Abstract
Acoustic emission (AE) characteristic of alumina under compressive loading was investigated by experimental method. During three-point-bending test and Brazilian test, advanced multi-channel acoustic emission system was used to detect the failure of alumina. Analyzing the results of acoustic emission, AE energy, AE counts and AE hits changing with loading time reflect the process which is from the growth and evolution of micro-crack to macro-fracture of material. AE parameters are used to determine the location of fracture surface. By micro-macro characteristics, micro-cracks around particles are dominated the brittle fracture of alumina.
| Original language | English |
|---|---|
| Pages (from-to) | 30-34+54 |
| Journal | Cailiao Gongcheng/Journal of Materials Engineering |
| Issue number | 2 |
| Publication status | Published - Feb 2012 |
Keywords
- Acoustic emission
- Brazilian test
- Three-point-bending test