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Journal articles on the topic 'Fibre Bragg Grating sensors'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Broadway, Christian, Damien Kinet, Antreas Theodosiou, Kyriacos Kalli, Andrei Gusarov, Christophe Caucheteur, and Patrice Mégret. "CYTOP Fibre Bragg Grating Sensors for Harsh Radiation Environments." Sensors 19, no. 13 (June 27, 2019): 2853. http://dx.doi.org/10.3390/s19132853.

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We present a polymer fibre Bragg grating sensor and its sensitivity to gamma radiation by observing the reflected spectral profile. The Bragg grating is femtosecond inscribed within a perfluorinated CYTOP fibre and the alteration of the Bragg wavelength corresponds to the total radiation dose received. Over a total dose of 41 k Gy, the fibre demonstrates a sensitivity of − 26.2 p m / k Gy and a resolution of 40 Gy. Under active consideration for the instrumentation of nuclear waste repositories, this study gives a better understanding of the effects of gamma radiation upon Bragg gratings in CY

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Bartelt, Hartmut. "Fiber Bragg Grating Sensors and Sensor Arrays." Advances in Science and Technology 55 (September 2008): 138–44. http://dx.doi.org/10.4028/www.scientific.net/ast.55.138.

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Fiber Bragg gratings have found widespread application in sensor systems, e. g. for temperature, strain or refractive index measurements. The concept of fiber Bragg gratings allows also in a simple way the realisation of arrays of such sensors. The development of such optical fiber sensor systems often requires special fibers and grating structures which may go beyond more conventional Bragg grating structures in typical communication fibers. Concerning fibers there is, for example., a need of achieving fiber gratings in small diameter fibers and fiber tapers as well as in microstructured fibe

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3

Voet, Eli, Geert Luyckx, Ives De Baere, Joris Degrieck, J. Vlekken, E. Jacobs, and Hartmut Bartelt. "High Strain Monitoring during Fatigue Loading of Thermoplastic Composites Using Imbedded Draw Tower Fibre Bragg Grating Sensors." Advances in Science and Technology 56 (September 2008): 441–46. http://dx.doi.org/10.4028/www.scientific.net/ast.56.441.

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This paper presents the experimental study of fibre Bragg grating sensors for measuring strain inside composite laminates during fatigue loading. The optical fibres are imbedded inside thermoplastic CFRP test-coupons which have an ultimate strain of about 1.1%. Tension – tension fatigue cycling at a rate of 5Hz is been carried out at 314MPa with a maximum strain of 0.51%. At such extreme strain levels the use of high strength sensors becomes inevitable. Neither the sensor nor the composite test-coupons showed any significant degradation even after more than 500000 cycles. Fibre optic Bragg gra

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4

Tian, Zhenhua, Lingyu Yu, Xiaoyi Sun, and Bin Lin. "Damage localization with fiber Bragg grating Lamb wave sensing through adaptive phased array imaging." Structural Health Monitoring 18, no. 1 (February 19, 2018): 334–44. http://dx.doi.org/10.1177/1475921718755572.

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Fiber Bragg gratings are known being immune to electromagnetic interference and emerging as Lamb wave sensors for structural health monitoring of plate-like structures. However, their application for damage localization in large areas has been limited by their direction-dependent sensor factor. This article addresses such a challenge and presents a robust damage localization method for fiber Bragg grating Lamb wave sensing through the implementation of adaptive phased array algorithms. A compact linear fiber Bragg grating phased array is configured by uniformly distributing the fiber Bragg gra

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Thursby, G., B. Sorazu, D. Betz, M. Staszewski, and B. Culshaw. "The Use of Fibre Optic Sensors for Damage Detection and Location in Structural Materials." Applied Mechanics and Materials 1-2 (September 2004): 191–96. http://dx.doi.org/10.4028/www.scientific.net/amm.1-2.191.

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The measurement of changes in the properties of ultrasonic Lamb waves propagating through structural material has frequently been proposed as a method for the detection of damage. In this paper we describe work that uses optical fibre sensors to detect the Lamb waves and show that the directional properties of these sensors allow us to not only detect damage, but also to locate it. We look at two types of optical fibre sensor, a polarimetric sensor and the fibre Bragg grating. The polarimetric sensor measures the change in birefringence of a fibre caused by the pressure wave of the ultrasound

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Rao, Yun-Jiang. "In-fibre Bragg grating sensors." Measurement Science and Technology 8, no. 4 (April 1, 1997): 355–75. http://dx.doi.org/10.1088/0957-0233/8/4/002.

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7

Zhang, Naizhong, Claire Davis, Wing K. Chiu, Tommy Boilard, and Martin Bernier. "Fatigue Performance of Type I Fibre Bragg Grating Strain Sensors." Sensors 19, no. 16 (August 12, 2019): 3524. http://dx.doi.org/10.3390/s19163524.

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Although fibre Bragg gratings (FBGs) offer obvious potential for use in high-density, high-strain sensing applications, the adoption of this technology in the historically conservative aerospace industry has been slow. There are several contributing factors, one of which is variability in the reported performance of these sensors in harsh and fatigue prone environments. This paper reports on a comparative evaluation of the fatigue performance of FBG sensors written according to the same specifications using three different grating manufacturing processes: sensors written in stripped and re-coa

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8

Mrad, Nezih. "POTENTIAL OF BRAGG GRATING SENSORS FOR AIRCRAFT HEALTH MONITORING." Transactions of the Canadian Society for Mechanical Engineering 31, no. 1 (March 2007): 1–17. http://dx.doi.org/10.1139/tcsme-2007-0001.

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The increased requirement to operate military platforms and aerospace structures beyond their designed life imposes heavy maintenance and inspection burden on aircraft operators and owners. In-service structural health monitoring is potentially a cost-effective approach by which service usage information can be obtained and knowledgeable decisions can be made. Advanced sensor technology, such as optical fibres, are expected to provide existing and future aircraft with added intelligence and functionality, reduced weight and cost, enhanced robustness and performance. This paper furthers the und

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9

Canning, John. "Properties of Specialist Fibres and Bragg Gratings for Optical Fiber Sensors." Journal of Sensors 2009 (2009): 1–17. http://dx.doi.org/10.1155/2009/871580.

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The advent of optical fibres based on air holes running along their entirety opens up new directions in addressing various properties relevant to sensing, including the temperature/strain challenge of optical fibre sensors. This paper looks at the measurement challenges associated with temperature and strain, examines the potentially unique functionality structured fibre designs with and without gratings open up, and briefly describes some current research directions within conventional fibre and grating technologies.

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10

Nordmeyer, Ulrich, Niels Neumann, Xiaozhou Wang, Dirk Plettemeier, Torsten Thiel, and Konstantin Kojucharow. "Evaluation of optical fibre sensors in the electrical domain." Journal of Sensors and Sensor Systems 9, no. 2 (July 15, 2020): 199–208. http://dx.doi.org/10.5194/jsss-9-199-2020.

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Abstract. Optical fibre sensors cover a wide range of applications. They offer versatile advantages including resilience to electromagnetic interference, biocompatibility and chemical resistivity. Even in environments with restricted accessibility, integration difficulties can be overcome by using radio-over-fibre (RoF) technology that allows a wireless read-out. Conventionally, optical fibre sensors are evaluated in the optical domain by analysing the amplitude or spectrum of either the transmitted or the reflected light. A novel approach is to feed a radio frequency-modulated laser into the

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Wade, S. A., D. I. Forsyth, Q. Guofu, X. Chen, T. S. Chuan, W. Yong, T. Sun, and K. T. V. Grattan. "Dual Measurement of Strain and Temperature Using the Combination of Er3+ -Doped Fibre Fluorescence Lifetime and a Fibre Bragg Grating." Measurement and Control 34, no. 6 (July 2001): 175–78. http://dx.doi.org/10.1177/002029400103400606.

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Fibre optic sensing devices have been produced for the dual measurement of strain and temperature using the combined properties of fibre Bragg gratings and the fluorescence lifetime of erbium-doped fibre. Two different sensors were constructed with the fibre Bragg grating written in normal fibre and also written directly in the Er3+-doped fibre. Results obtained indicate that this technique can be used to measure strains and temperatures with accuracies of approximately 1.2°C and 20.4 με

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Webb, David J. "Fibre Bragg grating sensors in polymer optical fibres." Measurement Science and Technology 26, no. 9 (August 19, 2015): 092004. http://dx.doi.org/10.1088/0957-0233/26/9/092004.

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13

Haran, Frank M., Jason K. Rew, and Peter D. Foote. "A strain-isolated fibre Bragg grating sensor for temperature compensation of fibre Bragg grating strain sensors." Measurement Science and Technology 9, no. 8 (August 1, 1998): 1163–66. http://dx.doi.org/10.1088/0957-0233/9/8/004.

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14

Kocaman, ES, C. Yilmaz, A. Deniz, and M. Yildiz. "The performance of embedded fiber Bragg grating sensors for monitoring failure modes of foam cored sandwich structures under flexural loads." Journal of Sandwich Structures & Materials 20, no. 5 (September 1, 2016): 553–77. http://dx.doi.org/10.1177/1099636216664777.

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In this study, failure modes of foam core sandwich composites are investigated by using embedded Fiber Bragg Grating sensors. Sandwich specimens with Fiber Bragg Grating sensors, embedded inside the face sheet, are manufactured using vacuum infusion process and then subjected to a static and a cyclic loading under the three-point bending mode. Different failure modes are monitored utilizing the wavelength shift and the spectrum of Fiber Bragg Grating sensors. It is shown that the responses of the Fiber Bragg Grating sensor differ depending on damage modes thereby making structural health monit

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Lee, Songbi, and Joohyeon Lee. "Braided Fabrication of a Fiber Bragg Grating Sensor." Sensors 20, no. 18 (September 14, 2020): 5246. http://dx.doi.org/10.3390/s20185246.

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Our objective was to construct textile braiding manufacturing methods to facilitate high precision and accurate measurements using optical fiber Bragg grating sensors for various structures. We aimed to combine three-dimensional (3D) braiding processing with the optical Bragg grating sensor’s accurate metrology. Outside the limits of the sensor’s epoxy attachment methods, the textile braiding method can diversify the scope of application. The braiding process can be used to design a 3D fabric module process for multiple objective mechanical fiber arrangements and material characteristics. Opti

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16

Mihailov, Stephen J., Cyril Hnatovsky, Nurmemet Abdukerim, Robert B. Walker, Ping Lu, Yanping Xu, Xiaoyi Bao, et al. "Ultrafast Laser Processing of Optical Fibers for Sensing Applications." Sensors 21, no. 4 (February 19, 2021): 1447. http://dx.doi.org/10.3390/s21041447.

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A review of recent progress in the use of infrared femtosecond lasers to fabricate optical fiber sensors that incorporate fiber Bragg gratings (FBG) and random fiber gratings (RFG) is presented. The important advancements in femtosecond laser writing based on the phase mask technique now allow through-the-coating (TTC) fabrication of Bragg gratings in ultra-thin fiber filaments, tilted fiber Bragg gratings, and 1000 °C-resistant fiber Bragg gratings with very strong cladding modes. As an example, through-the-coating femtosecond laser writing is used to manufacture distributed fiber Bragg grati

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17

Broadway, Christian, Frédéric Descamps, Damien Kinet, Christophe Caucheteur, and Patrice Mégret. "Intrinsic Fabry-Perot Sensors for Magnetic Field Detection." EPJ Web of Conferences 170 (2018): 02001. http://dx.doi.org/10.1051/epjconf/201817002001.

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Within the context of ensuring stable nuclear fusion, it is important to monitor and control a number of parametersincluding the magnetic field associated with plasma circulation. Optical fibre sensing techniques have seen a surge in promulgation and research advances in recent years, due to their immunity to electromagnetic radiation and compact dimensions. Prior work has shown that fibre Bragg gratings are one method of recovering the induced magnetic field, with the main point of interest being their use as distributed point sensors. However, Bragg grating inscription leads to the creation

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18

Stevens, Kevin J., Grant V. M. Williams, I. Monfils, D. Hirst, P. Wagner, S. G. Raymond, J. W. Quilty, and My T. T. Do. "Optics-Based Strain Sensing System." Materials Science Forum 700 (September 2011): 178–81. http://dx.doi.org/10.4028/www.scientific.net/msf.700.178.

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An optics-based strain sensing system is being developed for quazi-distributed strain sensing in locations and environments that are not accessible to conventional strain sensors. The system comprises an Optical Interrogator that has been designed and constructed by Southern Photonics [1], and optical fibre coupled Bragg grating strain sensors. It has been tested using commercial fibre Bragg gratings [2] that were attached to 2 samples of 316 grade stainless steel and cycled in strain and temperature using an Instron mechanical testing machine and temperature controlled cabinet. The results ha

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19

Karatas, Cansu, Boray Degerliyurt, Yavuz Yaman, and Melin Sahin. "Fibre Bragg grating sensor applications for structural health monitoring." Aircraft Engineering and Aerospace Technology 92, no. 3 (December 24, 2018): 355–67. http://dx.doi.org/10.1108/aeat-11-2017-0255.

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Purpose Structural health monitoring (SHM) has become an attractive subject in aerospace engineering field considering the opportunity to avoid catastrophic failures by detecting damage in advance and to reduce maintenance costs. Fibre Bragg Grating (FBG) sensors are denoted as one of the most promising sensors for SHM applications as they are lightweight, immune to electromagnetic effects and able to be embedded between the layers of composite structures. The purpose of this paper is to research on and demonstrate the feasibility of FBG sensors for SHM of composite structures. Design/methodol

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20

Lesiak, Piotr, Adam Widomski, Łukasz Szelągowski, Piotr Sobotka, Anna Dużyńska, Anna Wróblewska, Konrad Markowski, Tomasz Osuch, and Tomasz Woliński. "Fiber Bragg grating as UVA sensor." Photonics Letters of Poland 10, no. 1 (March 31, 2018): 14. http://dx.doi.org/10.4302/plp.v10i1.806.

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The idea of this paper implies the possibility to exploit the properties of graphene oxide (GO) to fiber Bragg grating (FBG) UVA radiation sensor design. The idea assumes that a temperature change around the fiber can be induced by UVA radiation. UVA lighting will increase the internal energy of the GO and consequently locally raise the temperature on the surface of the optical fiber with FBG sensor and changing Bragg wavelength Full Text: PDF ReferencesZ. N. Azwa, B. F. Yousif, A. C. Manalo, W. Karunasena, " A review on the degradability of polymeric composites based on natural fibres", Mater

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21

Ramos, Carlos A., José Luís Esteves, Rui A. Silva, and António Torres Marques. "Analyses of Composite Structures Behaviour with Embedded Bragg Grating Sensors." Materials Science Forum 514-516 (May 2006): 614–18. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.614.

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Structural health monitoring of composite structures may be accomplished by measuring strains with embedded optical fibre sensors. In this paper, we present the performance of Bragg grating sensors, which are embedded into a carbon composite laminate and them bonded to the structure in analyse. The paper will briefly discuss the results and compare them with a free fibre Bragg grating bonded in the surface of the carbon composite laminate, with existing electrical strain gauge installation and with a numerical analysis by the finite element method.

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22

Allsop, Thomas, and Ron Neal. "A Review: Evolution and Diversity of Optical Fibre Plasmonic Sensors." Sensors 19, no. 22 (November 8, 2019): 4874. http://dx.doi.org/10.3390/s19224874.

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The purpose of this review is to bring to the attention of the wider research community how two quite different optical sensory techniques were integrated resulting in a sensor device of exceptional sensitivity with wide ranging capability. Both authors have collaborated over a 20 year period, each researching initially surface plasmon resonance (SPR) and optical fibre Bragg grating devices. Our individual research, funded in part by EPSRC and industry into these two areas, converged, resulting in a device that combined the ultra-sensitive working platform of SPR behavior with that of fibre Br

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23

Kenny, R. P., E. Gutierrez, M. P. Whelan, and A. C. Lucia. "Composite Structural Element Characterisation Using Fibre Optic Strain Sensors." Advanced Composites Letters 6, no. 5 (September 1997): 096369359700600. http://dx.doi.org/10.1177/096369359700600501.

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Fibre optic sensor systems have been developed for characterisation and monitoring of structural elements. The particular application area reported here is on testing of pultruded composite beams. Demodulation schemes for in-fibre Bragg grating strain sensors using either Acousto-Optic tuneable filters or passive techniques are described. It is found that the fibre optic sensor measurements correspond well with those of standard electrical gauges, and demonstrate their potential as on-line structural diagnostic devices.

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Hessler, Steffen, Marieke Rüth, Horst-Dieter Lemke, Bernhard Schmauss, and Ralf Hellmann. "Deep UV Formation of Long-Term Stable Optical Bragg Gratings in Epoxy Waveguides and Their Biomedical Sensing Potentials." Sensors 21, no. 11 (June 3, 2021): 3868. http://dx.doi.org/10.3390/s21113868.

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In this article, we summarize our investigations on optimized 248 nm deep ultraviolet (UV) fabrication of highly stable epoxy polymer Bragg grating sensors and their application for biomedical purposes. Employing m-line spectroscopy, deep UV photosensitivity of cross-linked EpoCore thin films in terms of responding refractive index change is determined to a maximum of Δn = + (1.8 ± 0.2) × 10−3. All-polymer waveguide Bragg gratings are fabricated by direct laser irradiation of lithographic EpoCore strip waveguides on compatible Topas 6017 substrates through standard +1/-1-order phase masks. Acc

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Geng, Jin Feng, Dong Fang Ma, Hong Sheng Cai, Wen Tao Wu, Jun Wei Dong, and Xiao Huan Shen. "The Comparison and Analysis of Fiber Grating Strain Sensor and Resistance Strain Slice for Transmission Tower Vibration Monitoring." Applied Mechanics and Materials 533 (February 2014): 211–13. http://dx.doi.org/10.4028/www.scientific.net/amm.533.211.

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Contrast advantages and existing problems of resistance strain slice and fiber grating strain sensor for tower vibration strain monitoring, compare the structure of the two, and do the on-site installation and experiments, analyze the monitoring data. It can make a conclusion that the properties of fiber bragg grating strain sensors are basic consistent with resistance strain slice. And fiber bragg grating strain sensors can be used for transmission tower vibration monitoring .

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Doyle, Crispin, S. Quinn, and Janice M. Dulieu-Barton. "Evaluation of Rugged 'Smart Patch' Fibre-Optic Strain Sensors." Applied Mechanics and Materials 3-4 (August 2006): 343–48. http://dx.doi.org/10.4028/www.scientific.net/amm.3-4.343.

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Fibre-optic sensors have advantages over existing electrical sensors in many strain and stress monitoring applications. However, bare optical fibres are fragile and packaging techniques must be developed before these sensors can be used more widely. One such method is the Smart Patch, in which the fibre Bragg grating is encapsulated between plies of glass-reinforced epoxy where rugged cables are anchored. This forms a flat flexible patch in which the fibre is protected from mechanical and environmental damage. However, it is important that the mechanical strength of the patch is not achieved a

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Cowie, Barbara M., David J. Webb, Betty Tam, Paul Slack, and Peter N. Brett. "Fibre Bragg grating sensors for distributive tactile sensing." Measurement Science and Technology 18, no. 1 (November 30, 2006): 138–46. http://dx.doi.org/10.1088/0957-0233/18/1/017.

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Bogue, Robert. "Structural integrity monitoring with fibre Bragg grating sensors." Sensor Review 25, no. 2 (June 2005): 109–13. http://dx.doi.org/10.1108/02602280510585682.

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Ang, J., H. C. H. Li, I. Herszberg, M. K. Bannister, and A. P. Mouritz. "Tensile fatigue properties of fibre Bragg grating optical fibre sensors." International Journal of Fatigue 32, no. 4 (April 2010): 762–68. http://dx.doi.org/10.1016/j.ijfatigue.2009.11.002.

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Li, D. S., L. Ren, H. N. Li, and G. B. Song. "Structural Health Monitoring of a Tall Building during Construction with Fiber Bragg Grating Sensors." International Journal of Distributed Sensor Networks 8, no. 10 (October 1, 2012): 272190. http://dx.doi.org/10.1155/2012/272190.

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Fiber Bragg grating sensors demonstrate a great potential as a structural health monitoring tool for civil structures to ensure structural integrity, durability, and reliability. The advantages of applying fiber optic sensors to a tall building include their immunity to electromagnetic interference and their multiplexing ability to transfer optical signals over a long distance. In the work, fiber Bragg grating sensors, consisting of strain and temperature sensors, are applied to structural monitoring of an 18-floor tall building since the date of its construction. The strain transferring rate

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Wójcik, Waldemar, Aliya Kalizhanova, Gulzhan Kashaganova, Ainur Kozbakova, Zhalau Aitkulov, and Zhassulan Orazbekov. "RESEARCH OF PARAMETERS OF FIBER-OPTICAL MEASURING SYSTEMS." Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska 9, no. 2 (June 21, 2019): 28–31. http://dx.doi.org/10.5604/01.3001.0013.2543.

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At present there exist a lot of technical devices, the failure of which can be connected not only with huge financial losses, but with the treat to the environment as well. Therefore, an important problem is the effective devices conditions diagnostics, including electronic components and check of their operation. Timely faults detecting allows introducing the prevention measures and avoiding serious consequences. Fiber-optic sensors have several advantages, more important of which include the immunity to electromagnetic disturbances, little weight and possibility to be included into the struc

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Fevery, S., H. Hallez, D. Vandepitte, and S. Debruyne. "Measuring moisture absorption in structural adhesive joints with fibre Bragg grating sensors." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 5 (April 22, 2020): 477–87. http://dx.doi.org/10.1177/0954408920920486.

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The increased joint efficiency, distribution of loads and decrease in stress concentrations have led to the increased use of adhesives for structural bonding. However, there are a limited number of techniques for verifying and monitoring the integrity and durability of adhesive bonds. This article studies the potential of estimating the curing and ageing of adhesive bulk samples with embedded fibre Bragg grating sensors through measuring the strain associated with hygroscopic expansion. This is achieved by relating the output of a fibre Bragg grating sensor to the deformation of the structure

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Heo, Jin Seok, Jong Ha Cheung, and Jung Ju Lee. "Flexible Force Sensors Using Fiber Bragg Grating." Key Engineering Materials 326-328 (December 2006): 1343–46. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1343.

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In this paper, we present a newly designed flexible optical fiber force sensors which use fiber Bragg gratings and diaphragm and bridge type transducer, to detect a distributed normal force and which is the first step toward realizing a tactile sensor using optical fiber sensors (FBG). The transducer is designed such that it is not affected by chirping and light loss to enhance the performance of the sensors. We also present the design and fabrication process and experimental verification of the prototype sensors.

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Norman, D. C. C., D. J. Webb, and R. D. Pechstedt. "Interrogation of fibre Bragg grating sensors using an arrayed waveguide grating." Measurement Science and Technology 16, no. 3 (February 1, 2005): 691–98. http://dx.doi.org/10.1088/0957-0233/16/3/011.

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DU Lei, 杜磊, 龚元 GONG Yuan, 吴宇 WU Yu, 饶云江 RAO Yun-jiang, and 赵天 ZHAO Tian. "Fiber Bragg Grating Settlement Sensors." ACTA PHOTONICA SINICA 40, no. 12 (2011): 1878–80. http://dx.doi.org/10.3788/gzxb20114012.1878.

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Albert, Jacques, Li-Yang Shao, and Christophe Caucheteur. "Tilted fiber Bragg grating sensors." Laser & Photonics Reviews 7, no. 1 (February 27, 2012): 83–108. http://dx.doi.org/10.1002/lpor.201100039.

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McMillen, Ben, Chuck Jewart, Michael Buric, Kevin P. Chen, Yuankun Lin, and Wei Xu. "Fiber Bragg grating vacuum sensors." Applied Physics Letters 87, no. 23 (December 5, 2005): 234101. http://dx.doi.org/10.1063/1.2140082.

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Morey, W. W., J. R. Dunphy, and G. Meltz. "Multiplexing fiber bragg grating sensors." Fiber and Integrated Optics 10, no. 4 (October 1991): 351–60. http://dx.doi.org/10.1080/01468039108201715.

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Lee, Yeon-Gwan, and Chun-Gon Kim. "Impact source identification for pipe structure based on a one-dimensional fiber Bragg grating sensor array." Journal of Intelligent Material Systems and Structures 28, no. 12 (February 23, 2017): 1662–69. http://dx.doi.org/10.1177/1045389x16679292.

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This article presents a spatial impact source identification based on a one-dimensional fiber Bragg grating sensor array for application in tubular structures. The effective number of sensors and the sensor arrangement method were investigated for the plumbing pipe structure as the application subject. The fiber Bragg grating sensors were used to determine the impact location via the signal processing of the measured acoustic emission signals with a sampling frequency of 100 kHz. The root mean squared value–based algorithm, which was newly verified for a stiffened composite structure, was empl

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Kharshiduzzaman, M., A. Gianneo, and A. Bernasconi. "Experimental analysis of the response of fiber Bragg grating sensors under non-uniform strain field in a twill woven composite." Journal of Composite Materials 53, no. 7 (August 9, 2018): 893–908. http://dx.doi.org/10.1177/0021998318793183.

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Fiber Bragg grating optical sensors are nowadays widely employed for strain measurement for structural health monitoring and in experimental mechanics. Compared to other techniques, i.e. electrical strain gauges, fiber Bragg grating offer immunity to electromagnetic interference and allow for long transmission lead lines. Moreover, thanks to multiplexing interrogation, several sensors can be photo-imprinted into a single fiber core allowing for strain evaluation at multiple locations simultaneously. They have high adaptability to composite materials, particularly because it is possible to be e

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Hudson, Tyler B., Nicolas Auwaijan, and Fuh-Gwo Yuan. "Guided wave-based system for real-time cure monitoring of composites using piezoelectric discs and phase-shifted fiber Bragg gratings." Journal of Composite Materials 53, no. 7 (August 15, 2018): 969–79. http://dx.doi.org/10.1177/0021998318793512.

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A real-time, in-process cure monitoring system employing a guided wave-based concept for carbon fiber reinforced polymer composites was developed. The system included a single piezoelectric disc that was bonded to the surface of the composite for excitation, and an embedded phase-shifted fiber Bragg grating for sensing. The phase-shifted fiber Bragg grating almost simultaneously measured both quasi-static strain and the ultrasonic guided wave-based signals throughout the cure cycle. A traditional FBG was also used as a base for evaluating the high sensitivity of the phase-shifted fiber Bragg g

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Zeng, Haiyan, Renjun Yan, Lin Xu, and Siyuan Gui. "Application study on fiber Bragg grating sensors in damage monitoring of sandwich composite joints." Journal of Sandwich Structures & Materials 22, no. 5 (July 18, 2018): 1542–63. http://dx.doi.org/10.1177/1099636218789621.

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This article studies the application of fiber Bragg grating sensors in damage monitoring of sandwich composite L-joints, which aims to reveal the interface damage between the GFRP skin and the foam core. Fiber Bragg grating sensors have been arranged based on numerical results. The ultimate load and failure location via numerical modelling have been experimentally verified. Strains measured by fiber Bragg grating sensors have shown anomalies with load increased, indicating the onset and propagation of damage. Based on the damage-induced strain anomalies, four stages have been addressed to reve

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Mieloszyk, Magdalena. "Fatigue Crack Propagation Monitoring Using Fibre Bragg Grating Sensors." Vibration 4, no. 3 (September 3, 2021): 700–721. http://dx.doi.org/10.3390/vibration4030039.

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The paper presents the analysis of the possibility of fatigue crack detection and monitoring its propagation process using fibre Bragg grating (FBG) sensors. The investigations were carried out on an aluminium alloy sample (a part of the Mi-2 helicopter rotor blade). During the fatigue test, the sample was equipped with FBG sensors applied for strain measurement and the vibration-based strain monitoring. It was observed that the strain curves determined by the FBG sensors agreed well with the fatigue force profile. However, the strain curves were almost insensitive to the crack propagation pro

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Xiong, Ziming, Qinghua Zhang, Hao Lu, Shaoshuai Shi, Zewei You, Yuanpu Xia, and Lin Bu. "Evaluation and identification of dynamic strain on a blast door subjected to blast loading using fibre Bragg grating sensors." International Journal of Distributed Sensor Networks 14, no. 3 (March 2018): 155014771876686. http://dx.doi.org/10.1177/1550147718766860.

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Tunnels and subway blast doors are effective barriers to terrorist attacks and emergencies, and research into the mechanical properties of blast doors under explosive dynamic loads can improve and enhance the performance thereof. In this article, surface strain measurements on subway blast door models under dynamic load are carried out using quasi-distributed fibre Bragg grating sensors. The principle underpinning fibre Bragg grating sensing is introduced before the experiment. In the experiment, a model of an explosion-proof door was designed, and the experimental foundation pit was designed

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Kuang, K. S. C., R. Kenny, M. P. Whelan, W. J. Cantwell, and P. R. Chalker. "Embedded fibre Bragg grating sensors in advanced composite materials." Composites Science and Technology 61, no. 10 (August 2001): 1379–87. http://dx.doi.org/10.1016/s0266-3538(01)00037-9.

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Barbosa, C., N. Costa, L. A. Ferreira, F. M. Araújo, H. Varum, A. Costa, C. Fernandes, and H. Rodrigues. "Weldable fibre Bragg grating sensors for steel bridge monitoring." Measurement Science and Technology 19, no. 12 (October 17, 2008): 125305. http://dx.doi.org/10.1088/0957-0233/19/12/125305.

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Kouroussis, Georges, Damien Kinet, Véronique Moeyaert, Julien Dupuy, and Christophe Caucheteur. "Railway structure monitoring solutions using fibre Bragg grating sensors." International Journal of Rail Transportation 4, no. 3 (May 17, 2016): 135–50. http://dx.doi.org/10.1080/23248378.2016.1184598.

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Tosi, D., M. Olivero, A. Vallan, and G. Perrone. "Weigh-in-motion through fibre Bragg grating optical sensors." Electronics Letters 46, no. 17 (2010): 1223. http://dx.doi.org/10.1049/el.2010.1827.

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Brady, G. P., S. Hope, A. B. Lobo Ribeiro, D. J. Webb, L. Reekie, J. L. Archambault, and D. A. Jackson. "Demultiplexing of fibre Bragg grating temperature and strain sensors." Optics Communications 111, no. 1-2 (September 1994): 51–54. http://dx.doi.org/10.1016/0030-4018(94)90137-6.

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Silva, A. F., F. Gonçalves, L. A. A. Ferreira, F. M. Araújo, P. M. Mendes, and J. Higino Correia. "Fiber Bragg Grating Sensors Integrated in Polymeric Foils." Materials Science Forum 636-637 (January 2010): 1548–54. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.1548.

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Optical sensors have hit their maturity and a new kind of systems is being developed. This paper deals with the development of a new sensing structure based on polymeric foils and optic fiber sensors, namely the Fiber Bragg Grating sensors. Sensor integration in polymeric foils, using industrial process is the proposed goal. To achieve this goal, Finite Element Analysis was used for prototype modeling and simulation. The model was subjected to loads and restraints in order to retrieve information about stress distribution and displacement of specific points. From the simulation was possible to

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