Influence of the lamination process on the plastic optical fiber sensors embedded in composite materials

Lesiak, Piotr; Szeląg, M.; Awietjan, Stefan; Kuczkowski, Michał; Ertman, Sławomir; Budaszewski, Daniel; Domański, Andrzej W.; Woliński, Tomasz R.

doi:10.1117/12.2017364

Cited by 3 publications

(4 citation statements)

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“…In the case when the reinforcing fibers create a two-dimensional structure, the displacement vectors are asymmetric and directed mainly to the surface of the structure. As a result, the optical fiber embedded in the space between the two layers undergoes compression [47].…”

Section: Polarimetric Sensorsmentioning

confidence: 99%

Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures

et al. 2020

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‘Smart’ structural health monitoring of composite materials with optical fiber sensors is becoming more and more important, especially in the aviation industry. This paper presents an overview of hybrid fiber-optic sensing systems based on scattering techniques, fiber Bragg gratings, interferometric techniques, and polarimetric methods in structural health monitoring. The main purpose of this manuscript is to analyze the possibilities of using hybrid sensors based on fiber optics to monitor composite structures, with a particular emphasis on aircraft structures. Since it is difficult to indicate the most comprehensive approach due to different parameters of the described sensors, the review contains a detailed description of available solutions. We hope that this work will allow for a better and faster selection of the right solution for the problem at hand.

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Section: Polarimetric Sensorsmentioning

confidence: 99%

Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures

et al. 2020

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“…However, as the fibers of the reinforcement form a twodimensional structure, the displacement vectors are asymmetric -mainly directed to the structure surface. An optical fiber disposed in the space between the two layers is then compressed [4].…”

Section: Introductionmentioning

confidence: 99%

“…With the growing use of high-performance composite materials in critical structures, it has become increasingly important for 'smart' systems to monitor structural health of these materials. Polarimetric sensors based on HB fibers [1][2][3][4] embedded into the structure of carbon-fiber epoxy composites offer the capability to monitor the structure during the manufacturing process, curing, general aging, as well potential damages. Unfortunately, the matrix material undergoes a volumetric change (known as polymerization shrinkage) during the polymerization process while the fiber remains volumetrically stable at the curing temperature.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Stress Distribution in Embedded Polymer and Silica-Glass Highly Birefringent Fibers

Lesiak

Szostkiewicz

Woliński

2016

J. Lightwave Technol.

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The paper presents a numerical analysis of influence of polymerization shrinkage on selected polymer and silica-based highly birefringent (HB) optical fibers embedded in a composite material. Since polymerization is a chemical process consisting in combining many molecules into a macromolecular compound, the direction of polymerization shrinkage depends on the number of constituent composite surfaces. A detailed analysis of the piezo-optic effects occurring in HB fibers before and after the lamination process is presented. An answer to the question to what extent we are able to properly diagnose a degree of degradation of the material is also provided.Index Terms-Composite material, coupling mode method, finite element method, optical fiber sensor, stress.

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“…These deformations of the structure were different along both the x and y axes, since there is such a visible change in fiber geometry. Comparing the sensitivity to the temperature of microstructured polymer optical fibers (mPOF) before and after the lamination process [17], it should be noted that polymer optical fibers increased their thermal sensitivity in a significant way. The reason for this is the polymerization shrinkage, which in an uncontrolled way changes the birefringence of the mPOF laminate in polymer composites with a two-dimensional structure created by the reinforcing fibers.…”

Section: Introductionmentioning

confidence: 99%

Polymer Fibers Covered by Soft Multilayered Films for Sensing Applications in Composite Materials

Nikoniuk

Bednarska

Sienkiewicz

et al. 2019

Sensors

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This paper presents the possibility of applying a soft polymer coating by means of a layer-by-layer (LbL) technique to highly birefringent polymer optical fibers designed for laminating in composite materials. In contrast to optical fibers made of pure silica glass, polymer optical fibers are manufactured without a soft polymer coating. In typical sensor applications, the absence of a buffer coating is an advantage. However, highly birefringent polymer optical fibers laminated in a composite material are much more sensitive to temperature changes than polymer optical fibers in a free space as a result of the thermal expansion of the composite material. To prevent this, we have covered highly birefringent polymer optical fibers with a soft polymer coating of different thickness and measured the temperature sensitivity of each solution. The results obtained show that the undesired temperature sensitivity of the laminated optical fiber decreases as the thickness of the coating layer increases.

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Influence of the lamination process on the plastic optical fiber sensors embedded in composite materials

Cited by 3 publications

References 0 publications

Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures

Hybrid Fiber Optic Sensor Systems in Structural Health Monitoring in Aircraft Structures

Numerical Analysis of Stress Distribution in Embedded Polymer and Silica-Glass Highly Birefringent Fibers

Polymer Fibers Covered by Soft Multilayered Films for Sensing Applications in Composite Materials

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