Classification of mechanical failures of SOFC and strategy for evaluation of the operational margins

T. Kawada, S. Watanabe, S. Hashimoto, T. Sakamoto, A. Unemoto, M. Kurumatani, K. Sato, F. Iguchi, K. Yashiro, K. Amezawa, K. Terada, M. Kubo, H. Yugami, T. Hashida, J. Mizusaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

Mechanical damages and their formation mechanisms in SOFC were investigated. Generalized schemes of the occurrence of mechanical failures were summarized, and among them, common features in various cell designs were extracted. They were discussed in three categories of (a) deformation of a cell due to its asymmetry, (b) propagation of mechanical defects, and (c) effects of irregular operations. Prototype-cell experiments were designed to reproduce the key features, and to develop a quantitative evaluation scheme of operational margins for prediction of the short and long term reliability of a specific cell design. Numerical calculation tools based on finite element method and homogenization method are designed. Experimental methods were developed to acquire high-temperature mechanical behaviors of the materials and cell stacks.

Original languageEnglish
Title of host publicationECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
Pages467-472
Number of pages6
Edition2 PART 1
DOIs
Publication statusPublished - 2009 Dec 1
Event11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting - Vienna, Austria
Duration: 2009 Oct 42009 Oct 9

Publication series

NameECS Transactions
Number2 PART 1
Volume25
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
CountryAustria
CityVienna
Period09/10/409/10/9

ASJC Scopus subject areas

  • Engineering(all)

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