A periodic array of cracks in functional graded materials subjected to thermo-mechanical loading

B. L. Wang; Y.-W. Mai

doi:10.1016/j.ijengsci.2004.10.004

A periodic array of cracks in functional graded materials subjected to thermo-mechanical loading

B. L. Wang, Y.-W. Mai

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

28 Citations (Scopus)

Abstract

A periodic array of cracks in an infinite functionally graded material under mechanical and/or thermal loading is investigated. Due to non-uniform heating or cooling, compressive stresses occur causing the crack surfaces to come into contact at a certain contact length. The mixed boundary value problem is reduced to a singular integral equation with the crack contact length as an additional unknown variable. Numerical results for stress intensity factors and the crack contact length are obtained as a function of crack spacing. Effect of the material non-homogeneity on the crack tip intensity factors is discussed. Some suggestions are made for the design of thermal resistive functionally graded materials.

Original language	English
Pages (from-to)	432-446
Number of pages	15
Journal	International Journal of Engineering Science
Volume	43
Issue number	5-6
DOIs	https://doi.org/10.1016/j.ijengsci.2004.10.004
Publication status	Published - Mar 2005

Keywords

cracks
fractures
thermal stresses
Functionally graded materials
Fracture
Thermal stresses
Crack

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10.1016/j.ijengsci.2004.10.004

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title = "A periodic array of cracks in functional graded materials subjected to thermo-mechanical loading",

abstract = "A periodic array of cracks in an infinite functionally graded material under mechanical and/or thermal loading is investigated. Due to non-uniform heating or cooling, compressive stresses occur causing the crack surfaces to come into contact at a certain contact length. The mixed boundary value problem is reduced to a singular integral equation with the crack contact length as an additional unknown variable. Numerical results for stress intensity factors and the crack contact length are obtained as a function of crack spacing. Effect of the material non-homogeneity on the crack tip intensity factors is discussed. Some suggestions are made for the design of thermal resistive functionally graded materials.",

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AU - Mai, Y.-W.

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N2 - A periodic array of cracks in an infinite functionally graded material under mechanical and/or thermal loading is investigated. Due to non-uniform heating or cooling, compressive stresses occur causing the crack surfaces to come into contact at a certain contact length. The mixed boundary value problem is reduced to a singular integral equation with the crack contact length as an additional unknown variable. Numerical results for stress intensity factors and the crack contact length are obtained as a function of crack spacing. Effect of the material non-homogeneity on the crack tip intensity factors is discussed. Some suggestions are made for the design of thermal resistive functionally graded materials.

AB - A periodic array of cracks in an infinite functionally graded material under mechanical and/or thermal loading is investigated. Due to non-uniform heating or cooling, compressive stresses occur causing the crack surfaces to come into contact at a certain contact length. The mixed boundary value problem is reduced to a singular integral equation with the crack contact length as an additional unknown variable. Numerical results for stress intensity factors and the crack contact length are obtained as a function of crack spacing. Effect of the material non-homogeneity on the crack tip intensity factors is discussed. Some suggestions are made for the design of thermal resistive functionally graded materials.

KW - cracks

KW - fractures

KW - thermal stresses

KW - Functionally graded materials

KW - Fracture

KW - Thermal stresses

KW - Crack

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:46916

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DO - 10.1016/j.ijengsci.2004.10.004

M3 - Article

SN - 0020-7225

VL - 43

SP - 432

EP - 446

JO - International Journal of Engineering Science

JF - International Journal of Engineering Science

IS - 5-6

ER -

A periodic array of cracks in functional graded materials subjected to thermo-mechanical loading

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Keywords

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