Prediction of crack propagation paths in the unit cell of sofc stacks

N. Joulaee; A. Makradi; S. Ahzi; M. A. Khaleel; B. K. Koeppel

doi:10.1007/s10999-009-9095-5

Prediction of crack propagation paths in the unit cell of sofc stacks

N. Joulaee, A. Makradi, S. Ahzi, M. A. Khaleel, B. K. Koeppel

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Planar Solid Oxide Fuel Cells (SOFC) stacks are multi-material layered systems with different thermo-mechanical properties. Due to their severe thermal loading, these layers have to meet high demands to preserve their mechanical integrity without any cracks initiation and propagation. In this paper, cracks propagation in a typical unit cell of the stack which consists of positive electrode-electrolyte-negative electrode (PEN) is modeled. Based on the mechanical properties of each layer and their interfaces, an energy criterion as a function of crack length is used for the prediction of possible crack extensions in the PEN. An analysis of the competition between crack deflections in the interfaces and crack penetration in layers is presented.

Original language	English
Pages (from-to)	217-230
Number of pages	14
Journal	International Journal of Mechanics and Materials in Design
Volume	5
Issue number	3
DOIs	https://doi.org/10.1007/s10999-009-9095-5
State	Published - Aug 2009
Externally published	Yes

Keywords

Crack propagation
Fracture analysis
PEN
Solid oxide fuel cells

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s10999-009-9095-5

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title = "Prediction of crack propagation paths in the unit cell of sofc stacks",

abstract = "Planar Solid Oxide Fuel Cells (SOFC) stacks are multi-material layered systems with different thermo-mechanical properties. Due to their severe thermal loading, these layers have to meet high demands to preserve their mechanical integrity without any cracks initiation and propagation. In this paper, cracks propagation in a typical unit cell of the stack which consists of positive electrode-electrolyte-negative electrode (PEN) is modeled. Based on the mechanical properties of each layer and their interfaces, an energy criterion as a function of crack length is used for the prediction of possible crack extensions in the PEN. An analysis of the competition between crack deflections in the interfaces and crack penetration in layers is presented.",

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AU - Joulaee, N.

AU - Makradi, A.

AU - Ahzi, S.

AU - Khaleel, M. A.

AU - Koeppel, B. K.

PY - 2009/8

Y1 - 2009/8

N2 - Planar Solid Oxide Fuel Cells (SOFC) stacks are multi-material layered systems with different thermo-mechanical properties. Due to their severe thermal loading, these layers have to meet high demands to preserve their mechanical integrity without any cracks initiation and propagation. In this paper, cracks propagation in a typical unit cell of the stack which consists of positive electrode-electrolyte-negative electrode (PEN) is modeled. Based on the mechanical properties of each layer and their interfaces, an energy criterion as a function of crack length is used for the prediction of possible crack extensions in the PEN. An analysis of the competition between crack deflections in the interfaces and crack penetration in layers is presented.

AB - Planar Solid Oxide Fuel Cells (SOFC) stacks are multi-material layered systems with different thermo-mechanical properties. Due to their severe thermal loading, these layers have to meet high demands to preserve their mechanical integrity without any cracks initiation and propagation. In this paper, cracks propagation in a typical unit cell of the stack which consists of positive electrode-electrolyte-negative electrode (PEN) is modeled. Based on the mechanical properties of each layer and their interfaces, an energy criterion as a function of crack length is used for the prediction of possible crack extensions in the PEN. An analysis of the competition between crack deflections in the interfaces and crack penetration in layers is presented.

KW - Crack propagation

KW - Fracture analysis

KW - PEN

KW - Solid oxide fuel cells

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JF - International Journal of Mechanics and Materials in Design

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ER -

Prediction of crack propagation paths in the unit cell of sofc stacks

Abstract

Keywords

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