State-of-the-art optical fiber pressure sensors use displacement diaphragms and mechanical transducers to enhance pressure sensitivity, however, due to their bulkiness and large size they can’t be easily integrated inside pressure guide wire for intravital monitoring. Fiber Bragg Gratings (FBGs) due to their inherent advantages can be designed in a way that is suitable for monitoring Intracranial Pressure (ICP) and Instantaneous Wave-Free Ratio (iFR) pressure indices. The main disadvantage of FBG is that it has a low-pressure sensitivity of 3.04pm/MPa, which is insufficient for these applications and is made worse by the cross-sensitivity caused by temperature. We hereby present a two-pronged strategy to tackle this issue. The first step in improving sensitivity is to modify FBGs, and the second is to use signal processing methods to recover minor wavelength shifts. A frequency-selective detection technique can be used to measure sub-pm wavelength shifts for small modulated pressure signals. This technique was used to establish a test bench for measuring the pressure sensitivity of standard acrylate and polyimide coated FBGs as well as to confirm a linear relationship between the pressure range of interest and Bragg wavelength shift.
{"title":"Optical fiber pressure sensing for biomedical applications using frequency selective technique","authors":"Mahindra Nagar, M. Lai, D. Janner","doi":"10.1117/12.2678994","DOIUrl":"https://doi.org/10.1117/12.2678994","url":null,"abstract":"State-of-the-art optical fiber pressure sensors use displacement diaphragms and mechanical transducers to enhance pressure sensitivity, however, due to their bulkiness and large size they can’t be easily integrated inside pressure guide wire for intravital monitoring. Fiber Bragg Gratings (FBGs) due to their inherent advantages can be designed in a way that is suitable for monitoring Intracranial Pressure (ICP) and Instantaneous Wave-Free Ratio (iFR) pressure indices. The main disadvantage of FBG is that it has a low-pressure sensitivity of 3.04pm/MPa, which is insufficient for these applications and is made worse by the cross-sensitivity caused by temperature. We hereby present a two-pronged strategy to tackle this issue. The first step in improving sensitivity is to modify FBGs, and the second is to use signal processing methods to recover minor wavelength shifts. A frequency-selective detection technique can be used to measure sub-pm wavelength shifts for small modulated pressure signals. This technique was used to establish a test bench for measuring the pressure sensitivity of standard acrylate and polyimide coated FBGs as well as to confirm a linear relationship between the pressure range of interest and Bragg wavelength shift.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120958990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniele Orsuti, Sterenn Guerrier, L. Palmieri, É. Awwad, C. Dorize, C. Antonelli, A. Mecozzi
From Distributed Acoustic Sensing (DAS) measurements over deployed Multi-Core Fiber (MCF), we discuss several signal processing options to enhance the sensing sensitivity, namely core combination and longitudinal averaging.
{"title":"Coherent combination method applied to distributed acoustic sensing over deployed multicore fiber","authors":"Daniele Orsuti, Sterenn Guerrier, L. Palmieri, É. Awwad, C. Dorize, C. Antonelli, A. Mecozzi","doi":"10.1117/12.2678315","DOIUrl":"https://doi.org/10.1117/12.2678315","url":null,"abstract":"From Distributed Acoustic Sensing (DAS) measurements over deployed Multi-Core Fiber (MCF), we discuss several signal processing options to enhance the sensing sensitivity, namely core combination and longitudinal averaging.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123432358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The backscattering process in hollow core fibres shows a large similarity with Rayleigh scattering, offering the potential to be exploited for distributed sensing. A classical Φ-OTDR implementation is used to observe the backscattering signal from the surface roughness at the silica-air interface in hollow-core photonic bandgap fibres. In contrast with standard single mode silica-core fibres, the hollow core photonic bandgap fibre shows a chaotic response when the temperature is slightly changed, but stable results under strictly constant temperature conditions. Another temperature-dependent effect is highly perturbing the coherent scattering response, and it is believed that higher-order guided modes cause detrimental interferences totally jamming the response. By using single-mode hollow core fibres it should be in principle possible to obtain the relevant temperature measurement pattern, though as anticipated the extreme weakness of the signal certainly represents an insurmountable challenge.
{"title":"Study on the possibility of Φ-OTDR sensing in hollow-core fibres","authors":"Yuting Yang, Malak Galal, L. Thévenaz","doi":"10.1117/12.2679743","DOIUrl":"https://doi.org/10.1117/12.2679743","url":null,"abstract":"The backscattering process in hollow core fibres shows a large similarity with Rayleigh scattering, offering the potential to be exploited for distributed sensing. A classical Φ-OTDR implementation is used to observe the backscattering signal from the surface roughness at the silica-air interface in hollow-core photonic bandgap fibres. In contrast with standard single mode silica-core fibres, the hollow core photonic bandgap fibre shows a chaotic response when the temperature is slightly changed, but stable results under strictly constant temperature conditions. Another temperature-dependent effect is highly perturbing the coherent scattering response, and it is believed that higher-order guided modes cause detrimental interferences totally jamming the response. By using single-mode hollow core fibres it should be in principle possible to obtain the relevant temperature measurement pattern, though as anticipated the extreme weakness of the signal certainly represents an insurmountable challenge.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123013921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ITER is a tokamak-based fusion device where the knowledge of plasma current is crucial for its safe and successful operation. A polarimetric optical fibre sensor, installed around a section of the ITER Vacuum Vessel (VV), can provide a measure of the plasma current, by exploiting the Faraday effect-induced state of polarization (SOP) rotation of the light launched into the sensing fibre. In the system discussed here, spun fibre is used as the sensing fibre and a polarization-sensitive reflectometer (PSR) is used as the interrogator. In this paper, we analyse the impact of the ITER VV wall ambient temperature on the sensor’s plasma current measurement accuracy, when the other inevitable perturbation effects, namely fibre bending, and twisting are also considered. As ITER is not yet operational and there is no practical way of imitating the ITER operating conditions, we resort to the Jones formalism-based simulation approach to estimate the minimum required LB/ SP ratio of the spun sensing fibre that satisfies the ITER plasma current measurement specifications, under the considered perturbation effects.
{"title":"Polarization-sensitive reflectometry-based plasma current measurement in ITER: influence of operating temperature","authors":"P. Dandu, A. Gusarov, M. Wuilpart","doi":"10.1117/12.2677343","DOIUrl":"https://doi.org/10.1117/12.2677343","url":null,"abstract":"ITER is a tokamak-based fusion device where the knowledge of plasma current is crucial for its safe and successful operation. A polarimetric optical fibre sensor, installed around a section of the ITER Vacuum Vessel (VV), can provide a measure of the plasma current, by exploiting the Faraday effect-induced state of polarization (SOP) rotation of the light launched into the sensing fibre. In the system discussed here, spun fibre is used as the sensing fibre and a polarization-sensitive reflectometer (PSR) is used as the interrogator. In this paper, we analyse the impact of the ITER VV wall ambient temperature on the sensor’s plasma current measurement accuracy, when the other inevitable perturbation effects, namely fibre bending, and twisting are also considered. As ITER is not yet operational and there is no practical way of imitating the ITER operating conditions, we resort to the Jones formalism-based simulation approach to estimate the minimum required LB/ SP ratio of the spun sensing fibre that satisfies the ITER plasma current measurement specifications, under the considered perturbation effects.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Chah, A. Wróblewska, J. Sitek, Hadrien Fasseau, Tianbo Zhu, I. Pasternak, C. Caucheteur
Graphene oxide (GO) thin films fabricated by the vacuum filtration method were deposited on bare tilted fiber Bragg grating for refractometry measurements. Two different layer thicknesses (100 nm and 200nm) were used to prepare the samples. The amplitude spectra of the GO-coated TFBGs (GO-TFBGs) were measured with linearly polarized light for different refractive index values of LiCl solutions (1.3333-1.3342). We show that when polarized light is used, the 200 nm GO-TFBGs achieve similar behavior as plasmonic gold-coated TFBGs (Au-TFBGs). This latter exhibits a characteristic attenuation in the amplitude spectrum when P-polarized light excites a surface plasmon resonance (SPR). This behavior suggests that GO is present as a mix of discontinuous and stratified flakes favorable for plasmon-plasmon hybridization, which can be generated for both P and/or S-polarization of the light.
{"title":"Polarization dependent properties of graphene oxide-coated tilted fiber Bragg gratings for refractometry","authors":"K. Chah, A. Wróblewska, J. Sitek, Hadrien Fasseau, Tianbo Zhu, I. Pasternak, C. Caucheteur","doi":"10.1117/12.2678523","DOIUrl":"https://doi.org/10.1117/12.2678523","url":null,"abstract":"Graphene oxide (GO) thin films fabricated by the vacuum filtration method were deposited on bare tilted fiber Bragg grating for refractometry measurements. Two different layer thicknesses (100 nm and 200nm) were used to prepare the samples. The amplitude spectra of the GO-coated TFBGs (GO-TFBGs) were measured with linearly polarized light for different refractive index values of LiCl solutions (1.3333-1.3342). We show that when polarized light is used, the 200 nm GO-TFBGs achieve similar behavior as plasmonic gold-coated TFBGs (Au-TFBGs). This latter exhibits a characteristic attenuation in the amplitude spectrum when P-polarized light excites a surface plasmon resonance (SPR). This behavior suggests that GO is present as a mix of discontinuous and stratified flakes favorable for plasmon-plasmon hybridization, which can be generated for both P and/or S-polarization of the light.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114585865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fiber distributed sensing based on Rayleigh, Brillouin or Raman backscattering is just over 40 years old. However, it took almost half of that time to transform physical concepts into measuring instruments and another 10 years to achieve permanent and reliable deployment in the field. Through this lengthy but classical process, Rayleigh, Brillouin and Raman became Distributed Acoustic Sensing (DAS), Distributed Temperature Sensing (DTS) or Distributed Strain Sensing (DSS), standards were written, and multiple software tools were developed to handle the ever-growing amount of measured data. In this paper, we first illustrate some of the fundamental steps required to go from the physics to the interrogators, in particular the importance of standardization with the associated common language and reference tests. Then we describe how to move from the interrogator to the field with the use of fully automated, reliable and self-diagnosed interrogators, including the needs for communication and data management. Eventually, we show how to obtain meaningful data from the field through recent deployment examples in the power cable industry, together with some of the typical software tools.
{"title":"From the physics to the field, using Rayleigh, Brillouin, and Raman fiber optic distributed sensing for condition and environment monitoring","authors":"E. Rochat, Alexandre Goy","doi":"10.1117/12.2678314","DOIUrl":"https://doi.org/10.1117/12.2678314","url":null,"abstract":"Fiber distributed sensing based on Rayleigh, Brillouin or Raman backscattering is just over 40 years old. However, it took almost half of that time to transform physical concepts into measuring instruments and another 10 years to achieve permanent and reliable deployment in the field. Through this lengthy but classical process, Rayleigh, Brillouin and Raman became Distributed Acoustic Sensing (DAS), Distributed Temperature Sensing (DTS) or Distributed Strain Sensing (DSS), standards were written, and multiple software tools were developed to handle the ever-growing amount of measured data. In this paper, we first illustrate some of the fundamental steps required to go from the physics to the interrogators, in particular the importance of standardization with the associated common language and reference tests. Then we describe how to move from the interrogator to the field with the use of fully automated, reliable and self-diagnosed interrogators, including the needs for communication and data management. Eventually, we show how to obtain meaningful data from the field through recent deployment examples in the power cable industry, together with some of the typical software tools.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"14 34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124743433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhecong Lin, P. Zhu, Jianlin Li, Liu Cao, Bo Xu, M. Soto
High-pressure resin transfer moulding is a novel process to manufacture composite materials, having the advantages of allowing fast moulding speed and strong part performance. One of the most significant difficulties of the process is that the flow of resin used inside a closed mould cannot be directly monitored. In this paper, a fibre Bragg grating (FBG) sensor is embedded into the glass fibre layers placed inside the mould with the purpose of monitoring the resin flow in the process. This is achieved by heating the mould and measuring how the cold resin flows through the mould using a series of FBG sensors. Results find out that the FBG peak wavelength sharply decreases when the resin reaches the position of the sensor, allowing the monitoring of the flow front through a closed mould. The method is validating comparing FBG measurements with camara recording to visualise the actual position of the fluid. Although FBG sensors respond to both temperature and strain changes, the sharp thermal impact can be easily detected, making unnecessary any temperature-strain discrimination.
{"title":"Monitoring high-pressure silicone oil flow using fibre Bragg gratings for fast manufacturing of composite materials","authors":"Zhecong Lin, P. Zhu, Jianlin Li, Liu Cao, Bo Xu, M. Soto","doi":"10.1117/12.2678174","DOIUrl":"https://doi.org/10.1117/12.2678174","url":null,"abstract":"High-pressure resin transfer moulding is a novel process to manufacture composite materials, having the advantages of allowing fast moulding speed and strong part performance. One of the most significant difficulties of the process is that the flow of resin used inside a closed mould cannot be directly monitored. In this paper, a fibre Bragg grating (FBG) sensor is embedded into the glass fibre layers placed inside the mould with the purpose of monitoring the resin flow in the process. This is achieved by heating the mould and measuring how the cold resin flows through the mould using a series of FBG sensors. Results find out that the FBG peak wavelength sharply decreases when the resin reaches the position of the sensor, allowing the monitoring of the flow front through a closed mould. The method is validating comparing FBG measurements with camara recording to visualise the actual position of the fluid. Although FBG sensors respond to both temperature and strain changes, the sharp thermal impact can be easily detected, making unnecessary any temperature-strain discrimination.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"12643 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129060190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
João P. Santos, Diana Pereira, J. Bierlich, J. Kobelke, M. Nascimento, M. Ferreira
A Fabry Perot (FP) based fiber sensor for multiparameter measurement is proposed. The sensor is constituted by a short section of a hollow square core fiber (HSCF) spliced between a single mode fiber and a long section of a silica capillary tube. In a reflection scheme, several FP cavities are enhanced in different areas of the HSCF. In a single 439 μm long sensing head, three FP cavities are excited. Using the Fourier band-pass filter method, each cavity was individually monitored towards variations of pressure, temperature, and curvature. The maximum sensitivities of (3.23 ± 0.04) nm/MPa, (9.6 ± 0.3) pm/°C, and (-32 ± 1) pm/m-1 were obtained for pressure, temperature, and curvature, respectively within a measurement range of 0.4 MPa, 110°C, and 9 m-1. The distinct responses of the FP cavities to the measurands allow for a triple-hybrid application of the sensor towards simultaneous measurement of pressure, temperature, and curvature. The proposed sensor is robust with simple fabrication and small dimensions, revealing promising to be employed in a wide range of applications where the measurement of several physical parameters is required.
{"title":"Multiparameter sensor based on hollow square core optical fiber","authors":"João P. Santos, Diana Pereira, J. Bierlich, J. Kobelke, M. Nascimento, M. Ferreira","doi":"10.1117/12.2678539","DOIUrl":"https://doi.org/10.1117/12.2678539","url":null,"abstract":"A Fabry Perot (FP) based fiber sensor for multiparameter measurement is proposed. The sensor is constituted by a short section of a hollow square core fiber (HSCF) spliced between a single mode fiber and a long section of a silica capillary tube. In a reflection scheme, several FP cavities are enhanced in different areas of the HSCF. In a single 439 μm long sensing head, three FP cavities are excited. Using the Fourier band-pass filter method, each cavity was individually monitored towards variations of pressure, temperature, and curvature. The maximum sensitivities of (3.23 ± 0.04) nm/MPa, (9.6 ± 0.3) pm/°C, and (-32 ± 1) pm/m-1 were obtained for pressure, temperature, and curvature, respectively within a measurement range of 0.4 MPa, 110°C, and 9 m-1. The distinct responses of the FP cavities to the measurands allow for a triple-hybrid application of the sensor towards simultaneous measurement of pressure, temperature, and curvature. The proposed sensor is robust with simple fabrication and small dimensions, revealing promising to be employed in a wide range of applications where the measurement of several physical parameters is required.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126244545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Neves, Manuel Soeiro, Mariana Santos, J. Rodrigues, Mauricio M Carvalho, P. Petagna
This paper presents the design, cost optimization and performance analysis of a distributed humidity and temperature fibre optic sensor for environmental monitoring. The sensor utilises a 1-metre spatial resolution phasesensitive Optical Time Domain Reflectometry (OTDR) interrogator and employs a pair of fibre optic cables as sensing elements. One cable is coated with polyimide for humidity sensing and the other is coated with acrylic for temperature sensing. The sensor is designed to be reliable, accurate and cost-effective, enabling its use in various industrial environments. New software was developed for fast data acquisition and processing, and the hardware was assembled to allow measurements to be taken at thousands of different locations over the same fibre optic. The cost of the current version and the acquisition time have been reduced by half compared to the reference version. The sensor’s performance was evaluated in both a controlled laboratory environment and in a real-world deployment. The results indicate that the sensor effectively measures relative humidity (RH) and temperature across a broad range of conditions while preserving the precision of the previous version. Additionally, it utilizes cost-effective hardware and has a significantly faster response time.
{"title":"Optimising the design, cost, and performance of a distributed humidity and temperature fibre sensor","authors":"T. Neves, Manuel Soeiro, Mariana Santos, J. Rodrigues, Mauricio M Carvalho, P. Petagna","doi":"10.1117/12.2678659","DOIUrl":"https://doi.org/10.1117/12.2678659","url":null,"abstract":"This paper presents the design, cost optimization and performance analysis of a distributed humidity and temperature fibre optic sensor for environmental monitoring. The sensor utilises a 1-metre spatial resolution phasesensitive Optical Time Domain Reflectometry (OTDR) interrogator and employs a pair of fibre optic cables as sensing elements. One cable is coated with polyimide for humidity sensing and the other is coated with acrylic for temperature sensing. The sensor is designed to be reliable, accurate and cost-effective, enabling its use in various industrial environments. New software was developed for fast data acquisition and processing, and the hardware was assembled to allow measurements to be taken at thousands of different locations over the same fibre optic. The cost of the current version and the acquisition time have been reduced by half compared to the reference version. The sensor’s performance was evaluated in both a controlled laboratory environment and in a real-world deployment. The results indicate that the sensor effectively measures relative humidity (RH) and temperature across a broad range of conditions while preserving the precision of the previous version. Additionally, it utilizes cost-effective hardware and has a significantly faster response time.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131424616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniel Maldonado-Hurtado, J. Madrigal, Rocío Ruiz, A. Crespo, Inmaculada Riog, S. Sales
Composites have added new dimensions to the design and fabrication of various structures. These structures are usually used to withstand hefty loads, so their integrity must be guaranteed. Due to optical sensors' advantages and FBGs' unique position among optical fibre sensors, we propose in this paper the integration of FBG sensors for the monitorisation of the curing temperature and strain of multidirectional carbon-reinforced polymer cured by microwave radiation heating method and for strain monitoring of a fibre reinforced polymer pultrusion beam.
{"title":"Fibre Bragg gratings for fibre reinforced polymer monitorization","authors":"Daniel Maldonado-Hurtado, J. Madrigal, Rocío Ruiz, A. Crespo, Inmaculada Riog, S. Sales","doi":"10.1117/12.2678316","DOIUrl":"https://doi.org/10.1117/12.2678316","url":null,"abstract":"Composites have added new dimensions to the design and fabrication of various structures. These structures are usually used to withstand hefty loads, so their integrity must be guaranteed. Due to optical sensors' advantages and FBGs' unique position among optical fibre sensors, we propose in this paper the integration of FBG sensors for the monitorisation of the curing temperature and strain of multidirectional carbon-reinforced polymer cured by microwave radiation heating method and for strain monitoring of a fibre reinforced polymer pultrusion beam.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133995842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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