STUDY ON MECHANICAL-ELECTRICAL RESPONSE CHARACTERISTICS OF 2-2 CEMENT-BASED PIEZOELECTRIC COMPOSITES
2-2 cement-based piezoelectric composites were prepared by cutting-casting method.The effects of different loading amplitudes and frequencies on the mechanical-electrical response characteristics of 2-2 cement-based piezoelectric composites were studied by a material testing machine (MTS810).The research shows that the samples have better frequency response under quasi-static loading;the output electrical signal has a good linear relationship with the loading amplitude.The effect of different loading strain rates on the mechanical-electrical response characteristics of 2-2 cement-based piezoelectric composites was studied by a split Hopkinson pressure bar (SHPB) test device.The present work shows that under single impact loading,with loading strain rate increasing,the output electric displacement increases accordingly.When the strain rate reaches 258s-1,the output electric displacement does not increase substantially and remains unchanged.Within a certain range,2-2 cement-based piezoelectric composites have linear characteristics and frequency response characteristics,which provide an important reference for sensor fabrication.
2-2 cement-based piezoelectric composites Quasi-static loading Impact loading Mechanical-electrical response
Peng-ju FENG Wen-jie CHENG Teng WANG Jiang-ying CHEN
Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, 315211, P.R.China;Key Laboratory of Impact and Safety Engineering (Ningbo University), Ministry of Education, Ningbo, 315211, P.R.China
国际会议
石家庄
英文
263-267
2019-11-01（万方平台首次上网日期，不代表论文的发表时间）