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Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method

1
Department of Physics, Goethe University Frankfurt, D-60438 Frankfurt am Main, Germany
2
Fraunhofer Institut LBF, 64289 Darmstadt, Germany
3
Becker Marine Systems GmbH, 21079 Hamburg, Germany
4
Institut für Verbundwerkstoffe GmbH, 67663 Kaiserslautern, Germany
5
CCOR—Schäfer MWN GmbH, 71272 Renningen, Germany
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(13), 3732; https://doi.org/10.3390/s20133732
Received: 27 May 2020 / Revised: 10 June 2020 / Accepted: 30 June 2020 / Published: 3 July 2020
(This article belongs to the Special Issue Smart Sensors for Damage Detection)
This paper presents a proof of concept for simultaneous load and structural health monitoring of a hybrid carbon fiber rudder stock sample consisting of carbon fiber composite and metallic parts in order to demonstrate smart sensors in the context of maritime systems. Therefore, a strain gauge is used to assess bending loads during quasi-static laboratory testing. In addition, six piezoelectric transducers are placed around the circumference of the tubular structure for damage detection based on the electro-mechanical impedance (EMI) method. A damage indicator has been defined that exploits the real and imaginary parts of the admittance for the detection of pin failure in the rudder stock. In particular, higher frequencies in the EMI spectrum contain valuable information about damage. Finally, the information about damage and load are merged in a cluster analysis enabling damage detection under load. View Full-Text
Keywords: structural health monitoring; damage detection; composites; electro-mechanical impedance; smart sensor systems structural health monitoring; damage detection; composites; electro-mechanical impedance; smart sensor systems
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MDPI and ACS Style

Moll, J.; Schmidt, M.; Käsgen, J.; Mehldau, J.; Bücker, M.; Haupt, F. Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method. Sensors 2020, 20, 3732. https://doi.org/10.3390/s20133732

AMA Style

Moll J, Schmidt M, Käsgen J, Mehldau J, Bücker M, Haupt F. Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method. Sensors. 2020; 20(13):3732. https://doi.org/10.3390/s20133732

Chicago/Turabian Style

Moll, Jochen; Schmidt, Matthias; Käsgen, Johannes; Mehldau, Jörg; Bücker, Marcel; Haupt, Felix. 2020. "Detection of Pin Failure in Carbon Fiber Composites Using the Electro-Mechanical Impedance Method" Sensors 20, no. 13: 3732. https://doi.org/10.3390/s20133732

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