Loading...
Please wait, while we are loading the content...
Similar Documents
Apport de l'émission acoustique pour la modélisation de l'endommagement des composites à matrice céramique
| Content Provider | Semantic Scholar |
|---|---|
| Author | Godin, N. R'Mili, Mohamed Reynaud, Pascal Fantozzi, Gilbert Fayolle, G. |
| Copyright Year | 2013 |
| Abstract | Ceramic matrix composites (CMC) are interesting structural materials for high temperature applications, owing to their good mechanical properties at elevated temperatures. SiCf/SiC composites have been developed for aeronautic and aerospace applications. Detection and analysis of acoustic emission (AE) are powerful means for identification of damage phenomena and monitoring of their evolution. It is generally accepted that the energy of an AE signal represents a part of the energy released at the source. The recorded AE signal energy is affected by distance of wave propagation, energy attenuation due to damage. By using the energy recorded by two sensors, it is possible to evaluate energy attenuation (noted B) in real-time. For ceramic matrix composites under static fatigue loading, a significant increase of energy attenuation is observed during the first half of tests. This increase is associated to transverse matrix crack opening. Mots clefs: CMC, Emission acoustique, Endommagement mecanique, Durabilite |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://documents.irevues.inist.fr/bitstream/handle/2042/52254/a_LF2R81AZ.pdf?sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
