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Published on: September 28, 2015
Ultrasonic Sensing and Actuation in Laminate Structures Using Bondline-Embedded d35 Piezoelectric Sensors
Hussain Altammar1, Anoop Dhingra2, Nathan Salowitz3
1Mechanical Engineering Department, University of Wisconsin, Milwaukee, WI 53211, USA. Altammar@UWM.edu.
Embedded shear-mode (d35) piezoelectric transducers show promise for ultrasonic structural health monitoring (SHM). These lead zirconate titanate (PZT) sensors selectively detect wave modes, simplifying signal analysis in laminate structures.
Area of Science:
- Materials Science
- Mechanical Engineering
- Nondestructive Testing
Background:
- Ultrasonic systems utilize embedded piezoelectric transducers for sensing and actuation.
- Structural Health Monitoring (SHM) relies on analyzing wave propagation modes in structures.
Purpose of the Study:
- Investigate sensing and actuation properties of embedded shear-mode (d35) lead zirconate titanate (PZT) transducers.
- Evaluate PZT transducer size effects on actuation and sensing in laminate structures.
- Assess the selectivity of d35 PZT sensors for different wave propagation modes.
Main Methods:
- Analytical analysis and finite element simulation of piezoelectric elements and laminate structures.
- Experimental validation of the developed models.
- Parametric study on transducer size and wave mode selectivity.
Main Results:
- Embedded d35 PZT transducers demonstrate effective sensing and actuation capabilities.
- Transducer size impacts actuation strength and sensing output signal.
- d35 PZT sensors exhibit selectivity, detecting specific wave propagation modes.
Conclusions:
- Embedded d35 PZT transducers offer potential for ultrasonic SHM applications.
- The inherent selectivity of d35 PZT sensors acts as a hardware filter, simplifying signal processing.
- Further application of embedded d35 PZTs in bondlines is indicated for SHM.
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