Acoustic Emission Characteristic of C/SiC Composite During Creep at High Temperature

Acoustic emission(AE) was used to inspect the creep test at high temperature in real time. A parameter-analyzing approach was introduced to analyze energy, different damage phases and types of damage by AE data. The spectrum of typical AE signals was analyzed to reveal the damage evolution of C/SiC composite during creep. The mechanism in different stages of damage evolution was also differentiated.