Carbon Nanotube Coated Piezoelectric Ceramic for Self-Health-Monitoring

##plugins.themes.bootstrap3.article.main##

##plugins.themes.bootstrap3.article.sidebar##

Published Mar 26, 2021
Lunwei Zhang Giulia Lanzara Fu-Kuo Chang

Abstract

The sensor signal of Lead Zirconate Titanate (PZT) piezoelectric sensors/actuator surface mounted to a structure with a thin adhesive layer is known to be influenced by the bondline quality and integrity. Monitoring the bondline health of sensor/actuators integrated into structures is becoming a major concern to guarantee the success and reliability of Structural Health Management systems. The design of a carbon-nanotube-coated PZT (CPZT) sensor was presented in earlier work shown that the bondline of CPZTs mounted on a structure, can be up to 274% stronger than that of conventional PZTs. A CPZT consists of a standard PZT surface coated with a high-density array of oriented CNT- nanoelectrodes (CNTs-NEA). The CNTs-NEA in the interface plays the role of electrodes and of reinforcing filler material. This paper presents results indicating that CPZTs have better performance than conventional PZTs because CNTs in the interface can additionally allow monitoring the bondline integrity during manufacturing and in-service life of a structure. Tests were performed on CPZTs surface mounted on a metal structure with a thin non- conductive adhesive layer. CNTs in the interface were used to monitor adhesive curing by detecting electrical resistance variations of the interface due to phase changes in the adhesive during curing. Crack and debond formation in the interface were monitored in a similar approach.The CPZT is unique in that it is the only existing PZT that, not only has a stronger interface, but is also capable of self-monitoring the health of its bondline which is essential for accurate and reliable SHM systems

How to Cite

Zhang, L., Lanzara, G., & Chang, F.-K. (2021). Carbon Nanotube Coated Piezoelectric Ceramic for Self-Health-Monitoring. Annual Conference of the PHM Society, 1(1). Retrieved from https://papers.phmsociety.org/index.php/phmconf/article/view/1469
Abstract 4 | PDF Downloads 1

##plugins.themes.bootstrap3.article.details##

Keywords

piezoelectric sensor, structural health monitoring

References
(Lanzara,2009a) G. Lanzara and F.-K. Chang (2009a). Design and Characterization of a carbon nanotube- reinforced adhesive coating for piezoelectric ceramic discs, Smart Materials and Structures, in Press.
(Lanzara,2009b) G. Lanzara, Y. Yoon, Y. Kim, F.-K. Chang (2009b). Influence of Interface Degradation on the Performance of Piezoelectric Actuators, Journal of Intelligent Material Systems and Structures, vol. 20, pp 1699-1710.
(Lin ,2002) M. Lin and F.-K. Chang (2002). The Manufacture of Composite Structures with a Built-in Network of Piezoceramics, Composites science and Technologies, vol. 62:7-8, pp 919-939.
(M. Lin, 2001). M. Lin, et al., SMART Layer and Smart Suitcase for Structural Health Monitoring Applications, in Proceedings of SPIE on smart structures and material systems, SPIE Optical Engineering Press.
(Shigue,2004) C. Y. Shigue, R. G. S. dos Santos, C. A. Baldan, and E. Ruppert-Filho (2004). Monitoring the Epoxy Curing by the Dielectric Thermal Analysis Method, IEEE Transactions on Applied Superconductivity, vol. 14: 2, pp1173-1176.
(Staszewski,2003) W. J. Staszewski, G. Tomlinson, C. Boller (2003). Health Monitoring of Aerospace Structures: Smart Sensor Technologies and Signal Processing, New York: Wiley.
Section
Technical Papers