Functionally Graded Materials with Periodic Cracks Subjected to Transient Loading |
| Journal |
Key Engineering Materials (Volume 312) |
| Volume |
Fracture of Materials: Moving Forwards |
| Edited by |
Hong-Yuan Liu, Xiaozhi Hu and Mark Hoffman |
| Pages |
47-52 |
| DOI |
10.4028/www.scientific.net/KEM.312.47 |
| Online since |
June, 2006 |
| Authors |
Jie Cai Han,
Bao Lin Wang
|
| Keywords |
Crack, Dynamic Fracture Mechanics, Fracture Mechanics, Functionally Graded Material (FGM) |
| Abstract |
A periodic array of cracks in a functionally graded material under transient mechanical loading is investigated. Anti-plane shear loading condition is considered. A singular integral equation is derived, in which the crack surface displacement is the unknown function. Numerical results are obtained to illustrate the variations of the stress intensity factors as a function of the crack periodicity for different values of the material nonhomogeneity, either at the transient state or at the steady state. The material non-homogeneity can increase or reduce the stress intensity factors.
Comparing with the single crack solution, it can be shown that multiple cracking can reduce the stress intensity factor significantly. |
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