基于应力对磁性纤维嵌入复合材料的健康监测研究  

Research on Health Monitoring of Composite Materials Embedded with Stress-Sensitive Magnetic Fibers

作　　者：李婵 陈永当[1] 王海飞 胡师源 封莹莹 辛诚 LI Chan;CHEN Yong-dang;WANG Hai-fei;HU Shi-yuan;FENG Ying-ying;XIN Cheng(School of Mechanical and Electrical Engineering,Xi'an Polytechnic University,Xi'an 710600,Shaanxi,China)

机构地区：[1]西安工程大学机电工程学院,陕西西安710600

出　　处：《合成纤维》2024年第3期60-65,共6页Synthetic Fiber in China

摘　　要：分析了磁性纤维在环氧树脂液滴中应力传递性能和响应特性,证明了磁性纤维能有效传递应力且具有快速响应的能力,进一步分析了磁性纤维嵌入树脂后,在不同拉伸应力和电流频率下,阻抗随外界应力的变化规律。研究表明:磁性纤维的阻抗均随拉伸应力的增加呈先增后减趋势,随激励频率增加而增大;此外,去除玻璃层后,磁性纤维对外界应力的响应范围更广,表现出更为灵敏的特性。因此,磁性纤维可作为传感材料嵌入复合材料,实时监测复合材料应力变化并预测损伤的发生。The stress transfer performance and response characteristics of magnetic fibers embedded in epoxy resin droplets were analyzed,demonstrating their effective stress transfer capability and fast response.Furthermore,the impedance variations of magnetic fibers under different tensile stresses and excitation frequencies were investigated after embedding them in the resin.The study reveals that the impedance of magnetic fibers exhibits an initial increase followed by a decrease with increasing tensile stress,while it increases with higher excitation frequencies.Additionally,removing the glass layer broadens the range of stress response and enhances the sensitivity of magnetic fibers to external stresses.Therefore,magnetic fibers can be embedded as sensing materials in composite structures to monitor real-time stress changes and predict damage occurrence.

关 键 词：磁性纤维 拉应力 巨磁阻抗 健康监测 

分 类 号：TB333[一般工业技术—材料科学与工程] TQ342.8[化学工程—化纤工业]