Thermal shock resistance analysis of a semi-infinite ceramic foam

Yang Zhang, Baolin Wang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

This paper considers the fracture mechanics of a ceramic foam under sudden thermal load. The ceramic foam is of semi-infinite and contains an edge crack perpendicular to its surface. The temperature field and transient thermal stress field in un-cracked medium are calculated first. Then, the stresses are used as the crack surface traction with opposite sign to formulate the mixed boundary value problem. Numerical results for the stress and stress intensity factor are calculated as the functions of the thermal shock time, the crack length and the relative density of the foam. Crack propagation behavior and the thermal shock resistance of the ceramic foam are discussed in details.
Original languageEnglish
Pages (from-to)22-30
Number of pages9
JournalInternational Journal of Engineering Science
Volume62
Issue numberJanuary
DOIs
Publication statusPublished - Jan 2013
Externally publishedYes

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Ceramic foams
Thermal shock
Cracks
Thermal load
Fracture mechanics
Thermal stress
Stress intensity factors
Boundary value problems
Foams
Crack propagation
Temperature distribution

Cite this

Zhang, Yang ; Wang, Baolin. / Thermal shock resistance analysis of a semi-infinite ceramic foam. In: International Journal of Engineering Science. 2013 ; Vol. 62, No. January. pp. 22-30.
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Thermal shock resistance analysis of a semi-infinite ceramic foam. / Zhang, Yang; Wang, Baolin.

In: International Journal of Engineering Science, Vol. 62, No. January, 01.2013, p. 22-30.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Wang, Baolin

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N2 - This paper considers the fracture mechanics of a ceramic foam under sudden thermal load. The ceramic foam is of semi-infinite and contains an edge crack perpendicular to its surface. The temperature field and transient thermal stress field in un-cracked medium are calculated first. Then, the stresses are used as the crack surface traction with opposite sign to formulate the mixed boundary value problem. Numerical results for the stress and stress intensity factor are calculated as the functions of the thermal shock time, the crack length and the relative density of the foam. Crack propagation behavior and the thermal shock resistance of the ceramic foam are discussed in details.

AB - This paper considers the fracture mechanics of a ceramic foam under sudden thermal load. The ceramic foam is of semi-infinite and contains an edge crack perpendicular to its surface. The temperature field and transient thermal stress field in un-cracked medium are calculated first. Then, the stresses are used as the crack surface traction with opposite sign to formulate the mixed boundary value problem. Numerical results for the stress and stress intensity factor are calculated as the functions of the thermal shock time, the crack length and the relative density of the foam. Crack propagation behavior and the thermal shock resistance of the ceramic foam are discussed in details.

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