[7] [7] YAJUN Z,QIAN Q.Anew type of automatic monitoring system of static and dynamic displacement on dam and slope［J］.Procedia Engineering,2012,43:387-392.

[13] [13] ZHANG Jinying,WANG Jiacheng,ZHONG Chao,et al.1-3-type piezoelectric composites with three-layer cascade structure［J］.Composite Structures,2023,322:117406.

[14] [14] LI Li,WANG Likun,QIN Lei,et al.The theoretical model for 1-3-2 piezoelectric composites ［J］,Ferroelectrics,2007,350(1):29-37.

[15] [15] QIN Lei,ZHONG Chao,LIAO Qingwei,et al.The experimental study on 1-1-3 piezoelectric composite ［J］.Ferroelectrics,2018,537(1):151-160.

[16] [16] HE Cunfu,WANG Yaoyao,LU Yan,et al.Design and Fabrication of air-based 1-3 piezoelectric composite transducer for air-coupled ultrasonic applications［J］.Journal of Sensors,2016,2016(5):4982616.

[17] [17] ROUFFAUD R,LEVASSORT F,THI M P,et al.Super-cell piezoelectric composite with 1-3 connectivity［J］.IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control,2016,63(12):2215-2223.

[18] [18] CHAN H,UNSWORTH J.Simple model for piezoelectric ceramic/polymer 1-3 composites used in ultrasonic transducer applications［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,1989,36(4):434-441.

[19] [19] IEEE 179-1961.IEEE Standards on piezoelectric crystals:Measurements of piezoelectric ceramics［S］.1961.