The effect of damage and temperature on electrical impedance of SiCf/SiC mini-composites and a preliminary decoupling method

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-03-22 DOI:10.1016/j.jeurceramsoc.2025.117388

Beichen Xue , Guoqiang Yu , Jiaming Li , Zheng Ni , Wenbing Ma , Zhengqing Sui , Xiguang Gao , Yingdong Song

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Abstract

This letter presents a preliminary method for decoupling and monitoring damage and temperature in SiC fiber-reinforced SiC matrix mini-composites using electrical impedance. The impact of damage on impedance characteristics during uniaxial tension is elucidated by decomposing the impedance data into real and imaginary components. An equivalent circuit model, which accounts for the influence of electrode effects, is developed to interpret the experimental findings. Impedance measurements were conducted on pristine and pre-damaged specimens under a temperature-controlled environment at frequencies ranging from 10 Hz to 5 MHz. The reactance is found to be strongly correlated with damage progression and remains unaffected by changes in resistivity due to thermoresistive effects. This finding facilitates the decoupling and concurrent monitoring of damage and temperature conditions in ceramic matrix composite structures using only electrical impedance.

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损伤和温度对 SiCf/SiC 微型复合材料电阻抗的影响及初步去耦方法

本文提出了一种利用电阻抗对碳化硅纤维增强碳化硅基微型复合材料进行解耦和监测损伤和温度的初步方法。通过将阻抗数据分解为实分量和虚分量，阐明了损伤对单轴拉伸时阻抗特性的影响。建立了一个考虑电极效应影响的等效电路模型来解释实验结果。在温度控制的环境下，在10 Hz到5 MHz的频率范围内对原始和预损坏的样品进行阻抗测量。发现电抗与损伤进展密切相关，并且由于热阻效应而不受电阻率变化的影响。这一发现有助于仅使用电阻抗对陶瓷基复合材料结构的损伤和温度条件进行解耦和同步监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.