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Optimized Electromechanical Impedance Spectroscopy Using Minimal Number of Test Frequencies
Electromechanical impedance (EMI) spectroscopy is a widely used methodology in structural health monitoring (SHM) to differentiate pristine from damaged structural conditions. In this work, a novel signal processing approach is presented based on distance-based clustering and semi-supervised tree classifiers. The main result of this contribution is a strongly reduction in the number of test frequencies supporting damage classification.
The experimental proof of principle is conducted on an aluminum plate with drilled holes of increasing size. The measurements are recorded with the commercially available handheld device AD5933 that covers a frequency range from 1 to 100 kHz. The evaluation of the conductance data to separate pristine and damaged states is performed using only two test frequencies. Implementing this contribution might result in a lower energy consumption and a longer battery lifetime in many practical applications where EMI spectroscopy measurements are used.
Optimized Electromechanical Impedance Spectroscopy Using Minimal Number of Test Frequencies
Electromechanical impedance (EMI) spectroscopy is a widely used methodology in structural health monitoring (SHM) to differentiate pristine from damaged structural conditions. In this work, a novel signal processing approach is presented based on distance-based clustering and semi-supervised tree classifiers. The main result of this contribution is a strongly reduction in the number of test frequencies supporting damage classification.
The experimental proof of principle is conducted on an aluminum plate with drilled holes of increasing size. The measurements are recorded with the commercially available handheld device AD5933 that covers a frequency range from 1 to 100 kHz. The evaluation of the conductance data to separate pristine and damaged states is performed using only two test frequencies. Implementing this contribution might result in a lower energy consumption and a longer battery lifetime in many practical applications where EMI spectroscopy measurements are used.
Optimized Electromechanical Impedance Spectroscopy Using Minimal Number of Test Frequencies
Lecture Notes in Civil Engineering
Rizzo, Piervincenzo (editor) / Milazzo, Alberto (editor) / Slanina, Teresa (author) / Moll, Jochen (author) / Kexel, Christian (author) / Barker, John H. (author)
European Workshop on Structural Health Monitoring ; 2022 ; Palermo, Italy
2022-06-22
9 pages
Article/Chapter (Book)
Electronic Resource
English
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