Experimental investigations in embedded sensing of composite components in aerospace vehicles

Ghoshal, Anindya; Ayers, James; Gurvich, Mark R.; Urban, Michael; Bordick, Nathaniel

doi:10.1016/j.compositesb.2014.10.050

Cited by 46 publications

(22 citation statements)

References 31 publications

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“…When the fibre is embedded between internal plies, this solution is also difficult to implement. Embedded connectors [ 93 , 94 , 95 ] are specially designed devices to overcome this problem; only the female part of the connector is embedded so that proper machining of the composite element surface is still possible (see Figure 8 b). These connectors are often miniaturised [ 94 ] to be less invasive.…”

Section: Sensor Deployment and Performance In Composite Structuresmentioning

confidence: 99%

“…These connectors are often miniaturised [ 94 ] to be less invasive. However one potential source of decreased reliability is the deformation that the embedded connector might experience during the manufacturing process which may affect the alignment [ 95 ]. In addition, the use of embedded or partially embedded connectors requires a careful assessment of the potential reduction in the strength of the composite.…”

Section: Sensor Deployment and Performance In Composite Structuresmentioning

confidence: 99%

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Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Sante

2015

Sensors

537

263

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In-service structural health monitoring of composite aircraft structures plays a key role in the assessment of their performance and integrity. In recent years, Fibre Optic Sensors (FOS) have proved to be a potentially excellent technique for real-time in-situ monitoring of these structures due to their numerous advantages, such as immunity to electromagnetic interference, small size, light weight, durability, and high bandwidth, which allows a great number of sensors to operate in the same system, and the possibility to be integrated within the material. However, more effort is still needed to bring the technology to a fully mature readiness level. In this paper, recent research and applications in structural health monitoring of composite aircraft structures using FOS have been critically reviewed, considering both the multi-point and distributed sensing techniques.

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Section: Sensor Deployment and Performance In Composite Structuresmentioning

confidence: 99%

Section: Sensor Deployment and Performance In Composite Structuresmentioning

confidence: 99%

Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Sante

2015

Sensors

537

263

View full text Add to dashboard Cite

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“…e technology based on FOS with Bragg gratings has shown great potential for solving monitoring problems in various industries. For instance, they have been widely used in aircraft structures [30][31][32][33][34]. Besides, fiber optic sensors on Bragg gratings were also employed to monitor the state of wind generators [35,36], the performance of geotechnical objects [37,38], different civilian structures such as high-rise buildings, bridges, and tunnels.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of the Effect of Microscale Components Interaction on Measurements of Fiber Optic Strain Sensors Used in Composite Structures

Tashkinov

Шардаков

2019

Advances in Materials Science and Engineering

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The paper investigates the influence of structural components of a composite material on the strain values measured by using an embedded optical fiber with Bragg gratings. The effect of composite plies and intermediate epoxy layers on the transfer of deformations from the measured object to the optical fiber was studied taking into account various methods of the fiber attachment and surrounding media configurations. A numerical estimation of the effect of the longitudinal and transverse components of the strain tensor on the wavelength of the reflected spectrum is performed.

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“…Examples of their successful applications in various structures and industries are contained in the Refs. [1][2][3][4][5][6]. For structural health monitoring one of the most demanded are products made of polymer composite materials (PCM).…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating

Kosheleva

Матвеенко

Serovaev

et al. 2019

Frattura Ed Integrità Strutturale

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One of the issues in the strain measurement with the help of fiber-optic sensors based on Bragg gratings is the calculation of the strain based on the information from the sensor and its correspondence to the material strain. Relationships between the data measured by the sensor and the strain in the Bragg grating have a unique solution under the condition of uniaxial stress state of the fiber, which are not fulfilled when the fiber is embedded in the material. The paper presents the results of numerical simulations with an example of a model problem for a polymer composite material with an embedded optical fiber, which can be surrounded by a resin pocket. The presented results allow to estimate the error of the strain values calculated on the basis of uniaxial stress state assumption of the optical fiber. Based on numerical calculations, parameters of a capillary on an optical fiber in the Bragg grating zone are estimated, ensuring uniaxial stress state of the fiber in the Bragg grating zone. To ensure these conditions, the cross section of the capillary in an isotropic material is a circle, and in an anisotropic material, good results can be obtained with an elliptical cross section.

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Experimental investigations in embedded sensing of composite components in aerospace vehicles

Cited by 46 publications

References 31 publications

Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Fibre Optic Sensors for Structural Health Monitoring of Aircraft Composite Structures: Recent Advances and Applications

Numerical Analysis of the Effect of Microscale Components Interaction on Measurements of Fiber Optic Strain Sensors Used in Composite Structures

Numerical analysis of the strain values obtained by FBG embedded in a composite material using assumptions about uniaxial stress state of the optical fiber and capillary on the Bragg grating

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