Damage detection in composite aircraft wing-like test-box using distributed fiber optic sensors

Datta, Amitabha; Augustin, M. J.; Gaddikeri, Kotresh M.; Viswamurthy, Sathyamangalam Ramanarayanan; Gupta, Neha; Sundaram, Ramesh

doi:10.1016/j.yofte.2021.102651

Cited by 18 publications

(4 citation statements)

References 34 publications

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“…But at the same time, they have less accurate weighing, are too sensitive to temperature changes, and usually has short lifespan [6]. Fiber optic sensors are widely used in various fields, such as health [8], engineering [9][10][11], civil works [12], and chemistry [13]. In civil and engineering fields, fiber optic sensors are widely used for load sensing and structural health monitoring [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Macrobending loss in fiber optic wrapped on rubber-spring wire structure under static load-pressure

Pratomo,

Sulistyo,

Hanto

et al. 2023

J. Phys.: Conf. Ser.

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This work observes rubber-based frame structures for wide helix-shaped-macrobending fiber optic sensors intended for measuring an object with high load levels. In this fiber sensor, the working principle is to measure the power loss (due to bending) of the light traveled in the employed fiber optic. During the applications, it needs a particular mechanical structure to accommodate a reversible fiber bending in the context of load measurement. In this work, a cylindrical-shaped rubber structure mixed with calcium carbonate compound (CaCO3) is constructed as the fiber bending frame (housing) in which a spring wire is inserted into the structure in the two models, i.e., outer and inner-spring structure. Several investigations of static load pressure reveal the optimum structure design for high load measurement. Using the inner-spring model, a rubber structure with 10wt% CaCO3 exhibits the preferable performance with a sensitivity of 0.15 V/Kg.cm2 and measurement load range until 210 Kg.

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Section: Introductionmentioning

confidence: 99%

Macrobending loss in fiber optic wrapped on rubber-spring wire structure under static load-pressure

Pratomo,

Sulistyo,

Hanto

et al. 2023

J. Phys.: Conf. Ser.

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“…Among the available SHM technologies, valuable for the above-mentioned applications, the use of distributed fiber optics sensing [ 14 ], or of multiplexed Fiber Bragg Gratings, or FBG [ 15 ], appears quite attractive. At the current status of the technology, if airborne applications are explored the secondary ones are preferred since these may count on interrogators that can be embarked without being affected by the harsh environment of the flight, or, in turn, giving effect to the on-board electronics.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Results of a Real-Time SHM Integrated System on a P180 Full-Scale Wing-Box Section

Ciminello

Sikorski

Galasso

et al. 2023

Sensors

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The final objective of the study herein reported is the preliminary evaluation of the capability of an original, real-time SHM system applied to a full-scale wing-box section as a significant aircraft component, during an experimental campaign carried out at the Piaggio Lab in Villanova D’Albenga, Italy. In previous works, the authors have shown that such a system could be applied to composite beams, to reveal damage along the bonding line between a longitudinal stiffening element and the cap. Utilizing a suitable scaling process, such work has then been exported to more complex components, in order to confirm the outcomes that were already achieved, and, possibly, expanding the considerations that should drive the project towards an actual implementation of the proposed architecture. Relevant topics dealt with in this publication concern the application of the structural health monitoring system to different temperature ranges, by taking advantage of a climatic room operating at the Piaggio sites, and the contemporary use of several algorithms for real-time elaborations. Besides the real-time characteristics already introduced and discussed previously, such further steps are essential for applying the proposed architecture on board an aircraft, and to increase reliability aspects by accessing the possibility of comparing different information derived from different sources. The activities herein reported have been carried out within the Italian segment of the RESUME project, a joint co-operation between the Ministry of Defense of Israel and the Ministry of Defense of Italy.

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“…[3] The U.S. military standard, MIL-87145 regulations require, in order to protect aircraft from any damage caused by high temperature gas, that an efficient air leakage detection system is fitted. [4][5][6][7] When catheters under high temperatures are present in the engine compartment, hanger, wing, wheel wall and environmental control system equipment compartment, etc., they should be monitored by ensuring that there is sufficient air leakage detection. Wire insulation, commonly used in aircraft equipment compartments, is often the least temperature-resistant material, and in the sections where they exist, 176 • C is generally the allowable upper limit temperature.…”

Section: Introductionmentioning

confidence: 99%

Optical fiber FBG linear sensing systems for the on-line monitoring of airborne high temperature air duct leakage

Wang¹,

Tong²,

Zhang³

et al. 2022

Chinese Phys. B

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Electrical Sensing System, such as those involving eutectic salt, are mostly used in connection to leakage from existing airborne high-temperature air-conducting pipelines. Such complex structured systems are susceptible to external interferences and, thus, cannot meet the increasingly strict monitoring needs of a complex air-conducting pipeline system of an aircraft. In view of this, this paper studies an alternative sensor system based on a dense array fiber grating. To obtain a compact and light-weight airborne signal processing system, a field programmable gate array is used as the main control core that controls the output of the light source. The functions of pulse modulation, analog-to-digital conversion, data buffering and transmission are integrated into a single system, while linear sensing monitoring is obtained by detecting the time-division and wavelength-division wavelength drift signals of the fiber Bragg grating array. Our experiments show that the spatial resolution of the linear sensing system approaches 5 cm, the temperature measurement accuracy reaches 2 ℃, the temperature measurement range is between 0-250 ℃, and the response time is within 4 s. Compared with the existing electrical monitoring system, various monitoring indicators have been greatly improved and have broad application prospects.

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Damage detection in composite aircraft wing-like test-box using distributed fiber optic sensors

Cited by 18 publications

References 34 publications

Macrobending loss in fiber optic wrapped on rubber-spring wire structure under static load-pressure

Macrobending loss in fiber optic wrapped on rubber-spring wire structure under static load-pressure

Laboratory Results of a Real-Time SHM Integrated System on a P180 Full-Scale Wing-Box Section

Optical fiber FBG linear sensing systems for the on-line monitoring of airborne high temperature air duct leakage

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