A nanoscale active fiber composites (NAFCs) based acoustic emission (AE) sensor with high sensitivity is developed. The lead zirconate titanate (PZT) nanofibers, with the diameter of approximately 80 nm, were electrospun on a silicon substrate. Nanofibers were parallel aligned on the substrate under a controlled electric field. The interdigitated electrodes were deposited on the PZT nanofibers and packaged by spinning a thin soft polymer layer on the top of the sensor. The hysteresis loop shows a typical ferroelectric property of as-spun PZT nanofibers. The mathematical model of the voltage generation when the elastic waves were reaching the sensor was studied. The sensor was tested by mounting on a steel surface and the measured output voltage under the periodic impact of a grounded steel bar was over 35 mV. The small size of the developed PZT NAFCs AE sensor shows a promising application in monitoring the structures by integration into composites.
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ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 12–15, 2012
Chicago, Illinois, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-4504-2
PROCEEDINGS PAPER
Characterization of Piezoelectric Nanofiber Composites Acoustic Emission Sensor for Structure Health Monitoring
Xi Chen
Stevens Institute of Technology, Hoboken, NJ
Yong Shi
Stevens Institute of Technology, Hoboken, NJ
Paper No:
DETC2012-71538, pp. 247-251; 5 pages
Published Online:
September 9, 2013
Citation
Chen, X, & Shi, Y. "Characterization of Piezoelectric Nanofiber Composites Acoustic Emission Sensor for Structure Health Monitoring." Proceedings of the ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 5: 6th International Conference on Micro- and Nanosystems; 17th Design for Manufacturing and the Life Cycle Conference. Chicago, Illinois, USA. August 12–15, 2012. pp. 247-251. ASME. https://doi.org/10.1115/DETC2012-71538
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