Gotowe bibliografie tematyczne / Fibre Bragg Grating sensors

Spis treści

Artykuły w czasopismach
Rozprawy doktorskie
Książki
Części książek
Streszczenia konferencji
Raporty organizacyjne

Gotowa bibliografia na temat „Fibre Bragg Grating sensors”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych

Wybierz rodzaj źródła:

Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Fibre Bragg Grating sensors”.

Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.

Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.

Artykuły w czasopismach na temat "Fibre Bragg Grating sensors"

Broadway, Christian, Damien Kinet, Antreas Theodosiou, Kyriacos Kalli, Andrei Gusarov, Christophe Caucheteur i Patrice Mégret. "CYTOP Fibre Bragg Grating Sensors for Harsh Radiation Environments". Sensors 19, nr 13 (27.06.2019): 2853. http://dx.doi.org/10.3390/s19132853.

Pełny tekst źródła

Streszczenie:

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 CYTOP fibres.

Style APA, Harvard, Vancouver, ISO itp.

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

Pełny tekst źródła

Streszczenie:

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 fibers. Special fiber grating structures are of interest e.g. in the visible wavelength range, which requires smaller spatial structures compared to more conventional gratings in the near infrared wavelength region. Examples for such modern developments in fiber Bragg grating technology for sensor applications will be presented and discussed.

Style APA, Harvard, Vancouver, ISO itp.

Voet, Eli, Geert Luyckx, Ives De Baere, Joris Degrieck, J. Vlekken, E. Jacobs i 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 (wrzesień 2008): 441–46. http://dx.doi.org/10.4028/www.scientific.net/ast.56.441.

Pełny tekst źródła

Streszczenie:

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 grating sensors are known to be very accurate strain sensors but one should be very careful interpreting their response once they are imbedded inside composite materials. In this study high strength fibre Bragg grating sensors with coating are imbedded in composite test coupons and a pretty good correlation was found between the strain measurements of an electrical extensometer and the imbedded sensor during the complete cycling. The high strength sensor show to be very feasible for extreme and long term strain measurements.

Style APA, Harvard, Vancouver, ISO itp.

Tian, Zhenhua, Lingyu Yu, Xiaoyi Sun i Bin Lin. "Damage localization with fiber Bragg grating Lamb wave sensing through adaptive phased array imaging". Structural Health Monitoring 18, nr 1 (19.02.2018): 334–44. http://dx.doi.org/10.1177/1475921718755572.

Pełny tekst źródła

Streszczenie:

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 grating sensors along a straight line and axially in parallel to each other. The Lamb wave imaging is then performed by phased array algorithms without weighting factors (conventional delay-and-sum) and with adaptive weighting factors (minimum variance). The properties of both imaging algorithms, as well as the effects of fiber Bragg grating’s direction-dependent sensor factor, are characterized, analyzed, and compared in details. The results show that this compact fiber Bragg grating array can precisely locate damage in plates, while the comparisons show that the minimum variance method has a better imaging resolution than that of the delay-and-sum method and is barely affected by fiber Bragg grating’s direction-dependent sensor factor. Laboratory tests are also performed with a four–fiber Bragg grating array to detect simulated defects at different directions. Both delay-and-sum and minimum variance methods can successfully locate defects at different positions, and their results are consistent with analytical predictions.

Style APA, Harvard, Vancouver, ISO itp.

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

Pełny tekst źródła

Streszczenie:

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 acting upon it. This is an integrated sensor since the fibre length bonded to the sample needs to be greater than the ultrasonic wavelength in order to obtain the required sensitivity. The maximum sensitivity of this sensor is when the fibre is positioned normal to the direction of wave propagation. Fibre Bragg gratings are essentially point sensors since the grating length needs to be a fraction of the ultrasound wavelength to obtain maximum sensitivity. Ultrasound is detected mainly through the in-plane strain it produces and maximum sensitivity is therefore produced when the grating is aligned parallel to the direction of wave propagation. Holes drilled into sample plates can be detected using both type of sensor by examining the changes in either the transmitted Lamb wave or through detection of the reflections produced by the hole. The sensitivity of the technique is shown to be determined by the relative positions of the acoustic source, the hole and the sensor. If we use fibre Bragg gratings in a rosette configuration (i.e. 3 gratings forming an equilateral triangle) then the direction of the Lamb wave can be determined using the directional sensitivities of the gratings. Using two such rosettes allows us to calculate the source of the wave from the intersection of two of these directions. If the source of the wave is the hole (which acts as a passive source), then the location of that hole can be determined.

Style APA, Harvard, Vancouver, ISO itp.

Rao, Yun-Jiang. "In-fibre Bragg grating sensors". Measurement Science and Technology 8, nr 4 (1.04.1997): 355–75. http://dx.doi.org/10.1088/0957-0233/8/4/002.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Zhang, Naizhong, Claire Davis, Wing K. Chiu, Tommy Boilard i Martin Bernier. "Fatigue Performance of Type I Fibre Bragg Grating Strain Sensors". Sensors 19, nr 16 (12.08.2019): 3524. http://dx.doi.org/10.3390/s19163524.

Pełny tekst źródła

Streszczenie:

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-coated fibres, sensors written during the fibre draw process and sensors written through fibre coating. Fatigue cycling of the fibres is provided by a customized electro-dynamically actuated loading assembly designed to provide high frequency and amplitude loading. Pre- and post-fatigue microscopic analysis and high-resolution transmission and reflection spectra scanning are conducted to investigate the fatigue performance of FBGs, the failure regions of fibres as well as any fatigue-related effects on the spectral profiles. It was found that because of the unique fabrication method, the sensors written through the fibre coating, also known as trans-jacket FBGs, show better fatigue performance than stripped and re-coated FBGs with greater control possible to tailor the optical reflection properties compared to gratings written in the draw tower. This emerging method for inscription of Type I gratings opens up the potential for mass production of higher reflectivity, apodised sensors with dense or complex array architectures which can be adopted as sensors for harsh environments such as in defence and aerospace industries.

Style APA, Harvard, Vancouver, ISO itp.

Mrad, Nezih. "POTENTIAL OF BRAGG GRATING SENSORS FOR AIRCRAFT HEALTH MONITORING". Transactions of the Canadian Society for Mechanical Engineering 31, nr 1 (marzec 2007): 1–17. http://dx.doi.org/10.1139/tcsme-2007-0001.

Pełny tekst źródła

Streszczenie:

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 understanding of technical and practical issues related to full implementation of a fibre optic sensor based structural health monitoring system for aerospace and military platforms. It also reports experimental findings on the use of fibre Bragg grating sensors for measurement of parameters relevant to aircraft structural monitoring and smart structures; with an emphasis on the suitability of multifunctional fibre optic sensor system. Experimental evaluations revealed that Bragg grating sensors correlate well with conventional sensors technology for temperature, stain, crack growth and cure monitoring and were insensitive to pressures up to 300 psi. These sensors were determined to have minimum impact on the structural integrity when embedded parallel to host fibres into composite laminates. Recommendations on the implementation and integration of these sensors into a structural health monitoring system are also provided.

Style APA, Harvard, Vancouver, ISO itp.

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.

Pełny tekst źródła

Streszczenie:

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.

Style APA, Harvard, Vancouver, ISO itp.

Nordmeyer, Ulrich, Niels Neumann, Xiaozhou Wang, Dirk Plettemeier, Torsten Thiel i Konstantin Kojucharow. "Evaluation of optical fibre sensors in the electrical domain". Journal of Sensors and Sensor Systems 9, nr 2 (15.07.2020): 199–208. http://dx.doi.org/10.5194/jsss-9-199-2020.

Pełny tekst źródła

Streszczenie:

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 optical sensor and carry out a full electrical analysis of the resulting radio frequency (RF) signal, which is changed by the sensor's characteristics. This method will be investigated in this paper for fibre Bragg grating-based and chirped fibre Bragg grating-based sensors in reflection and transmission configuration. Their applicability for this new evaluation scheme will be discussed. Subsequent studies may cover additional types of sensors and the testing of the novel evaluation method within an application-related scenario, including packaging.

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Rozprawy doktorskie na temat "Fibre Bragg Grating sensors"

Fallon, Richard W. "Fibre Bragg grating strain sensors". Thesis, Aston University, 2000. http://publications.aston.ac.uk/15304/.

Pełny tekst źródła

Streszczenie:

The fabrication of in-fibre Bragg gratings (FBGs) and their application as sensors is reported. The strain and temperature characteristic results for a number of chirped and uniform gratings written into three different host fibres are presented. The static and dynamic temperature response of a commercially available temperature compensated grating is reported. A five sensor wavelength division multiplexed fibre Bragg grating strain measurement system with an interrogation rate of 25 Hz and resolution of 10 was constructed. The results from this system are presented. A novel chirped FBG interrogation method was implemented in both the 1.3 and 1.5 m telecommunication windows. Several single and dual strain sensor systems, employing this method, were constructed and the results obtained from each are reported and discussed. These systems are particularly suitable for the measurement of large strain. The results from a system measuring up to 12 m and with a potential measurement range of 30 m are reported. This technique is also shown to give an obtainable resolution of 20 over a measurement range of 5 000 for a dual sensor system. These systems are simple, robust, passive and easy to implement. They offer low cost, high speed and, in the case of multiple sensors, truly simultaneous interrogation. These advantages make this technique ideal for strain sensing in SMART structures. Systems based on this method have been installed in the masts of four superyachts. A system, based on this technique, is currently being developed for the measurement of acoustic waves in carbon composite panels. The results from an alternative method for interrogating uniform FBG sensors are also discussed. Interrogation of the gratings was facilitated by a specifically written asymmetric grating which had a 15 nm long linearly sloped spectral edge. This technique was employed to interrogate a single sensor over a measurement range of 6 m and two sensors over a range of 4.5 me. The results obtained indicated achievable resolutions of 47 and 38 respectively.

Style APA, Harvard, Vancouver, ISO itp.

Brady, Geoffrey Phillip. "Fibre Bragg grating sensors : interrogation and multiplexing techniques". Thesis, University of Kent, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309781.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Rigg, Euan. "Fibre Bragg grating sensors for component shape change measurement". Thesis, Heriot-Watt University, 2004. http://hdl.handle.net/10399/247.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Main, Andrew Stuart. "Low-cost interrogation of optical fibre Bragg grating sensors". Thesis, Aston University, 2007. http://publications.aston.ac.uk/8101/.

Pełny tekst źródła

Streszczenie:

Through the application of novel signal processing techniques we are able to measure physical measurands with both high accuracy and low noise susceptibility. The first interrogation scheme is based upon a CCD spectrometer. We compare different algorithms for resolving the Bragg wavelength from a low resolution discrete representation of the reflected spectrum, and present optimal processing methods for providing a high integrity measurement from the reflection image. Our second sensing scheme uses a novel network of sensors to measure the distributive strain response of a mechanical system. Using neural network processing methods we demonstrate the measurement capabilities of a scalable low-cost fibre Bragg grating sensor network. This network has been shown to be comparable with the performance of existing fibre Bragg grating sensing techniques, at a greatly reduced implementation cost.

Style APA, Harvard, Vancouver, ISO itp.

Nuttavut, Narin. "Optical fibre sensors based on Bragg grating : an interferometric approach". Thesis, Imperial College London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396042.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bezombes, Frédéric. "Fibre Bragg grating temperature sensors for high-speed machining applications". Thesis, Liverpool John Moores University, 2004. http://researchonline.ljmu.ac.uk/5630/.

Pełny tekst źródła

Streszczenie:

In high-speed grinding research, it is required to measure temperature within the workpiece. Present techniques are thermocouple based, and often suffer from excessive electrical noise on the signal. This thesis presents a number of novel and existing optical sensing devices that overcome this limitation and also, in some cases, offer greater performance. The optical sensors are fibre Bragg grating based and the optical techniques used to interrogate that sensor include DWDM, WDM, athermic grating, tuneable grating and coupler. Optical fibre devices are simpler to place in situ prior to the machining tests and they offer faster response and greater sensitivity than was previously possible. Results are presented from machining tests and the new devices are compared with each other and thermocouple based techniques. A method to relate internal measured temperature to machined surface temperature is also demonstrated in the context of high-speed machining.

Style APA, Harvard, Vancouver, ISO itp.

Lloyd, Glynn D. "Resonant cavity Fibre Bragg grating sensor interrogation". Thesis, Aston University, 2004. http://publications.aston.ac.uk/8007/.

Pełny tekst źródła

Streszczenie:

This thesis presents a novel high-performance approach to time-division-multiplexing (TDM) fibre Bragg grating (FBG) optical sensors, known as the resonant cavity architecture. A background theory of FBG optical sensing includes several techniques for multiplexing sensors. The limitations of current wavelength-division-multiplexing (WDM) schemes are contrasted against the technological and commercial advantage of TDM. The author’s hypothesis that ‘it should be possible to achieve TDM FBG sensor interrogation using an electrically switched semiconductor optical amplifier (SOA)’ is then explained. Research and development of a commercially viable optical sensor interrogator based on the resonant cavity architecture forms the remainder of this thesis. A fully programmable SOA drive system allows interrogation of sensor arrays 10km long with a spatial resolution of 8cm and a variable gain system provides dynamic compensation for fluctuating system losses. Ratiometric filter- and diffractive-element spectrometer-based wavelength measurement systems are developed and analysed for different commercial applications. The ratiometric design provides a low-cost solution that has picometre resolution and low noise using 4% reflective sensors, but is less tolerant to variation in system loss. The spectrometer design is more expensive, but delivers exceptional performance with picometre resolution, low noise and tolerance to 13dB system loss variation. Finally, this thesis details the interrogator’s peripheral components, its compliance for operation in harsh industrial environments and several examples of commercial applications where it has been deployed. Applications include laboratory instruments, temperature monitoring systems for oil production, dynamic control for wind-energy and battery powered, self-contained sub-sea strain monitoring.

Style APA, Harvard, Vancouver, ISO itp.

Rito, Rodolfo N. L. "Monitoring damage development in composite repairs using chirped fibre Bragg grating sensors". Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/808351/.

Pełny tekst źródła

Streszczenie:

Composite repairs are often used for damaged structures in order to recover the mechanical properties of the original structure. During service, there is the possibility that damage will occur in the repaired region and hence it would be useful to be able to monitor such repairs. This research investigates the use of chirped fibre Bragg grating (CFBG) sensors to monitor the development of fatigue damage initiation and growth in the repaired region of three different repair systems, i.e. glass fibre reinforced polymer (GFRP)-to-GFRP scarf repair, GFRP-to-GFRP patch repair and a GFRP patch repair to an aluminium panel. All of these repairs were investigated using a combination of experimental testing and theoretical predictions using finite-element analysis and optical prediction software. For each repair system, the CFBG sensor was embedded in the bond-line during the repair fabrication and the transparency of the GFRP material enabled damage to be observed and recorded. The work began by fatigue loading the GFRP-to-GFRP scarf repair coupon under 4-point bending. The CFBG sensor was embedded in the tensile side of the repair. For this system, the growth of the bond-line cracks could be detected but an accurate determination of the extent of damage was not possible. This was mostly due to the geometry of the scarf repair which led to a high degree of complexity in the interpretation of the data. There was good agreement between the trend of the changes in the spectra in the comparisons of the experimental results and finite-element/optical modelling, although the experimental spectra showed smaller changes than were produced by the modelling. The second repair system investigated was the GFRP-to-GFRP patch repair which was tested in the same way as the scarf repair system. An asymmetric repair was fabricated with the patch being bonded on the tensile face of the coupon. Here, it can be said that growth of the bond-line cracks can be detected using CFBG sensors, and an accurate determination of the current length of the cracks from the spectra was achieved. A explanation of the shift of the low-wavelength end of the spectrum changes with increasing crack growth was provided in terms of strain field change caused by the bond-line cracks. There was good agreement in the comparisons of the experimental results and finite-element/optical modelling. Finally, the third repair system investigated was the patch repair of an aluminium panel which was fatigue loaded in tension. Prior to repair, the aluminium panel was notched at the centre in order to promote crack initiation. Again, an asymmetric repair was fabricated. It can be concluded from the results that the embedded sensor could clearly detect the approach of a fatigue crack and indicate when the crack had passed the location of the sensor. Again, there was good agreement in the comparisons of the experimental results and finite-element/optical modelling. The work has shown that CFBG sensors can be used to monitor damage development in various types of repairs and can give an indication of damage initiation for all of the cases investigated. However, where there is significant geometrical complexity to the repair, as in the case of a scarf repair, detailed interpretation of the spectra in order to extract information on damage growth is much more difficult.

Style APA, Harvard, Vancouver, ISO itp.

Dockney, Michael Lee. "Fabrication of wavelength division multiplexed in-fibre Bragg grating arrays for structural monitoring applications". Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245338.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Comanici, Maria Iulia. "Interrogation systems for fiber Bragg grating-based sensors". Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95079.

Pełny tekst źródła

Streszczenie:

As the potential application of fiber optic sensors broadens, there is much interest in finding measurement systems that are simple, cost effective and show high power efficiency. The latter is extremely useful when dealing with multiplexed sensors distributed over large distances, which results in high signal attenuation and limits the number of sensors that can be interrogated by a minimum number of measurement units. In this thesis we explore a fiber laser-based wavelength-to-power mapping interrogation system for wavelength-division-multiplexed FBG sensors, and we prove that such solution offers increased measurement reliability with high power efficiency. Another aspect of improving the performance of sensing systems is the ability to measure multiple parameters, which are extremely useful when working with FBG-based sensors experiencing similar changes in spectral characteristics in response to changes in temperature or strain. These can be discriminated when they can be measured using different interrogation methods. For this purpose, we first explore and evaluate the performance of a vibration sensor designed by QPS Photronics, and we prove that it can be used to measure temperature and/or strain by translating the changes in its sinusoidal multi-wavelength spectrum to changes in the response of a single pass-band microwave photonic filter (MPF). The operation principle is based on monitoring the shift of the main filter band as temperature or strain changes. We demonstrate that such a system can achieve high-speed measurement with variable sensitivity.
Avec la croissance de l'application potentielle des capteurs à fibres optiques, il est important de trouver des systèmes de mesure simples, à coût réduit, et présentant une efficacité de puissance élevée. Celle-ci est extrêmement utile quand il s'agit de multiplexer des capteurs distribués sur des grandes distances, ce qui contribue à l'augmentation de l'atténuation du signal optique et impose une limite au nombre de capteurs qui peuvent être interrogés en utilisant un minimum d'unités de mesure. Dans cette thèse nous explorons un système d'interrogation basé sur un laser à fibre optique pour réaliser la traduction de la longueur d'onde en une mesure de puissance pour les capteurs à base de réseaux de Bragg. Nous prouvons que grâce à cette solution nous pouvons augmenter la fiabilité de la mesure avec une efficacité de puissance élevée ainsi que de réduire les erreurs de la mesure. Pour augmenter la performance d'un système de capteurs, il est aussi important de pouvoir mesurer de paramètres additionnels. Ceci est extrêmement important quand le capteur est base sur des réseaux de Bragg qui ont une réponse similaire aux changements de température ou tension. Ces deux facteurs peuvent être distingués en utilisant des méthodes d'interrogation différentes. Ainsi, nous explorons et évaluons premièrement la performance d'un capteur de vibration conçu par QPS Photronics. Nous prouvons qu'il est possible de mesurer aussi la température et/ou la tension en traduisant les changements du spectre à plusieurs longueurs d'onde en des changements de la réponse d'un filtre à micro-ondes photoniques (MPF) à une seule bande passante. Le principe de l'opération du système est base sur la surveillance du déplacement de la bande passante principale du filtre quand la température ou la tension de la fibre changent. Nous montrons qu'un tel système est capable d'assurer une mesure très rapide avec une sensibilité variable.

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Książki na temat "Fibre Bragg Grating sensors"

Daud, Suzairi, i Jalil Ali. Fibre Bragg Grating and No-Core Fibre Sensors. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90463-4.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Melle, Serge Michel. A wavelength demodulation system for use with fibre optic Bragg grating sensors. [Toronto, Ont.]: University of Toronto, 1992.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Lee, Xavier. Development of a Bragg grating fabrication facility and demonstration of its capabilities in fibre based telecommunication, laser, and sensor applications. [Toronto, Ont.]: University of Toronto, Graduate Dept. of Aerospace Engineering, 1995.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Lee, Xavier. Development of a bragg grating fabrication facility and demonstration of its capabilities in fibre based telecommunication, laser, and sensor applications. Ottawa: National Library of Canada, 1994.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Cooper, David J. F. Time division multiplexing of a serial fibre optic Bragg grating sensor array. Ottawa: National Library of Canada, 1999.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Mulvihill, Paul. Manufacturing optical fibre Bragg grating strain sensors with an excimer laser for high-strain, multiplexed embedded applications. [Toronto]: University of Toronto institute for Aerospace Studies, 1997.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Mulvihill, Paul. Manufacturing optical fibre Bragg grating strain sensors with an excimer laser for high-strain, multiplexed embedded applications. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Grattan, K. T. V. Optical Fiber Sensor Technology: Advanced Applications - Bragg Gratings and Distributed Sensors. Boston, MA: Springer US, 2000.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bigué, Jason. Development of a novel serially multiplexed fiber Bragg grating sensor system using Fourier analysis. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1999.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bigué, Jason. Development of a novel serially multiplexed fiber Bragg grating sensor system using Fourier analysis. [Toronto]: Univsity of Toronto Institute for Aerspace Studie, 1997.

Znajdź pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Więcej źródeł

Części książek na temat "Fibre Bragg Grating sensors"

Bartelt, Hartmut. "Fiber Bragg Grating Sensors and Sensor Arrays". W Advances in Science and Technology, 138–44. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-12-5.138.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Suresh, R., S. C. Tjin i J. Hao. "Applications of Fiber Bragg Grating Sensors". W Advanced Topics in Science and Technology in China, 441–80. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24463-6_12.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Rao, Y. J. "Fiber Bragg grating sensors: principles and applications". W Optical Fiber Sensor Technology, 355–79. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5787-6_11.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Ning, Y. N., i B. T. Meggitt. "Fiber Bragg grating sensors: signal processing aspects". W Optical Fiber Sensor Technology, 381–417. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5787-6_12.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Bhowmik, Kishore, Gang-Ding Peng, Eliathamby Ambikairajah i Ginu Rajan. "High Sensitivity Polymer Fibre Bragg Grating Sensors and Devices". W Photonic Materials for Sensing, Biosensing and Display Devices, 289–314. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-24990-2_10.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Ramos, C. A., R. de Oliveira, R. D. S. G. Campilho i A. T. Marques. "Modelling of fibre Bragg grating sensor plates". W III European Conference on Computational Mechanics, 168. Dordrecht: Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-5370-3_168.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Jäckle, Sonja, Jan Strehlow i Stefan Heldmann. "Shape Sensing with Fiber Bragg Grating Sensors". W Informatik aktuell, 258–63. Wiesbaden: Springer Fachmedien Wiesbaden, 2019. http://dx.doi.org/10.1007/978-3-658-25326-4_58.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Heo, Jin Seok, Jong Ha Cheung i Jung Ju Lee. "Flexible Force Sensors Using Fiber Bragg Grating". W Experimental Mechanics in Nano and Biotechnology, 1343–46. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-415-4.1343.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Iadicicco, Agostino, Antonello Cutolo i Andrea Cusano. "Fiber Bragg Grating Sensors - Advancements and Industrial Applications". W Advances in Science and Technology, 213–22. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-12-5.213.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Ferdinand, P., S. Magne, V. Dewynter-Marty, C. Martinez, G. Laffont, S. Rougeault, V. Gerbe, J. Boussoir i J. Balageas. "Fibre Bragg Grating Sensors and Instrumentation are now Off-the-shelf". W Interferometry in Speckle Light, 625–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57323-1_78.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Streszczenia konferencji na temat "Fibre Bragg Grating sensors"

Papachristou, Nikolitsa, Jonathan Morton, Adrian Dzipalski, Dimitrios Polyzos, Robert R. J. Maier i William N. MacPherson. "Fibre Bragg Grating based Attitude Sensor". W Optical Fiber Sensors. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/ofs.2018.tue89.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Brady, G. P., S. Hope, Antonio B. Lobo Ribeiro, David J. Webb, Laurence Reekie, Jean-Luc Archambault i David A. Jackson. "Bragg grating temperature and strain sensors". W 10th Optical Fibre Sensors Conference. SPIE, 1994. http://dx.doi.org/10.1117/12.184975.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Gill, Apninder, Kara Peters i Michel Studer. "Genetic Algorithm for the Reconstruction of Bragg Grating Sensor Strain Distribution". W ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42669.

Pełny tekst źródła

Streszczenie:

Optical fiber Bragg gratings are unique among embedded strain sensors due to their potential to measure strain distributions with a spatial resolution of a few nanometers over gage lengths of a few centimeters. This article presents a genetic algorithm for the interrogation of optical fiber Bragg grating strain sensors. The method calculates the period distribution along the Bragg grating which can then be directly related to the axial strain distribution. The period distribution is determined from the output intensity spectrum of the grating via a T-matrix approach. The genetic algorithm inversion method presented requires only intensity information and reconstructs non-linear and discontinuous distributions well, including regions with significant gradients. The method is demonstrated through example reconstructions of Bragg grating sensor simulated data. The development of this algorithm will permit the use of Bragg grating sensors for damage identification in regions close to localized damages where strong strain non-linearities occur.

Style APA, Harvard, Vancouver, ISO itp.

Correia, Ricardo N., Edmon Chehura, Stephen W. James i Ralph P. Tatam. "Locally Pressed Fibre Bragg Grating Pressure Sensor". W Optical Fiber Sensors. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/ofs.2006.tue32.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Hannusch, Susann, Thomas Lehmann, Norbert Schramm, Martin Stockmann, Jörn Ihlemann i Lothar Kroll. "Functionality of embedded fibre Bragg grating sensors". W Optical Fiber Sensors. Washington, D.C.: OSA, 2018. http://dx.doi.org/10.1364/ofs.2018.tub6.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Au, H. Y., S. K. Khijwania i H. Y. Tam. "Fiber Bragg grating based accelerometer". W 19th International Conference on Optical Fibre Sensors, redaktor David D. Sampson. SPIE, 2008. http://dx.doi.org/10.1117/12.785992.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Kersey, Alan D., i Michael J. Marrone. "Fiber Bragg grating high-magnetic-field probe". W 10th Optical Fibre Sensors Conference. SPIE, 1994. http://dx.doi.org/10.1117/12.184991.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

"Trans-Jacket Fibre Bragg Gratings for In-Situ Health Monitoring of Defence Platforms in Harsh Environments". W Structural Health Monitoring. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901311-6.

Pełny tekst źródła

Streszczenie:

Abstract. Packaged optical fibre sensors offer excellent strength and resistance to environmental degradation, but the reported reliability and durability of fibres containing fibre Bragg gratings (FBGs) varies greatly. This is partly due to the fabrication methodologies used to create the sensors. The trans-jacket grating inscription technique uses an infrared laser to write gratings into the fibre core through the polymer coating. This method eliminates the need for harsh coating removal processes and exposure of the glass fibre core and thus dramatically reduces fibre damage during grating fabrication. In addition, the automated trans-jacket inscription process introduces greater flexibility to control the writing parameters, facilitating a consistent process for producing robust, fatigue resistant distributed FBG sensing arrays with reliable and repeatable performance that could revolutionise their application in structural health monitoring (SHM). This paper reports on the durability and reliability of Bragg gratings with different fibre geometries, dopants, and photo-sensitising approaches to compare the overall fatigue performance of trans-jacket FBG sensors. Both type I gratings which are inscribed using a laser power intensity below the damage threshold of the glass core, and type II gratings which are inscribed exceeding this threshold, are considered. The fatigue performance of these FBG sensors was assessed using a custom designed electro-dynamically actuated loading assembly. It is concluded that type I trans-jacket gratings have a significantly higher fatigue life compared to type II gratings for the same fatigue loading regime. Despite the lower fatigue life, type II trans-jacket gratings are found to perform significantly better than conventional electrical foil gauges. Therefore, trans-jacket gratings have significant potential for application as dense sensing arrays in harsh operational environments in defence and aerospace industries.

Style APA, Harvard, Vancouver, ISO itp.

Stepien, Karol, Michalina Jóźwik i Tomasz Nasilowski. "Interferometric fiber Bragg grating shift demodulation". W International Conference on Optical Fibre Sensors (OFS24), redaktorzy Hypolito J. Kalinowski, José Luís Fabris i Wojtek J. Bock. SPIE, 2015. http://dx.doi.org/10.1117/12.2194883.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Guo, Tuan, Liyang Shao, Hoyin Au, Hwa-yaw Tam i Jacques Albert. "Tilted fiber Bragg grating-based accelerometer". W 20th International Conference on Optical Fibre Sensors, redaktor Julian D. C. Jones. SPIE, 2009. http://dx.doi.org/10.1117/12.834936.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Raporty organizacyjne na temat "Fibre Bragg Grating sensors"

McCary, Kelly Marie. Evaluation of Fiber Bragg Grating and Distributed Optical Fiber Temperature Sensors. Office of Scientific and Technical Information (OSTI), kwiecień 2017. http://dx.doi.org/10.2172/1369366.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

McCary, K. M. Evaluation of Fiber Bragg Grating and Distributed Optical Fiber Temperature Sensors. Office of Scientific and Technical Information (OSTI), kwiecień 2017. http://dx.doi.org/10.2172/1466685.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Elam, Kyle A. Isolation of Thermal and Strain Responses in Composites Using Embedded Fiber Bragg Grating Temperature Sensors. Fort Belvoir, VA: Defense Technical Information Center, maj 2013. http://dx.doi.org/10.21236/ada581851.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Todd, Michael, Lex Malsawma, C. C. Chang i Gregg Johnson. The Use of Fiber Bragg Grating Strain Sensors in Laboratory and Field Load Tests: Comparison to Conventional Resistive Strain Gages. Fort Belvoir, VA: Defense Technical Information Center, listopad 1999. http://dx.doi.org/10.21236/ada370789.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Crespo, Antonio. Error Measurements in an Acousto-Optic Tunable Filter Fiber Bragg Grating Sensor System. Fort Belvoir, VA: Defense Technical Information Center, maj 1994. http://dx.doi.org/10.21236/ada283912.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Zhang, Lin. High Extinction Ratio In-Fibre Polarisers by Exploiting Tilted Fibre Bragg Grating Structures for Single-Polarisation High-Power Fibre Lasers and Amplifiers. Fort Belvoir, VA: Defense Technical Information Center, listopad 2009. http://dx.doi.org/10.21236/ada524631.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Huntley, D., P. Bobrowsky, Q. Zhang, X. Zhang i Z. Lv. Fibre Bragg grating and Brillouin optical time domain reflectometry monitoring manual for the Ripley Landslide, near Ashcroft, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2017. http://dx.doi.org/10.4095/304235.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Oferujemy zniżki na wszystkie plany premium dla autorów, których prace zostały uwzględnione w tematycznych zestawieniach literatury. Skontaktuj się z nami, aby uzyskać unikalny kod promocyjny!