Influence of different matrix on the properties of 1-3 piezoelectric composites

Title: Influence of different matrix on the properties of 1-3 piezoelectric composites
Author(s): Y. Liu, S. Huang, D. Xu, X. Cheng
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 1411 - 1415
Total Pages: 5
Nb references: 9
Language: English

Abstract: 1-3 piezoelectric composites were fabricated by the cut-filling method, using PLN ceramic as function, cement and polymer as matrix. The fabrication procedure of composites was introduced in detail. The effect of different matrix on the piezoelectric properties, dielectric properties, the electromechanical coupling coefficients and acoustic impedance of composites were studied. The results indicate that with the same size and space of the piezoelectric ceramic rods and the same volume fraction, the composites with different matrix have great influence on piezoelectric stain factor d33, while polymer-based piezoelectric composite d33 is significantly higher than that of the cement-based composite. However, different matrix have little effect on the piezoelectric voltage factor g33, and the composite fabricated using polymer as matrix has larger thickness electromechanical coupling factor Kt, less dielectric loss and mechanical quality factor Qm. The acoustic impedance of cement based piezoelectric composite is close to that of polymer based composite, which means the matrix of composites impact on acoustic impedance weakly. But the acoustic impedance of the polymer-based piezoelectric composite is more close to that of the concrete comparing with cement-based composite. Adjusting volume fraction of ceramic rods can resolve efficaciously the matching problem of the acoustic impedance of the intelligent material, which also shows that the 1-3 piezoelectric composite is suitable to be applied in civil structural health monitoring.

Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00

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