux, A numerical tool to estimate SOFC mechanical degradation: case of planar cell configuration, Journal of the European Ceramic Society, 28 (2008) 1857-1869.
Como citar:

Vaidya, Sushrut; Kim, Jeong-Ho; "Microscopic Image-Based Finite Element Analysis of Porous Composite Cathode Microstructures", p. 30-33 . In: Proceedings of the 13th International Symposium on Multiscale, Multifunctional and Functionally Graded Materials [=Blucher Material Science Proceedings, v.1, n.1]. São Paulo: Blucher, 2014.
ISSN 2358-9337, DOI 10.5151/matsci-mmfgm-050-f

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