Characterization of Piezoelectric Nanofiber Composites Acoustic Emission Sensor for Structure Health Monitoring

2012 ◽  
Author(s):  
Xi Chen ◽  
Yong Shi
Keyword(s):  
Acoustic Emission ◽  
Lead Zirconate Titanate ◽  
High Sensitivity ◽  
Lead Zirconate ◽  
Steel Bar ◽  
Promising Application ◽  
Soft Polymer ◽  
Active Fiber Composites ◽  
The Mathematical Model

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.

Paste Extrusion 3D Printing and Characterization of Lead Zirconate Titanate Piezoelectric Ceramics

2021 ◽  
Author(s):  
Samuel E. Hall ◽  
Jaime E. Regis ◽  
Anabel Renteria ◽  
Luis A. Chavez ◽  
Luis Delfin ◽  
...  
Keyword(s):  
3D Printing ◽  
Lead Zirconate Titanate ◽  
Piezoelectric Ceramics ◽  
Lead Zirconate ◽  
Zirconate Titanate ◽  
Paste Extrusion

Fabrication and Characterization of Sol-Gel Derived PZT/WO3 Ceramics

2008 ◽  
Vol 55-57 ◽  
pp. 369-372 ◽  
Author(s):  
T. Sreesattabud ◽  
Anucha Watcharapasorn ◽  
Sukanda Jiansirisomboon
Keyword(s):  
Lead Zirconate Titanate ◽  
Sol Gel ◽  
Rhombohedral Phase ◽  
Lead Zirconate ◽  
X Ray Diffraction ◽  
Calcination Process ◽  
Materials Used ◽  
Phase Characterization ◽  
Gel Processing

Lead zirconate titanate/tungsten oxide (PZT/WO3) ceramics were prepared from the powders synthesized by a modified triol sol-gel processing method. In this study, the starting materials used for synthesis of PZT-sol were zirconium (IV) propoxide, titanium (IV) isopropxide, lead (II) acetate trihydrate and 1,1,1,- tris (hydroxymethyl) ethane. To prepare PZT/xWO3 powders (where x = 0, 0.5, 1 and 3 wt%), nano-sized WO3 was ultrasonically dispersed and mixed with the PZT sol, dried and calcined at 600°C for 4 h. X-ray diffraction results indicated that fully crystallized powders were obtained. Phase characterization suggested that at high WO3 concentration, the reaction between PZT and WO3 occurred during the calcination process. To prepare PZT/xWO3 ceramics, the powders were pressed and sintered at 1100°C for 6 h. Phase characterization by XRD indicated that the content of WO3 significantly affected tetragonal-to-rhombohedral phase transition. Microstructure of thermally etched samples showed that increasing the content of WO3 decreased grain size of the ceramics.

scholarly journals Theoretical and experimental analysis on deflection control of photovoltaic-electrostatic cantilever beam

2019 ◽  
Vol 11 (7) ◽  
pp. 168781401986328
Author(s):  
Yujuan Tang ◽  
Yusong Chen ◽  
Xinjie Wang ◽  
Zhong Yang
Keyword(s):  
Light Intensity ◽  
Cantilever Beam ◽  
Lead Zirconate Titanate ◽  
Copper Foil ◽  
Lead Zirconate ◽  
Electrical Model ◽  
Zirconate Titanate ◽  
Lead Zirconate Titanate Ceramic ◽  
The Mathematical Model ◽  
Titanate Ceramic

A model of photovoltaic-electrostatic cantilever beam based on lanthanum-modified lead zirconate titanate ceramic is proposed in this article. New equivalent electrical model of lanthanum-modified lead zirconate titanate ceramic connected to a parallel plate composed of two copper foils is obtained by modifying the original lanthanum-modified lead zirconate titanate equivalent electrical model. After that, the mathematical model of photovoltaic-electrostatic cantilever beam is established. Furthermore, the influences of ultraviolet light intensity and copper foil length on the deflection of the photovoltaic-electrostatic cantilever beam are analyzed via the theoretical and experimental methods. The analysis results indicate that the deflection at the free end of cantilever beam increases with the increase in light intensity and length of the copper foil. The photovoltaic-electrostatic flexible cantilever beam can be taken as a micro-actuator with the advantages of remote control and clean drive.

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