Transient thermal stress analysis of an interior crack in functionally graded materials

Zhi He Jin, Glaucio H. Paulino

Research output: Contribution to journalArticlepeer-review

Abstract

An internal crack in a strip of a functionally graded material (FGM) is studied under transient thermal loading conditions. The FGM is assumed having constant Young's modulus and Poisson's ratio, but the thermal properties of the material vary along the thickness direction of the strip. Thus the material is elastically homogeneous but thermally nonhomogeneous. This kind of FGMs include some ceramic/ceramic FGMs such as TiC/SiC and MoSi2/Al2O3, and also some ceramic/metal FGMs such as zirconia/nickel and zirconia/steel. Thermal stress intensity factors (TSIFs) are calculated for a TiC/SiC FGM with various volume fraction profiles of the constituent materials. It is found that the TSIF could be reduced if the thermally shocked cracked edge of the FGM strip is pure TiC.

Original languageEnglish (US)
Pages (from-to)121-125
Number of pages5
JournalAmerican Society of Mechanical Engineers, Aerospace Division (Publication) AD
Volume60
StatePublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Space and Planetary Science

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