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

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 4052 ◽  
Author(s):  
Dorian Nikoniuk ◽  
Karolina Bednarska ◽  
Maksymilian Sienkiewicz ◽  
Grzegorz Krzesiński ◽  
Mateusz Olszyna ◽  
...  
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Optical Fibers ◽  
Temperature Sensitivity ◽  
Polymer Coating ◽  
Layer By Layer ◽  
Sensor Applications ◽  
Sensing Applications ◽  
Polymer Optical Fibers ◽  
Soft Polymer

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.

scholarly journals Suspended-Core Microstructured Polymer Optical Fibers and Potential Applications in Sensing

Sensors ◽  
2019 ◽  
Vol 19 (16) ◽  
pp. 3449 ◽  
Author(s):  
Wanvisa Talataisong ◽  
Rand Ismaeel ◽  
Martynas Beresna ◽  
Gilberto Brambilla
Keyword(s):  
Optical Fibers ◽  
Material Selection ◽  
Biological Species ◽  
Single Step ◽  
3D Printer ◽  
Sensing Applications ◽  
Wide Range ◽  
Potential Applications ◽  
Pressure Chemical ◽  
Polymer Optical Fibers

The study of the fabrication, material selection, and properties of microstructured polymer optical fibers (MPOFs) has long attracted great interest. This ever-increasing interest is due to their wide range of applications, mainly in sensing, including temperature, pressure, chemical, and biological species. This manuscript reviews the manufacturing of MPOFs, including the most recent single-step process involving extrusion from a modified 3D printer. MPOFs sensing applications are then discussed, with a stress on the benefit of using polymers.

Functionalized Flexible Soft Polymer Optical Fibers for Laser Photomedicine

2017 ◽  
Vol 6 (3) ◽  
pp. 1701118 ◽  
Author(s):  
Nan Jiang ◽  
Rajib Ahmed ◽  
Ahmmed A. Rifat ◽  
Jingjing Guo ◽  
Yixia Yin ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Polymer Optical Fibers ◽  
Soft Polymer

Layer-by-layer assembly of Cu3(BTC)2 on chitosan non-woven fabrics: a promising haemostatic decontaminant composite material against sulfur mustard

2017 ◽  
Vol 5 (30) ◽  
pp. 6138-6146 ◽  
Author(s):  
Lijuan Zhang ◽  
Junmei Sun ◽  
Yunshan Zhou ◽  
Yuxu Zhong ◽  
Ying Ying ◽  
...  
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Sulfur Mustard ◽  
Woven Fabrics ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
Layer Assembly

Anchoring Cu3(BTC)2 on the surface of chitosan non-woven fabrics results in formation of a new haemostatic decontaminant composite materials.

scholarly journals The usage of optical fibers for damage detection in ballistic protection composite laminates

2006 ◽  
Vol 60 (1-2) ◽  
pp. 39-44
Author(s):  
Irena Zivkovic ◽  
Aleksandar Kojovic ◽  
Milos Tomic ◽  
Ljiljana Brajovic ◽  
Radoslav Aleksic
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Optical Fibers ◽  
Signal Intensity ◽  
Light Signal ◽  
Thermoplastic Composite ◽  
Damage Resistance ◽  
Applied Loading ◽  
Reinforced Composite ◽  
Photo Detectors

This paper describes the procedure of embedding fiber optic sensors in laminar thermoplastic composite material, as well as damage investigation after ballistic loading. Thermoplastic-reinforced composite materials were made for increased material damage resistance during ballistic loading. Damage inside the composite material was detected by observing the intensity drop of the light signal transmitted through the optical fibers. Experimental testing was carried out in order to observe and analyze the response of the material under various load conditions. Different types of Kevlar reinforced composite materials (thermoplastic, thermo reactive and thermoplastic with ceramic plate as the impact face) were made. Material damage resistance during ballistic loading was investigated and compared. Specimens were tested under multiple load conditions. The opto-electronic part of the measurement system consists of two light-emitting diodes as light sources for the optical fibers, and two photo detectors for the light intensity measurement. The output signal was acquired from photo detectors by means of a data acquisition board and personal computer. The measurements showed an intensity drop of the transmitted light signal as a result of the applied loading on composite structure for all the optical fibers. All the diagrams show similar behavior of the light signal intensity. In fact, all of them may be divided into three zones: the zone of penetration of the first composite layer, the bullet traveling zone through the composite material till its final stop, and the material relaxation zone. The attenuation of the light signal intensity during impact is caused by the influence of the applied dynamic stress on the embedded optical fibers. The applied stress caused micro bending of the optical fiber, changes in the shape of the cross-section and the unequal changes of the indices of refraction of the core and cladding due to the stress-optic effect. The main goal of the experiment was to develop a system for thermoplastic composite structure health monitoring during real life exploitation. The results of the experiments confirmed that optical fibers could be applied as intensity sensors in the real-time monitoring of structural changes in thermoplastic laminar composite materials under ballistic loading. The light signal intensity drops in an optical fiber in response to the applied loading on the composite material.

Dynamic mechanical analysis on fused polymer optical fibers: towards sensor applications

2018 ◽  
Vol 43 (8) ◽  
pp. 1754 ◽  
Author(s):  
Arnaldo Leal-Junior ◽  
Anselmo Frizera ◽  
Maria José Pontes ◽  
Paulo Antunes ◽  
Nélia Alberto ◽  
...  
Keyword(s):  
Dynamic Mechanical Analysis ◽  
Optical Fibers ◽  
Mechanical Analysis ◽  
Dynamic Mechanical ◽  
Sensor Applications ◽  
Polymer Optical Fibers

scholarly journals Optimization of novel melt-extruded polymer optical fibers designed for pressure sensor applications

2017 ◽  
Vol 88 ◽  
pp. 44-55 ◽  
Author(s):  
Brit M. Quandt ◽  
Rudolf Hufenus ◽  
Bernhard Weisse ◽  
Fabian Braun ◽  
Martin Wolf ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Pressure Sensor ◽  
Sensor Applications ◽  
Polymer Optical Fibers

scholarly journals Molecular alignment relaxation in polymer optical fibers for sensing applications

2016 ◽  
Vol 28 ◽  
pp. 11-17 ◽  
Author(s):  
Pavol Stajanca ◽  
Onur Cetinkaya ◽  
Marcus Schukar ◽  
Pawel Mergo ◽  
David J. Webb ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Molecular Alignment ◽  
Sensing Applications ◽  
Polymer Optical Fibers
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