Polymer optical fiber sensors in human life safety

Marques, Carlos; Webb, David J.; Andre, P.

doi:10.1016/j.yofte.2017.03.010

Cited by 101 publications

(47 citation statements)

References 72 publications

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“…Although optical fiber sensors are commonly made of silica fibers, advances in polymer processing [2], characterization [3] and fiber Bragg grating (FBG) inscription [4] enable the application of polymer optical fibers (POFs) in sensing applications. POFs present additional advantages when compared with their silica counterparts, which include flexibility in bending, higher fracture toughness, and lower Young Modulus that provides higher sensitivity in strain sensing applications [5]. In addition, the biocompatibility and non-brittle nature of POFs means that they are clinically acceptable and can be employed in in-vivo applications [6].…”

Section: Introductionmentioning

confidence: 99%

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Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

et al. 2018

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Section: Introductionmentioning

confidence: 99%

“…Of all POF materials, polymethyl methacrylate (PMMA) is yet the most employed material in POF production [5]. However, PMMA has a low glass transition temperature (T g ) compared to some of the other polymer materials for fiber fabrication, such as polycarbonate (PC), which can limit its application at higher temperatures [8].…”

Section: Introductionmentioning

confidence: 99%

Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

et al. 2018

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“…Some practical considerations on the application of POFs for monitoring strain in synthetic fibre ropes for MRE applications must also be discussed. PMMA has a tendency to absorb water, which will cause the fibre to swell and affect strain measurement [9,29,36]. A protective coating will therefore be required in any sub-sea measurement system to create a barrier between the water and the PMMA material.…”

Section: Discussionmentioning

confidence: 99%

Investigating Polymer Fibre Optics for Condition Monitoring of Synthetic Mooring Lines

Gordelier

Thies

Rinaldi

et al. 2020

JMSE

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Synthetic mooring lines are becoming a popular alternative to conventional chain mooring systems. For marine renewable energy devices, they have been considered as an enabling technology for this nascent sector, given their reduced costs and ease of deployment. However, the extreme operating environment has led to an increased interest in the 'in-situ' condition monitoring of these mooring lines. This paper considers the use of polymer fibre optic technology and the optical time domain reflectometry (OTDR) technique for the condition monitoring of synthetic mooring lines. To establish the operating envelope of the fibres, Polymethylmethacrylate (PMMA) polymer optical fibres are mechanically tested. Additionally, an OTDR is used to monitor fibres whilst under elongation using a tensile test machine, and the sensitivity of the system in monitoring strain is established. At the lowest strain rate, the average proportional limit and yield points of the fibres are found at 1.16% strain and 5.41% strain, respectively. Fatigue exposure of fibres up to 1.25% strain identifies no measurable effect on fibres' proportional limit or yield point. The occurrence of significant creep is identified for fibres strained beyond 1.5%. The OTDR system is able to identify strains at and above 4%. The study identifies important criteria that should be considered in the integration of polymer optical fibres for mooring applications. Limitations are discussed and suggestions for progressing this technology are provided.

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“…Although there is considerable research towards obtaining POFs with different materials, such as Zeonex [14], TOPAS [15] and polycarbonate (PC) [16], to date, polymethyl methacrylate (PMMA) is the most employed material for POF manufacturing [17]. There are some reports of polymer optical fiber Bragg gratings (POFBGs) in multimode POFs [18]- [20].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Cladding Structure in PMMA mPOFs Mechanical Properties for Strain Sensors Applications

et al. 2018

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Abstract-This paper presents a dynamic mechanical analysis (DMA) of a microstructured polymer optical fiber (mPOF). The fiber material is polymethyl methacrylate (PMMA), which is widely available commercially. The DMA is made by means of sequential strain cycles produced with an oscillatory load with controlled frequency to obtain the variation of the Young's Modulus with respect to temperature, frequency and humidity for mPOFs with 2, 3 and 5-ring hexagonal microstructured cladding. Results show that the 3 different cladding structures have similar Young's modulus on the stress-strain tests performed. Furthermore, the 3-ring structure presents the lowest Young's Modulus variation with temperature among the samples tested, whereas the 5-ring structure presents a Young's Modulus variation with frequency 25% lower than the 2 and 3-rings cladding structures. Regarding the humidity sensitivity, the 2-ring structure presented a 30% lower Young's Modulus variation for a 25% humidity increase. The results obtained provide guidelines for the cladding structure choice for strain or stress sensors applications when low cross-sensitivity with temperature, humidity and frequency is desired.Index Terms-microstrutured polymer optical fiber, dynamic mechanical analysis, polymethyl methacrylate.

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Polymer optical fiber sensors in human life safety

Cited by 101 publications

References 72 publications

Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

Investigating Polymer Fibre Optics for Condition Monitoring of Synthetic Mooring Lines

Influence of the Cladding Structure in PMMA mPOFs Mechanical Properties for Strain Sensors Applications

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