Modelling the impact of creep on the probability of failure of a solid oxidefuel cell stack

Fabio Greco, Henrik Lund Frandsen, Arata Nakajo, Mads Find Madsen, Jan Van herle

Research output: Contribution to journalJournal articleResearchpeer-review

1 Downloads (Pure)

Abstract

In solid oxide fuel cell (SOFC) technology a major challenge lies in balancing thermal stresses from an inevitable thermal field. The cells are known to creep, changing over time the stress field. The main objective of this study was to assess the influence of creep on the failure probability of an SOFC stack. A finite element analysis on a single repeating unit of the stack was performed, in which the influence of the mechanical interactions,the temperature-dependent mechanical properties and creep of the SOFC materials are considered. Moreover, stresses from the thermo-mechanical simulation of sintering of the cells have been obtained and were implemented into the model of the single repeating unit. The significance of the relaxation of the stresses by creep in the cell components and its influence on the probability of cell survival was investigated. Finally, the influence of cell size on the failure probability was investigated.© 2014 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalJournal of the European Ceramic Society
Volume34
Pages (from-to)2695–2704
ISSN0955-2219
DOIs
Publication statusPublished - 2014

Keywords

  • Solid oxide fuel cell
  • Failure probability
  • Creep
  • Thermal stress
  • Finite element method

Fingerprint Dive into the research topics of 'Modelling the impact of creep on the probability of failure of a solid oxidefuel cell stack'. Together they form a unique fingerprint.

Cite this