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Characterization and Design of Spiral Frequency Steerable Acoustic Transducers

Repale, Rohan
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1387416019

Abstract Details

2014, Master of Science in Electrical Engineering, University of Toledo, College of Engineering.
Structural Health Monitoring (SHM) is an emerging research area devoted to improving the safety and maintainability of civil structures. Guided wave structural testing method is an effective approach used for SHM of plate-like structures using piezoelectric transducers. These transducers are attached to the surface of the structure and are capable of sensing its health by using surface waves. Transducers with beam steering i.e. electronic scanning capabilities can perform surface interrogation with higher precision and ease. A frequency steerable acoustic transducer (FSAT) is capable of beam steering and directional surface wave sensing to detect and localize damage in structures. The objective of this research is to further explore the possibilities of FSAT technology by designing and testing new FSAT designs. The beam steering capability of FSAT can be controlled by manipulating its design parameters. These design parameters therefore play a significant role in FSAT's performance. Studying the design parameters and documenting the performance improvements based on parameter variation is the primary goal of this research. Design and characterization of spiral FSAT was performed and results were simulated. Array FSAT documented results were validated. Modified designs were modeled based on design parameter variations. Characterization of these designs was done and their performance was recorded. Plate simulation results confirm direct relationship between design parameters and beam steering. A set of guidelines for future designs was also proposed. Two designs developed based on the set guidelines were sent to our collaborator Genziko Inc. for fabrication.
Daniel Georgiev (Advisor)
81 p.
Aerospace Materials; Electrical Engineering; Engineering
FSAT; SHM; NDT; Frequency Steerable Acoustic Transducers;

Recommended Citations

Citations

  • Repale, R. (2014). Characterization and Design of Spiral Frequency Steerable Acoustic Transducers [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1387416019

    APA Style (7th edition)

  • Repale, Rohan. Characterization and Design of Spiral Frequency Steerable Acoustic Transducers. 2014. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1387416019.

    MLA Style (8th edition)

  • Repale, Rohan. "Characterization and Design of Spiral Frequency Steerable Acoustic Transducers." Master's thesis, University of Toledo, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1387416019

    Chicago Manual of Style (17th edition)

toledo1387416019
499
© 2014, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.