Mechanical property characterizations and performance modeling of SOFC seals

Brian J. Koeppel, John S. Vetrano, Ba Nghiep Nguyen, Sun Xin, Moe A. Khaleel

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

1 Citation (Scopus)

Abstract

The objective of this work was to provide a modeling tool for the design of reliable seals for SOFC stacks. The work consisted of experimental testing to determine thermal-mechanical properties of a glass-ceramic sealing material and numerical modeling of stack sealing systems. The material tests captured relevant temperature-dependent property data for Pacific Northwest National Laboratory's (PNNL) G18 sealant material as required by the analytical models. A viscoelastic continuum damage model for this glass-ceramic sealant was developed and implemented in the MSC MARC finite element code and used for a detailed analysis of a planar SOFC stack under thermal cycling conditions. Realistic thermal loads for the stack were obtained using PNNL's multiphysics solver SOFC-MP. The accumulated seal damage and component stresses were evaluated for multiple thermal loading cycles. The seals nearest the stack mount location were most susceptible to damage which began during the first operational cycle and accumulated during shutdown. Viscoelastic seal compliance was also found to beneficially reduce the stresses in the anode.

Original languageEnglish
Title of host publicationCeramic Engineering and Science Proceedings
Pages325-335
Number of pages11
Volume27
Edition4
Publication statusPublished - 1 Dec 2006
Externally publishedYes
EventAdvances in Solid Oxide Fuel Cells II - 30th International Conference on Advanced Ceramics and Composites - Cocoa Beach, FL, United States
Duration: 22 Jan 200627 Jan 2006

Other

OtherAdvances in Solid Oxide Fuel Cells II - 30th International Conference on Advanced Ceramics and Composites
CountryUnited States
CityCocoa Beach, FL
Period22/1/0627/1/06

Fingerprint

Solid oxide fuel cells (SOFC)
Seals
Sealants
Mechanical properties
Glass ceramics
Thermal cycling
Ceramic materials
Thermal load
Analytical models
Anodes
Testing
Temperature
Hot Temperature

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Koeppel, B. J., Vetrano, J. S., Nguyen, B. N., Xin, S., & Khaleel, M. A. (2006). Mechanical property characterizations and performance modeling of SOFC seals. In Ceramic Engineering and Science Proceedings (4 ed., Vol. 27, pp. 325-335)

Mechanical property characterizations and performance modeling of SOFC seals. / Koeppel, Brian J.; Vetrano, John S.; Nguyen, Ba Nghiep; Xin, Sun; Khaleel, Moe A.

Ceramic Engineering and Science Proceedings. Vol. 27 4. ed. 2006. p. 325-335.

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

Koeppel, BJ, Vetrano, JS, Nguyen, BN, Xin, S & Khaleel, MA 2006, Mechanical property characterizations and performance modeling of SOFC seals. in Ceramic Engineering and Science Proceedings. 4 edn, vol. 27, pp. 325-335, Advances in Solid Oxide Fuel Cells II - 30th International Conference on Advanced Ceramics and Composites, Cocoa Beach, FL, United States, 22/1/06.
Koeppel BJ, Vetrano JS, Nguyen BN, Xin S, Khaleel MA. Mechanical property characterizations and performance modeling of SOFC seals. In Ceramic Engineering and Science Proceedings. 4 ed. Vol. 27. 2006. p. 325-335
Koeppel, Brian J. ; Vetrano, John S. ; Nguyen, Ba Nghiep ; Xin, Sun ; Khaleel, Moe A. / Mechanical property characterizations and performance modeling of SOFC seals. Ceramic Engineering and Science Proceedings. Vol. 27 4. ed. 2006. pp. 325-335
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