Development and Test of High-Temperature Piezoelectric Wafer Active Sensors for Structural Health Monitoring

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Description

High-temperature piezoelectric wafer active sensors (HT-PWAS) have been developed for structure health monitoring at hazard environments for decades. Different candidates have previously been tested under 270 °C and a new piezoelectric material langasite (LGS) was chosen here for a pilot study up to 700 °C. A preliminary study was performed to develop a high temperature sensor that utilizes langasite material. The Electromechanical impedance (E/M) method was chosen to detect the piezoelectric property. Experiments that verify the basic piezoelectric property of LGS at high temperature environments were carried out. Further validations were conducted by testing structures with attached LGS sensors at ... continued below

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vii, 48 pages : illustrations (some color)

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Bao, Yuanye December 2014.

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This thesis is part of the collection entitled: UNT Theses and Dissertations and was provided by UNT Libraries to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 61 times . More information about this thesis can be viewed below.

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  • Bao, Yuanye

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High-temperature piezoelectric wafer active sensors (HT-PWAS) have been developed for structure health monitoring at hazard environments for decades. Different candidates have previously been tested under 270 °C and a new piezoelectric material langasite (LGS) was chosen here for a pilot study up to 700 °C. A preliminary study was performed to develop a high temperature sensor that utilizes langasite material. The Electromechanical impedance (E/M) method was chosen to detect the piezoelectric property. Experiments that verify the basic piezoelectric property of LGS at high temperature environments were carried out. Further validations were conducted by testing structures with attached LGS sensors at elevated temperature. Additionally, a detection system simulating the working process of LGS monitoring system was developed with PZT material at room temperature. This thesis, for the first time, (to the best of author’s knowledge) presents that langasite is ideal for making piezoelectric wafer active sensors for high temperature structure health monitoring applications.

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vii, 48 pages : illustrations (some color)

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UNT Theses and Dissertations

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  • December 2014

Added to The UNT Digital Library

  • Feb. 2, 2016, 1:35 p.m.

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  • Nov. 15, 2016, 10:51 a.m.

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Citations, Rights, Re-Use

Bao, Yuanye. Development and Test of High-Temperature Piezoelectric Wafer Active Sensors for Structural Health Monitoring, thesis, December 2014; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc799504/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .