TY - GEN
T1 - Classification of mechanical failures of SOFC and strategy for evaluation of the operational margins
AU - Kawada, T.
AU - Watanabe, S.
AU - Hashimoto, S.
AU - Sakamoto, T.
AU - Unemoto, A.
AU - Kurumatani, M.
AU - Sato, K.
AU - Iguchi, F.
AU - Yashiro, K.
AU - Amezawa, K.
AU - Terada, K.
AU - Kubo, M.
AU - Yugami, H.
AU - Hashida, T.
AU - Mizusaki, J.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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U2 - 10.1149/1.3205556
DO - 10.1149/1.3205556
M3 - Conference contribution
AN - SCOPUS:77649252532
SN - 9781566777391
T3 - ECS Transactions
SP - 467
EP - 472
BT - ECS Transactions - Solid Oxide Fuel Cells 11 (SOFC-XI)
T2 - 11th International Symposium on Solid Oxide Fuel Cells (SOFC-XI)- 216th ECS Meeting
Y2 - 4 October 2009 through 9 October 2009
ER -