Numerical Characteriztion of the Fracture Behavior of Solid Oxide Fuel Cell Materials by Means of Modified Boundary Layer Modeling

Conference · Thu Jan 01 00:00:00 EST 2004

OSTI ID:908511

Nguyen, Ba Nghiep; Koeppel, Brian J; Singh, Prabhakar; Khaleel, Mohammad A; Ahzi, Said

A modified boundary layer modeling approach is used to predict the fracture toughness and crack resistance behaviors of solid oxide fuel cell (SOFC) materials. In this approach, a pre-existing crack inside a layer or at an interface between two different layers is assumed under plane strain conditions. Fracture is allowed to occur in a small process window situated at the crack tip. The process window is contained in a circular region, which can involve two different materials and their interface. Elastic asymptotic crack-tip fields are prescribed as remote boundary conditions. Special attention focuses on the cracking of the interface between the glass seal and the electrolyte material.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 908511
• Report Number(s): PNNL-SA-40285; HI0100000; TRN: US200722%%685
• Resource Relation: Conference: 28th International Conference and Exposition on Advanced Ceramics and Composites, 25-30 Jan. 2004, Cocoa Beach, FL, USA. Published in: Ceramic Engineering and Science Proceedings, 25(3):393-399
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
BOUNDARY CONDITIONS
BOUNDARY LAYERS
CERAMICS
ELECTROLYTES
FRACTURE PROPERTIES
FRACTURES
GLASS
SIMULATION
SOLID OXIDE FUEL CELLS
STRAINS
COMPOSITE MATERIALS
Modified boundary layer modeling
fracture toughness
crack resistance
solid oxide fuel cell (SOFC)