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 | |
| Publication status | Published - Mar 2005 |
| Externally published | Yes |
Keywords
- Crack
- Fracture
- Functionally graded materials
- Thermal stresses
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- General Engineering
- Mechanical Engineering