Abstract
The deformation of cross-ply ceramic-matrix composite laminates under biaxial loading is studied theoretically. Experimentally, microscopic damage evolution in cross-ply ceramic-matrix composite laminates has not been well characterized yet, mainly due to the difficulties involved in testing of anisotropic plates under biaxial loading. It is assumed that the initial damage mechanism observed in ceramic-matrix composite laminates is the formation of tunneling macrocracks both in the 90 degrees- and 0 degrees-plies. The paper addresses the stiffness-deterioration behavior of cross-ply ceramic-matrix laminates with transverse and longitudinal macrocracks. The analysis is based on the equivalent-constraint model of a damaged laminate. Numerical results for SiC/CAS cross-ply laminates of various lay-ups are presented and discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 24-31 |
| Number of pages | 7 |
| Journal | International Applied Mechanics |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2005 |
Keywords
- cross-ply ceramic-matrix composite laminates
- biaxial loading
- tunneling macrocracks
- equivalent-constraint model
- elevated temperatures
- stiffness properties
- damage evolution
- behavior
- delaminations
- microdamage
- frequencies
- mechanisms
- beams
- room