期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 42, 期 10, 页码 4144-4153出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2022.04.001
关键词
C; SiC composites; Electrical impedance; Damage monitoring; Macroscopic equivalent circuit model
资金
- Young Elite Scientists Sponsorship Program by CAST [2021QNRC001]
- National Natural Science Founda-tion of China [11902101]
- Science and Technology on Scramjet Laboratory Foundation [WDZC614270303202002]
The AC impedance response to damage in C/SiC composites was investigated. Results showed that the longitudinal deformation increases the impedance magnitude and the phase angle, while the damage causes the impedance magnitude to increase and the phase angle to decrease. The phase angle is significantly sensitive to fiber breakage, making AC-based method more suitable for online damage monitoring and final failure warning.
The electrical properties of C/SiC composites could be used for online and in-situ damage monitoring. To investigate alternating current (AC) impedance response to damage in the C/SiC composites, monotonic and incremental cyclic tensile tests were performed. Both AC impedance and acoustic emission (AE) techniques were applied to clarify the damage evolution during the tests. The relationship between damage and electrical impedance response was investigated and validated via macroscopic equivalent circuit models. The effects of longitudinal deformation and damage on AC impedance characteristics, including impedance magnitude and phase angle, were obtained from the models. Results showed that the longitudinal deformation increases the impedance magnitude and the phase angle, and the damage causes the impedance magnitude to increase and the phase angle to decrease. The phase angle is significantly sensitive to fiber breakage, which makes the AC-based method more suitable for online damage monitoring and final failure warning.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据