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Article

Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors

by
Agostino Iadicicco
1,*,
Daniele Natale
2,
Pasquale Di Palma
1,
Francesco Spinaci
3,
Antonio Apicella
3 and
Stefania Campopiano
1
1
Department of Engineering, University of Naples “Parthenope”, Centro Direzionale Isola C4, 80143 Napoli, Italy
2
Infratel Italia S.p.A, 00187 Roma, Italy
3
Magnaghi Aeronautica SpA, via Galileo Ferraris, 76, 80142 Napoli, Italy
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(10), 2239; https://doi.org/10.3390/s19102239
Submission received: 11 April 2019 / Revised: 12 May 2019 / Accepted: 12 May 2019 / Published: 15 May 2019
(This article belongs to the Special Issue Fiber Optic Sensors for Structural and Geotechnical Monitoring)
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Abstract

This work reports on the use of Fiber Bragg Grating (FBG) sensors integrated with innovative composite items of aircraft landing gear for strain/stress monitoring. Recently, the introduction of innovative structures in aeronautical applications is appealing with two main goals: (i) to decrease the weight and cost of current items; and (ii) to increase the mechanical resistance, if possible. However, the introduction of novel structures in the aeronautical field demands experimentation and certification regarding their mechanical resistance. In this work, we successfully investigate the possibility to use Fiber Bragg Grating sensors for the structural health monitoring of innovative composite items for the landing gear. Several FBG strain sensors have been integrated in different locations of the composite item including region with high bending radius. To optimize the localization of the FBG sensors, load condition was studied by Finite Element Method (FEM) numerical analysis. Several experimental tests have been done in range 0–70 kN by means of a hydraulic press. Obtained results are in very good agreement with the numerical ones and demonstrate the great potentialities of FBG sensor technology to be employed for remote and real-time load measurements on aircraft landing gears and to act as early warning systems.
Keywords: Fiber Bragg gratings; fiber optic sensors; aircraft landing gear; load monitoring system; composite device Fiber Bragg gratings; fiber optic sensors; aircraft landing gear; load monitoring system; composite device

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MDPI and ACS Style

Iadicicco, A.; Natale, D.; Di Palma, P.; Spinaci, F.; Apicella, A.; Campopiano, S. Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors. Sensors 2019, 19, 2239. https://doi.org/10.3390/s19102239

AMA Style

Iadicicco A, Natale D, Di Palma P, Spinaci F, Apicella A, Campopiano S. Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors. Sensors. 2019; 19(10):2239. https://doi.org/10.3390/s19102239

Chicago/Turabian Style

Iadicicco, Agostino, Daniele Natale, Pasquale Di Palma, Francesco Spinaci, Antonio Apicella, and Stefania Campopiano. 2019. "Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors" Sensors 19, no. 10: 2239. https://doi.org/10.3390/s19102239

APA Style

Iadicicco, A., Natale, D., Di Palma, P., Spinaci, F., Apicella, A., & Campopiano, S. (2019). Strain Monitoring of a Composite Drag Strut in Aircraft Landing Gear by Fiber Bragg Grating Sensors. Sensors, 19(10), 2239. https://doi.org/10.3390/s19102239

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