Simulation of interfacial cracking of the joint between glass-ceramic sealant and metallic interconnect in a planar solid oxide fuel cell stack

Chih Kuang Lin, Wei Hong Shiu, Si Han Wu, Ruey Yi Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Interfacial cracking in the joint between glass-ceramic sealant and metallic interconnect under thermal stresses is characterized for a prototypical planar solid oxide fuel cell (pSOFC) stack, using finite element analysis (FEA). A three dimensional FEA model is constructed for a multiple-cell stack to perform thermal stress analysis at both steady operation and shutdown stages and to locate the highly stressed region in each component. Stress intensity factor and energy release rate for fracture are calculated for each stage at the crack front of a crack placed at the highly stressed interfacial region between glass-ceramic sealant and metallic interconnect. The critical crack/defect size at the interface of such a joint in the given pSOFC stack is determined to be 70 μm by comparing the calculated energy release rates with the experimental measurements of interfacial fracture energy.

Original languageEnglish
Title of host publicationSolid Oxide Fuel Cells 14, SOFC 2015
EditorsK. Eguchi, S. C. Singhal
PublisherElectrochemical Society Inc.
Pages2981-2990
Number of pages10
Edition1
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2015
Event14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage - Glasgow, United Kingdom
Duration: 26 Jul 201531 Jul 2015

Publication series

NameECS Transactions
Number1
Volume68
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference14th International Symposium on Solid Oxide Fuel Cells, SOFC 2015; held as part of the Electrochemical Society, ECS Conference on Electrochemical Energy Conversion and Storage
Country/TerritoryUnited Kingdom
CityGlasgow
Period26/07/1531/07/15

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