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Series-connected Interdigitated Surface Acoustic Wave Sensors for Structural Health Monitoring

Goutham R.Kirikera1,2, Sridhar Krishnaswamy2,3

1 Pressent address: Geophysical Research Company LLC. Tulsa, OK 74115
2 Center for Quality Engineering and Failure Prevention, Northwestern University, Evanston, IL, 60208
3 Contact author:

Structural Longevity 2009, 2(1), 11-24.


Active health monitoring using narrowband Raleigh-wave or modeselective Lamb-wave actuation and reception involves the use of a pair of matched multi-element transducer arrays. The spacing of the elements of the transducer arrays dictates the Lamb mode wavelength, and by appropriate choice of drive frequency, a specific mode can be selected. Typically, the elements of the transducer array are all connected in a parallel configuration and are used for both excitation and reception. It is shown in this paper that for reception a series connected transducer array results in better performance. Connecting multiple electrodes in a series configuration allows the summing of individual voltages generated by each piezoelectric transducer and it is shown that this results in better sensor performance.


Cite This Article

R.Kirikera, G., Krishnaswamy, S. (2009). Series-connected Interdigitated Surface Acoustic Wave Sensors for Structural Health Monitoring. Structural Longevity, 2(1), 11–24.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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