TY - GEN
T1 - Low-cost electromechanical impedance testing for civil structures
AU - Lederman, Addie
AU - Wang, Shuo
AU - Gomez, Fernando
AU - Spencer, Billie F.
N1 - Funding Information:
The research described herein was sponsored by the US Army Corps of Engineers Navigation Systems Research Program. Opinions, interpretations, conclusions, and recommendations are those of the authors and are not necessarily endorsed by the US Army. The authors would like to acknowledge the support from USACE St. Louis, Huntington, and Portland districts, which proved invaluable to the success of this study. Finally, the authors from the University of Illinois would like to thank USACE for access to the SMART Gate database, as well as their extensive library of relevant literature.
PY - 2019
Y1 - 2019
N2 - Electromechanical (E/M) impedance testing using piezoceramic (PZT) patches adhered to the surface of a host structure has been shown to be a promising structural health monitoring (SHM) technique. E/M impedance testing can detect incipient and local damage in engineering structures by taking advantage of the coupling between the electrical impedance of the PZT patch and the mechanical impedance of the host structure. Research in this field so far has largely been laboratory based in ideal environmental conditions. Moreover, an impedance analyzer is typically used to make measurements; typically, these analyzers are expensive and not portable, and thus do not lend themselves to field applications. This paper explores an expansion in the application of E/M impedance testing that aims to close the critical gap between laboratory development of this SHM method and its deployment in the field. To reduce the cost associated with this technique, a single-board computer (SBC) is used to make measurements. The SBC used, called Red Pitaya (RP), does not require further hardware development, can make high fidelity impedance measurements, and can wirelessly communicate with a PC. Additionally, the scope of most research conducted to date has been on structures in a laboratory setting or simple outdoor exposure. Work has not been done yet on extreme environments, such as under water. To expand the range of environments in which the E/M impedance technique is employed, damage detection tests are conducted on one-dimensional beams submerged under water.
AB - Electromechanical (E/M) impedance testing using piezoceramic (PZT) patches adhered to the surface of a host structure has been shown to be a promising structural health monitoring (SHM) technique. E/M impedance testing can detect incipient and local damage in engineering structures by taking advantage of the coupling between the electrical impedance of the PZT patch and the mechanical impedance of the host structure. Research in this field so far has largely been laboratory based in ideal environmental conditions. Moreover, an impedance analyzer is typically used to make measurements; typically, these analyzers are expensive and not portable, and thus do not lend themselves to field applications. This paper explores an expansion in the application of E/M impedance testing that aims to close the critical gap between laboratory development of this SHM method and its deployment in the field. To reduce the cost associated with this technique, a single-board computer (SBC) is used to make measurements. The SBC used, called Red Pitaya (RP), does not require further hardware development, can make high fidelity impedance measurements, and can wirelessly communicate with a PC. Additionally, the scope of most research conducted to date has been on structures in a laboratory setting or simple outdoor exposure. Work has not been done yet on extreme environments, such as under water. To expand the range of environments in which the E/M impedance technique is employed, damage detection tests are conducted on one-dimensional beams submerged under water.
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M3 - Conference contribution
AN - SCOPUS:85091440390
T3 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - Conference Proceedings
SP - 448
EP - 453
BT - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure
A2 - Chen, Genda
A2 - Alampalli, Sreenivas
PB - International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII
T2 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019
Y2 - 4 August 2019 through 7 August 2019
ER -