Lead-free piezoceramic macro-fiber composite actuators toward active vibration control systems  

作　　者：Binquan Wang Geng Huangfu Jie Wang Shujun Zhang Yiping Guo 

机构地区：[1]State Key Laboratory of Metal Matrix Composites,School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]Institute for Superconducting and Electronic Materials,Australian Institute for Innovative Materials,University of Wollongong,Wollongong,NSW,2500,Australia

出　　处：《Journal of Materiomics》2024年第1期78-85,共8页无机材料学学报（英文）

基　　金：supported by the Basic Research Project of Science and Technology of Shanghai(No.20JC1415000);the National Natural Science Foundation of China(No.52032012).

摘　　要：Macro-fiber composite actuators(MFCAs)suffer from strict restrictions on the utilization of lead-containing precursors due to growing environmental concerns.To address this issue,a novel lead-free MFCA based on potassium sodium niobate piezoceramics has been developed using the dice&fill method.The MFCA demonstrates large electric field-induced displacement(31.4μm over-500-1500 V at 0.5 Hz),excellent frequency stability,and a strong linear relationship between the induced displacement and the external voltage amplitude.Meanwhile,unlike lead-based MFCA that requires superposition of a negative dc bias voltage to pursue higher output performance but risks depolarization,lead-free MFCA can achieve larger displacement by superimposing only a positive bias voltage.This device exhibits excellent reliability,maintaining a stable output over 10^(5) electrical cycles.Additionally,a“back-to-back”coupled MFCA has been developed to regulate bidirectional displacement,making it suitable for various practical applications,including active vibration control.This approach has resulted in a 90%vibration reduction and provides new insights into the design of MFCAs,further facilitating their application in active vibration control systems.

关 键 词：Lead-free piezoceramic actuator Macro-fiber composite Active vibration control 

分 类 号：TB33[一般工业技术—材料科学与工程] TQ174.1[化学工程—陶瓷工业]