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检索条件"任意字段=3rd Conference on Distributed and Multiplexed Fiber Optic Sensors"

共 106 条记录，以下是1-10 订阅

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Research progress based on FBG burst pressure detection 3

Research progress based on FBG burst pressure detection

引用

3rd International conference on Frontiers of Electronics, Information and Computation Technologies, ICFEICT 2023

作者： Wang, Kexuan Dong, Xiaoyu Li, Xinyu Cheng, Junxia Wang, Jia Wu, Shenjiang Shaan Xi Applied Physics and Chemistry Research Institute Xi'an China Xi'An Technological University School of Optoelectronic Engineering Xi'an China

ISBN: (纸本)9798350302356

Due to its advantages in sensitivity, insulation, corrosion resistance and distributed measurement, optical fiber grating pressure sensors have been gradually paid attention to in the fields of energy, chemical industry, aerospace and civil engineering. This paper firstly introduces the principle of fiber optic grating sensor, then some research hotspots of fiber grating sensors are reviewed, emphasize on the application and research of FBG sensor in boom pressure measurement, and finally summarizes the difficulties and technical development direction. © 2023 IEEE.

关键词： Pressure sensors

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Field Implementation of fiber Cable Monitoring for Mesh Networks with Optimized Multi-Channel Sensor Placement

Field Implementation of Fiber Cable Monitoring for Mesh Netw...

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optical fiber Communications conference and Exhibition (OFC)

作者： Ji, Philip N. Ye, Zilong Wellbrock, Glenn Xia, Tiejun Huang, Ming-Fang Aono, Yoshiaki Wang, Ting NEC Labs Amer 4 Independence Way Princeton NJ 08540 USA Calif State Univ Los Angeles 5151 State Univ Dr Los Angeles CA 90032 USA Verizon Corp 1201 E Arapaho Rd Richardson TX 75081 USA NEC Corp Ltd Transport Network Dept Abiko Chiba Japan

We develop a heuristic solution to effectively optimize the placement of multi-channel distributed fiber optic sensors in mesh optical fiber cable networks. The solution has been implemented in a field network to prov... 详细信息

ISBN: (纸本)9798350377583

关键词： fiber networks fiber optic sensors Network topology optical fibers optical networks Sensor networks

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Pipeline damage detection using multimode fiber optic acoustic sensor and ultrasonic guidedwaves 3

Pipeline damage detection using multimode fiber optic acoust...

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conference on optical Waveguide and Laser sensors III

作者： Naeem, Khurram Zhang, Pengdi Sarcinelli, Enrico Karki, Dolendra Khanikar, Tulika Su, Yang-Duan Lalam, Nageswara Wright, Ruishu Ohodnicki, Paul Univ Pittsburgh Mech Engn & Mat Sci Pittsburgh PA 15260 USA Natl Energy Technol Lab 626 Cochrans Mill Rd Pittsburgh PA USA Leidos Res Support Team 626 Cochrans Mill Rd Pittsburgh PA USA Univ Pittsburgh Elect & Comp Engn Pittsburgh PA USA

ISBN: (纸本)9781510674073;9781510674066

Structural Health Monitoring (SHM) of pipelines using nondestructive testing/evaluation (NDT/E) techniques is important particularly for the energy industries and for the oil/gas distribution which helps reduction in maintenance costs as well as increased service lifespan. Among various NDE techniques, ultrasonic guidedwaves (GWs) technique is popular for inspection and monitoring of pipes due to its advantages e.g., long-distance monitoring using a fixed sensor probe, full volumetric coverage, and inspection for invisible or inaccessible structure. Recently, performance and scope of the GWs method is explored using optical fiber sensing technology such as fiber Bragg gratings are demonstrated for many ultrasonic sensing applications. The optical fiber sensors bring the advantage of remote sensing, large acoustic bandwidth, and multiplexing capability of the sensors to extend the range of GWs based NDE method. This work describes the health monitoring of damaged pipeline structure in a nondestructive manner using alternative No-core fiber (NCF) based quasi-distributed fiber-optic acoustic sensor combined with ultrasonic GWs excitation. We set up two similar 6-inch carbon-steel pipes (16-ft long), one consists of various defects and the other is healthy without any defect for reference. The pipes are actively excited by employing different ultrasonic sources;(1) magnetostrictive collar (MR) to generate the axisymmetric (torsion) GWs and (2) conventional piezoelectric patches to generate the antisymmetric flexural waves on the exterior surface, and the characteristics of acoustic-ultrasonic signals are studied using NCF based multiplexed fiber-optic sensor. fiber optic sensor is an inline multimode interferometer made by sandwiching a piece of NCF (similar to 5cm) between the single mode fibers. The NCF sensor is remotely bonded at 45 degrees w.r.t pipe axis on one end and has an ultrasonic sensing range of > 600 kHz. Finally, the measured acousto-ultrasonic signals f

关键词： Pipeline monitoring No-core fiber structural health monitoring NDE ultrasonic acoustic sensing

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Research on a linear fiber optical sensor used for leakage detection of aircraft duct 3

Research on a linear fiber optical sensor used for leakage d...

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3rd International conference on Electronic Information Engineering and Data Processing, EIEDP 2024

作者： Zeng, Chuan Tong, Xinglin Zhang, Cui Li, Zekai Huang, Wenzhong Shi, Xuefeng School of Mechanical and Electrical Engineering Wuhan University of Technolog China National Engineering Research Center of Fiber Optic Sensing Technology and Networks Wuhan University of Technology China School of Information Engineering Wuhan University of Technology Hubei Wuhan430070 China

ISBN: (纸本)9781510680531

In view of the technical bottlenecks of eutectic salt electric superheat detector used in aircraft duct leakage monitoring, such as poor electromagnetic compatibility, low measurement accuracy and slow response time, a linear fiber optical sensor for aircraft duct leakage detection is studied in this paper. The research demonstrates that the sensor is capable of adapting to the operational conditions of pipeline bending assembly, with a temperature sensing accuracy of 0.1m, positioning accuracy of 1m, temperature measurement accuracy within ±3℃, and a working temperature range from 0-180℃. Moreover, it can replace the eutectic salt leak detection sensors to achieve remote distributed measurement. © 2024 SPIE.

关键词： Temperature measurement

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Research on distributed network information security diagnosis method based on matrix algorithm 3

Research on distributed network information security diagnos...

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3rd International conference on Advanced Algorithms and Signal Image Processing, AASIP 2023

作者： Zhang, Dehong Teachers' College of Jimei University Xiamen361021 China

ISBN: (纸本)9781510668522

In order to solve the problem of misdetection and time-consuming during the data acquisition of the honeycomb optical fiber sensor network, this paper proposes a security information retrieval to acquire the honeycomb optical fiber sensor network method based on fuzzy configuration. Those. A data storage model for a honeycomb fiber optic sensor network is developed. Fuzzy distribution detection is used to optimize the frequency decomposition and decomposition of decision time distributions. A block fuzzy fusion clustering method is used to test group properties and fuzzy data groups, and combined with network region clustering analysis method to discover security information. According to the experiment, the detection performance of the proposed model is more than 92, the accuracy is more than 92. 2, and the longest time is less than 0. 02 seconds, which shows that the detection is improved, accurate and effective. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： fiber optic sensors

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Feature Extraction for Pipeline Defects Inspection Based Upon distributed Acoustic fiber optic Sensing Data 18

Feature Extraction for Pipeline Defects Inspection Based Upo...

引用

conference on fiber optic sensors and Applications XVIII Part of SPIE Defense and Commercial Sensing conference

作者： Zhang, Pengdi Venketeswaran, Abhishek Wright, Ruishu F. Denslow, Kayte Babaee, Hessam Ohodnicki, Paul R., Jr. Univ Pittsburgh 3700 OHara St Pittsburgh PA 15261 USA Natl Energy Technol Lab 626 Cochrans Mill Rd Pittsburgh PA 15236 USA Pacific Northwest Natl Lab 902 Battelle Blvd Richland WA 99354 USA

ISBN: (纸本)9781510650879;9781510650862

fiber-optic distributed acoustic sensing (DAS) is becoming an increasingly important tool for real-time monitoring of energy and civil infrastructure structural health such as pipelines. We present a systematic theoretical study of the potential for DAS to be directly coupled with guided ultrasonic waves typically used in conventional acoustic non-destructive evaluation (NDE) methods for real-time pipeline health monitoring. We are referring to this innovative new NDE technique as ultrasonic guided wave and optical fiber sensor fusion. In the practical application of DAS coupled with guided ultrasonic waves, the structural design of (1) the specific guided waves excited, (2) the physical installation of the acoustic transducers and the fiber optic sensors, and (3) the functional performance specifications (gauge length, sensitivity, Etc.) of fiber optic DAS have an important influence on overall capabilities of the monitoring system. Meanwhile, physics-based analysis of acoustic waves is still a challenge due to the complex nature of the Lamb wave when it propagates, scatters, and disperses in the presence of structural defects. In this work, we simulate carbon steel pipes relevant for oil and gas pipeline applications with diameters of approximately 6-12" and wall thickness of 0.5" as the objects to be monitored. By establishing and implementing these capabilities, we seek to pursue an in-depth study on structural parameter optimization of DAS network, measurement range, and signal processing with an ultimate goal of increasing the sensitivity and efficacy of DAS to defect identification for various modes of corrosion expected in practice. To study the characteristics of scattered acoustic waves and performance of DAS for defect identification, we simulated the response of DAS for multiple pipe structures, defect types, and DAS sensor network configuration using finite element software Ansys, then the properties of signal response are extracted to construct defect-

关键词： Corrosion Waveguides Acoustics fiber optics sensors Wave propagation Finite element methods Ultrasonics Nondestructive evaluation Feature extraction Signal detection

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optical sensors, sensors 2022

Optical Sensors, Sensors 2022

引用

optical sensors, sensors 2022

ISBN: (纸本)9781557528209

The proceedings contain 63 papers. The topics discussed include: multiplexed COVID-19 antibody quantification from human sera using label-free nanoplasmonic biosensors;plasmonic sensors for pathogen detection;integration of diagnostic fiber Bragg grating sensors in advanced carbon composite materials;fiber Bragg grating optical fiber sensors application for strain monitorization in pultruded smart FRP beams;a microturbine flow sensor created on an optical fiber tip using multiphoton nanomachining process;in-core temperature forecasting by random forest modeling in extreme harsh environment;fiber-optic Fabry-Perot water penetration sensors using mt optical connector and spacer;real-time 3D shape sensing with a random fiber Bragg grating triplet;and interrogation of 2000 draw tower gratings for quasi distributed sensing with coherent-correlation-OTDR.

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High sensitivity distributed pipelines infrastructure monitoring with internal deployed fibers and Rayleigh enhancement 2

High sensitivity distributed pipelines infrastructure monito...

引用

conference on optical Waveguide and Laser sensors II

作者： Naeem, Khurram Lalam, Nageswara Karki, Dolendra Khanikar, Tulika Wright, Ruishu Gillooly, Andy Weisenberg, Kent Lu, Ping Westbrook, Paul S. Ohodnicki, Paul Univ Pittsburgh Dept Mech Eng & Mat Sci Pittsburgh PA 15261 USA NETL 626 Cochrans Mill Rd Pittsburgh PA 15236 USA NETL Support Contractor 626 Cochrans Mill Rd Pittsburgh PA 15236 USA Fibercore Southampton Sci Pk Southampton SO16 7QQ Hants England Pipeline Innervat LLC Pittsburgh PA USA BrainDrip LLC Jacksonville FL 32256 USA OFS Fitel Avon CT USA OFS Labs Somerset NJ USA Univ Pittsburgh Dept Elect & Comp Eng Pittsburgh PA USA

ISBN: (数字)9781510661790

ISBN: (纸本)9781510661783;9781510661790

Pipeline infrastructure monitoring based on distributed fiber-optic acoustic sensing is gaining significant attention aimed at real-time rapid detection of leakages, third-party intrusion, geo-hazards, corrosion, and other structural damages. Typical fibers installations are external to a pipeline, however retrofitting of existing pipelines through internal installation is desirable despite deployment challenges. Highly sensitive distributed acoustic sensing integrated within new pipelines or retrofit in existing pipelines can enable early detection of damage and degradation. In this work, we demonstrate pipeline integrity monitoring using distributed acoustic sensing and the Rayleigh backscattering-enhanced optical fibers deployed internal to the pipeline for high sensitivity detection of acoustic events. More specifically, traditional and backscattering-enhanced optical fibers are interrogated using bench-top phase-sensitive optical time-domain reflectometry (F-OTDR). The distributed acoustic sensing characteristics of two types of backscattered-enhanced fibers, Type A and Type B, are experimentally investigated. Our measurement analysis shows that the SNR of the acoustic event detection enhances similar to 2-fold and similar to 3-fold using the Type A and Type B fiber, respectively than that of the traditional SMF for pipeline monitoring. The presented investigation is a first validation for in-pipe deployed distributed acoustic sensing with high SNR and provides useful insight for diverse pipeline monitoring applications in the oil and gas distribution industry.

关键词： Pipeline monitoring structural health monitoring Rayleigh-enhanced optical fibers distributed acoustic sensing

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Study of fiber optic Sensing Monitoring on Ultra-High Performance Concrete Considering Shear-lag Correction

Study of Fiber Optic Sensing Monitoring on Ultra-High Perfor...

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Intelligent Manufacturing, Advanced Sensing and Big Data (IMASBD), International conference on

作者： Zehong Fu Han Song Junyong Liu Wuhan University of Technology Wuhan China

ISBN: (数字)9798331524456

ISBN: (纸本)9798331524463

The strain transfer correction model is proposed for the surface-adhesive tubular fiber sensor on Ultra-High Performance Concrete (UHPC). The adhesive layer shear stress is assumed to be quadratically distributed and displacement averaging method is used, and the effect of internal shear stress in the structural body is also considered, so that the corrective model proposed in this paper has an error of no more than 1% in the numerical calculations and finite element simulation results. The tensile test experiments were completed on the UHPC, and the strain transfer coefficients are 0.919, 0.911, and 0.913, with an average value of 0.914, which was more consistent with the theoretical result of 0.95, with an error of 3.79%. The linearity of fiber sensor in the three repeated experiments is good, the repeatability error is small, the R 2 is above 0.99, and the hysteresis error is 3.33%.

关键词： optical fiber sensors Simulation Linearity sensors Numerical models optical fiber testing Stress Hysteresis Strain optical surface waves

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Methods for microwave characterization of electro-optic crystals for quantum transduction 3

Methods for microwave characterization of electro-optic crys...

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3rd IEEE International conference on Quantum Computing and Engineering (QCE)

作者： Zorzetti, Silvia Wang, Changqing Gonin, Ivan V. Kazakov, Sergey Nekrashevich, Ivan Yakovlev, Vyacheslav P. Fermilab Natl Accelerator Lab POB 500 Batavia IL 60510 USA

ISBN: (数字)9781665491136

ISBN: (纸本)9781665491136

Microwave-optic quantum transducers are essential devices to develop distributed quantum networks and implement related quantum communication protocols. Three dimensional high-coherence time microwave cavities embedded with electrooptic nonlinear dielectric materials provide promising platforms to boost the efficiency of the microwave-optic frequency conversion. However, so far, the properties for such dielectric crystals operating at milli-Kelvin cryogenic temperatures have not been well understood. Here, we propose a scheme to precisely measure and benchmark the dielectric constant and analyze the dissipation mechanisms of electro-optic materials, such as Lithium Niobate, at the quantum threshold. We will use Fermilab's three dimensional superconducting cavities with long coherence time. The proposed method of microwave characterization lays the foundations for engineering quantum transduction devices and quantum sensors with high conversion efficiency and fidelity.

关键词： Quantum Transduction Qubit Coherence Quantum networks TLS Superconductivity Quantum sensors

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