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Article

Magnetoelastic Ribbons as Vibration Sensors for Real-Time Health Monitoring of Rotating Metal Beams

Department of Chemical Engineering, University of Patras, 26504 Patras, Greece
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Author to whom correspondence should be addressed.
Academic Editor: Len Gelman
Sensors 2021, 21(23), 8122; https://doi.org/10.3390/s21238122
Received: 13 November 2021 / Revised: 1 December 2021 / Accepted: 3 December 2021 / Published: 4 December 2021
(This article belongs to the Special Issue Vibration Sensor-Based Diagnosis Technologies and Systems: Part Ⅰ )
In the current work, magnetoelastic material ribbons are used as vibration sensors to monitor, in real time and non-destructively, the mechanical health state of rotating beam blades. The magnetoelastic material has the form of a thin ribbon and is composed of Metglas alloy 2826 MB. The study was conducted in two stages. In the first stage, an experiment was performed to test the ability of the ribbon to detect and transmit the vibration behavior of four rotating blades, while the second stage was the same as the first but with minor damages introduced to the blades. As far as the first stage is concerned, the results show that the sensor can detect and transmit with great accuracy the vibratory behavior of the rotating blades, through which important information about the mechanical health state of the blade can be extracted. Specifically, the fast Fourier transform (FFT) spectrum of the recorded signal revealed five dominant peaks in the frequency range 0–3 kHz, corresponding to the first five bending modes of the blades. The identification process was accomplished using ANSYS modal analysis, and the comparison results showed deviation values of less than 1% between ANSYS and the experimental values. In the second stage, two types of damages were introduced to the rotating blades, an edge cut and a hole. The damages were scaled in number from one blade to another, with the first blade having only one side cut while the last blade had two side cuts and two holes. The results, as was expected, show a measurable shifting on the frequency values of the bending modes, thus proving the ability of the proposed magnetoelastic sensors to detect and transmit changes of the mechanical state of rotating blades in real time. View Full-Text
Keywords: Metglas ribbons; magnetoelastic materials; vibration sensors; rotating cantilever beams; bending modes Metglas ribbons; magnetoelastic materials; vibration sensors; rotating cantilever beams; bending modes
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MDPI and ACS Style

Samourgkanidis, G.; Kouzoudis, D. Magnetoelastic Ribbons as Vibration Sensors for Real-Time Health Monitoring of Rotating Metal Beams. Sensors 2021, 21, 8122. https://doi.org/10.3390/s21238122

AMA Style

Samourgkanidis G, Kouzoudis D. Magnetoelastic Ribbons as Vibration Sensors for Real-Time Health Monitoring of Rotating Metal Beams. Sensors. 2021; 21(23):8122. https://doi.org/10.3390/s21238122

Chicago/Turabian Style

Samourgkanidis, Georgios, and Dimitris Kouzoudis. 2021. "Magnetoelastic Ribbons as Vibration Sensors for Real-Time Health Monitoring of Rotating Metal Beams" Sensors 21, no. 23: 8122. https://doi.org/10.3390/s21238122

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