European Workshop on Optical Fibre Sensors最新文献_第7页

Estimation of sealing performance with quasi-distributed strain sensing in spiral wound gaskets 基于准分布应变传感的螺旋缠绕垫片密封性能评估

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2679689

Ben Cloostermans, T. Baghdasaryan, D. Pronk, Björn Bruckenburg, F. Berghmans

{"title":"Estimation of sealing performance with quasi-distributed strain sensing in spiral wound gaskets","authors":"Ben Cloostermans, T. Baghdasaryan, D. Pronk, Björn Bruckenburg, F. Berghmans","doi":"10.1117/12.2679689","DOIUrl":"https://doi.org/10.1117/12.2679689","url":null,"abstract":"Modern process industry, particularly (petro)chemical industry faces, many challenges pertaining to sustainability. In this respect, more stringent regulations on reducing emissions are motivating plant and process owners to implement condition monitoring and predictive maintenance strategies. Bolted flange connections equipped with sealing gaskets, for example, can be a significant source of emissions and their performance remains often ambiguous under modern standards. Gasket stress is a key performance indicator of a bolted flange connection, which is typically approximated using methods that rely on many simplifications and assumptions. This study investigates the potential of using fiber-optic sensors, more specifically fiber Bragg gratings, as strain sensors to estimate gasket stress in bolted flange connections with gaskets. To the best of our knowledge, it is the first time that said gaskets are instrumented with fiber Bragg gratings. For our experiments, we submit these gaskets to relevant mechanical loads, both in a laboratory setting and in a realistic industrial environment. We analyze the relation between the fiber Bragg grating response and the applied mechanical load to define transfer functions that allow estimating the gasket stress and hence the sealing performance of the flange connection.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"18 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":"116967744","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}

引用次数: 0

Plasmonic plastic optical fiber chips combined with artificial intelligence to identify water or alcoholic solutions 等离子体塑料光纤芯片结合人工智能识别水或酒精溶液

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2680771

F. Arcadio, Fiore Capasso, Chiara Marzano, L. Zeni, N. Cennamo

引用次数: 0

Distributed measurement of modal birefringence in a few-mode fiber based on stimulated Brillouin scattering 基于受激布里渊散射的少模光纤模态双折射分布测量

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678089

E. Catalano, R. Vallifuoco, L. Zeni, A. Minardo

{"title":"Distributed measurement of modal birefringence in a few-mode fiber based on stimulated Brillouin scattering","authors":"E. Catalano, R. Vallifuoco, L. Zeni, A. Minardo","doi":"10.1117/12.2678089","DOIUrl":"https://doi.org/10.1117/12.2678089","url":null,"abstract":"This paper presents a novel technique for the distributed measurement of the modal birefringence in a few-mode fiber (FMF). The method exploits two different phenomena observed in distributed Brillouin measurements: the dependence of the Brillouin frequency shift (BFS) on the effective refractive index (ERI) of the interacting optical beams, and the spatial oscillations of the Brillouin gain deriving from multimodal interference. Using both phenomena, a wide range of ERI separations can be measured, from ≈ 10-7 to 10-2 or more. The measurements have been carried out over a two-mode graded-index FMF, using two photonic lanterns to selectively excite the desired spatial modes. We use the BFS measurements to derive the ERI difference between the LP01 and LP11 mode groups, while the spatial oscillations of the Brillouin gain reveal the birefringence between the vector components (TE01, TM01 and HE21) of the LP11 mode group. The experimental measurements are partly supported by full-vector finite-element-method (FEM) simulations. The reported method may also find application in the field of distributed sensing, by taking advantage of the dependence of modal birefringence from physical parameters such as strain and temperature.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"17 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":"123268686","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}

引用次数: 0

Fiber signature-domain multiplexing for high-speed shape sensing 用于高速形状传感的光纤特征域复用

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678899

Martina Cappelletti, A. Aitkulov, Daniele Orsuti, L. Schenato, M. Santagiustina, M. Magarotto, C. Antonelli, A. Galtarossa, A. Mecozzi, T. Hayashi, L. Palmieri

引用次数: 0

Nonlinear amplification in φ-OTDR for distributed acoustic sensing 用于分布式声传感的φ-OTDR非线性放大

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2679397

L. Rossi, L. Cheng, W. de Jong, R. Jansen, G. Bolognini

引用次数: 0

Refractory lining health monitoring based on Raman optical time domain reflectometry 基于拉曼光时域反射法的耐火材料衬里健康监测

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2679296

M. Lindblom, Maximilian Patzauer, K. Hey Tow, Å. Claesson, Oscar Fogelberg, Toste Jonsäter, M. Warne

引用次数: 0

Response of long period gratings written in B/Ge and P-doped optical fibers to gamma radiation B/Ge和p掺杂光纤长周期光栅对γ辐射的响应

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678163

F. Esposito, A. Stăncălie, A. Srivastava, M. Śmietana, J. Mrázek, R. Mihalcea, C. Neguț, S. Campopiano, A. Iadicicco

{"title":"Response of long period gratings written in B/Ge and P-doped optical fibers to gamma radiation","authors":"F. Esposito, A. Stăncălie, A. Srivastava, M. Śmietana, J. Mrázek, R. Mihalcea, C. Neguț, S. Campopiano, A. Iadicicco","doi":"10.1117/12.2678163","DOIUrl":"https://doi.org/10.1117/12.2678163","url":null,"abstract":"The investigation of impact of ionizing radiation on photonic waveguides and devices is of a large interest due to new demanding applications in harsh environments, such as space or high-energy-physics experiments and more. Thus, the effects of gamma radiation on refractive index inducing propagation loss different optical fibers are investigated by means of several approaches including fiber Bragg gratings and long period gratings (LPG). In this work, we report the results on exposure to gamma irradiation up to tens of kGy of LPGs written in single-mode optical fibers with unconventional dopants, such as B and P. The LPGs in a reflective configuration have been written using the electric arc discharge technique. The attention is focused on the real-time measurement of LPG resonance, i.e., wavelength shift and transmission power changes during irradiation, as well as the recovery effects after the irradiation. It has been found that the impact of gamma is significantly dependent on the fiber type and the LPG properties. The LPGs in B/Ge co-doped fiber show both the higher resonant wavelength shift and low power losses. Such results are useful for those working with optical fibers and related sensors in environments exposed to radiations.","PeriodicalId":424244,"journal":{"name":"European Workshop on Optical Fibre Sensors","volume":"48 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":"130882979","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}

引用次数: 0

Shape sensing with a smart elastic textile band containing pre-strained FBG sensors 形状传感与智能弹性纺织带包含预应变光纤光栅传感器

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678400

Bastien Van Esbeen, D. Kinet, Corentin Guyot, A. Depré, Rik Knoppers, R. Nieuwland, C. Caucheteur

引用次数: 0

Dynamic sensing of large arrays of draw tower gratings using code division multiplexing 利用码分复用技术实现大型塔栅阵列的动态感知

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678082

M. Götten, J. Van Roosbroeck, E. Lindner, S. Lochmann, J. Vlekken

引用次数: 0

Monitoring mining induced seismicity using optical fibre sensors during mine exploitation 利用光纤传感器监测矿山开采过程中的采动地震活动

European Workshop on Optical Fibre Sensors Pub Date : 2023-05-23 DOI: 10.1117/12.2678296

K. Hey Tow, Joao Pereira, M. Lindblom, M. Fernández-Ruiz, H. Martins, M. Rossi, Siw Nilsson, Harald van den Berg

引用次数: 0