This paper presents the fabrication of nanometerscale piezoelectric fiber composites and their potential applications as acoustic emission sensors. The piezoelectric lead zirconate titanate nanofibers, with diameters ranging from 50 to 150 nm, were fabricated by an electrospinning process. Polydimethylsiloxane was chosen as the matrix to produce the active fiber composites. The demonstration of electromechanical coupling of the fabricated nano-active fiber composites showed their applications as acoustic emission sensors for nondestructive materials testing, especially for structures with complex shapes because of the enhanced flexibility of the nano-active fiber
Bent, A.A., N.W. Hagood and J.P. Rodgers, “Anisotropic Actuation with
Piezoelectric Fiber Composites,” Journal of Intelligent Material Systems and
Structures, Vol. 6, 1995, pp. 338–349.
Institute of Radio Engineers, “Standards on Piezoelectric Crystals: Measurements
of Piezoelectric Ceramics,” Proceedings of the IRE, Vol. 49, 1961,
Li, Dan and Younan Xia, “Fabrication of Titania Nanofibers by Electrospinning,”
Nano Letters, Vol. 3, 2003, pp. 555–560.
Li, Dan and Younan Xia, “Electrospinning of Nanofibers: Reinventing the
Wheel?,” Advanced Materials, Vol. 16, No. 4, 2004, pp. 361–366.
Wilkie, W.K., R.G. Bryant, J.W. High, R.L. Fox, R.F. Hellbaum, A. Jalink,
B.D. Little and P.H. Mirick, “Low-Cost Piezocomposite Actuator for Structural
Control Applications,” Proceedings of the 7th SPIE International
Symposium on Smart Structures and Materials, Vol. 3991, 2000, pp.
Williams, B.R., G. Park, D.J. Inman and W.K. Wilkie, “An Overview of
Composite Actuators with Piezoceramic Fibers,” Proceeding of the 20th
International Modal Analysis Conference, Vol. 4753, 2002, pp. 421–427.
Sporn, Dieter and Andreas Schoenecker, “Composite with Piezoelectric
Thin Fiber-First Evidence of Piezoelectric Behavior,” Innovations in Materials
Conference, Washington, DC, 19–22 July 1998.
Xu, Shiyou, Yong Shi and Sang-Gook Kim, “Fabrication and Mechanical
Property of Nano Piezoelectric Fibers,” Nanotechnology, Vol. 17, 2006, pp.