A modally-selective, variable-length anisotropic piezocomposite transducer is designed for guided wave (GW) structural health monitoring applications. The transducer dimensions needed to maximize individual modes are selected based on 3-D elasticity models for GW excitation by finite dimensional transducers. This theory is used to determine these transducer dimensions as a function of the wave phase velocity, and normalized by the substrate thickness. The design and fabrication of the transducer are subsequently described, and a set of experimental tests is conducted in pristine isotropic structures to characterize the actuation and sensing performance of the device. It is shown that the transducer dimensions can be tailored to obtain specific symmetric to antisymmetric mode transmission ratios.
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ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
October 28–30, 2008
Ellicott City, Maryland, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4332-1
PROCEEDINGS PAPER
Design of Variable-Length Piezocomposite Transducer for Structural Health Monitoring
Ken I. Salas,
Ken I. Salas
University of Michigan, Ann Arbor, MI
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Carlos E. S. Cesnik
Carlos E. S. Cesnik
University of Michigan, Ann Arbor, MI
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Ken I. Salas
University of Michigan, Ann Arbor, MI
Carlos E. S. Cesnik
University of Michigan, Ann Arbor, MI
Paper No:
SMASIS2008-385, pp. 47-56; 10 pages
Published Online:
July 13, 2009
Citation
Salas, KI, & Cesnik, CES. "Design of Variable-Length Piezocomposite Transducer for Structural Health Monitoring." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 47-56. ASME. https://doi.org/10.1115/SMASIS2008-385
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