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Characteristics of Smart Concrete with Fiber Optical Bragg Grating Sensor
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作者 信思金 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2004年第2期82-84,共3页
Based on the advantages of the fiber Bragg grating sensing technology,this paper presents a principle of a novel smart concrete with fiber optical Bragg grating sensor,analyses the theory and characteristics,illustrat... Based on the advantages of the fiber Bragg grating sensing technology,this paper presents a principle of a novel smart concrete with fiber optical Bragg grating sensor,analyses the theory and characteristics,illustrates the key technology and method to make the fiber Bragg grating sensor for the smart concrete,and proves the feasibility with experiments.The results indicate that the smart concrete with fiber Bragg grating sensors is feasible in the structure monitoring and damage diagnosing in the long run. 展开更多
关键词 smart concrete fiber optical bragg grating sensor intelligent materials
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Optical Properties of High Sensitivity Fiber Bragg Grating on Temperature Sensor
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作者 Li Wang Shiya He Department of Applied Physics, Beijing University of Technology, Beijing 100022, China 《光学学报》 EI CAS CSCD 北大核心 2003年第S1期843-844,共2页
In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the s... In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the spectral properties of uniform Bragg grating is analyzed by using coupling mode theory which is optical properties of high sensitivity fiber Bragg grating on temperature sensor in accordance with experiment. 展开更多
关键词 of in BE ET for FBG optical Properties of High Sensitivity fiber bragg grating on Temperature sensor on
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Field measurement of strain response for typical asphalt pavement 被引量:6
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作者 PAN Qin-xue ZHENG Ce-ce +5 位作者 Lü Song-tao QIAN Guo-ping ZHANG Jun-hui WEN Pi-hua MILKOS Borges Cabrera ZHOU Huai-de 《Journal of Central South University》 SCIE EI CAS CSCD 2021年第2期618-632,共15页
In order to reveal the changing law of the mechanical response of asphalt pavements under the action of vehicle load and provide references for the design of durable pavements,three typical asphalt pavement structures... In order to reveal the changing law of the mechanical response of asphalt pavements under the action of vehicle load and provide references for the design of durable pavements,three typical asphalt pavement structures with flexible base(S1),combined base(S2),and semi-rigid base(S3)were selected to perform field strain tests under static and dynamic load using the fiber Bragg grating optical sensing technology.The changing characteristics of the strain field along the horizontal and depth directions of pavements were analyzed.The results indicate that the most unfavorable asphalt pavement layers were the upper-middle surface layer and the lower base layer.In addition,the most unfavorable loading positions on the surface layer and the base layer were the center of wheel load and the gap center between two wheels,respectively.The most unfavorable layer of the surface layers gradually moved from the lower layer to the upper layer with the increase of base layer modulus.The power function relationships between structural layer strain and vehicle speed were revealed.The semi-rigid base asphalt pavement was the most durable pavement type,since its strain value was lower compared to those of the other structures. 展开更多
关键词 asphalt pavement strain duration curve load position vehicle speed fiber bragg grating optical sensors
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Broken Wires Diagnosis Method Numerical Simulation Based on Smart Cable Structure 被引量:1
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作者 Sheng LI Min ZHOU Yan YANG 《Photonic Sensors》 SCIE EI CAS 2014年第4期366-372,共7页
The smart cable with embedded distributed fiber optical Bragg grating (FBG) sensors was chosen as the object to study a new diagnosis method about broken wires of the bridge cable. The diagnosis strategy based on ca... The smart cable with embedded distributed fiber optical Bragg grating (FBG) sensors was chosen as the object to study a new diagnosis method about broken wires of the bridge cable. The diagnosis strategy based on cable force and stress distribution state of steel wires was put forward. By establishing the bridge-cable and cable-steel wires model, the broken wires sample database was simulated numerically. A method of the characterization cable state pattern which can both represent the degree and location of broken wires inside a cable was put forward. The training and predicting results of the sample database by the back propagation (BP) neural network showed that the proposed broken wires diagnosis method was feasible and expanded the broken wires diagnosis research area by using the smart cable which was used to be only representing cable force. 展开更多
关键词 fiber optical bragg grating sensor bridge cable broken wires diagnosis smart cable BP neuralnetwork
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