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Creep deformation measurement using quartz optical fiber

X.-Y.He's research works Southeast University (China

This paper describes an optical system for high temperature creep strain measurement using quartz optical fiber,super long working distance microscope and digital image processing techniques.X.-Y.He's research works Southeast University (China This paper describes an optical system for high temperature creep strain measurement using quartz optical fiber,super long working distance microscope and digital image processing techniques.Soil deformation measurement based on optic fiber sensor Jul 18,2007 Creep deformation measurement using quartz optical fiber#0183;Soil deformation measurement based on optic fiber sensor Soil deformation measurement based on optic fiber sensor Yang,Jun 2007-07-18 00:00:00 ABSTRACT A double-coating optical fiber sensor which is used for soil deformation measurement is proposed in the paper.It could be used in non-destructive detection of large scale structures,health evaluation of the civil

STP1323 Nontraditional Methods of Sensing Stress,Strain

Experimental Measurement of Strains using Digital Volume Correlation.Measurement of Stress Distributions on Silicon IC Chips Using Piezoresistive Sensors.Real-time Phase Analysis Methods for Analyzing Shape,Strain and Stress.Strain Gauges,Fiber Optic versus Electric.Long-Term Measurement of Local Creep Deformation by Optical Fiber Marking Residual stress measurement in carbon coatings of optical The residual stress measurement in carbon coatings of optical fibers is theoretically and experimentally investigated.A simple formula used to measure the residual stresses in the thin film deposited on a cylindrical substrate with the bending curvature is proposed.During a temperature drop,the carbon-coated optical fiber is bent due to the nonuniform deposition of coating materials.Related searches for Creep deformation measurement usincreep deformation examplescreep deformation in steelscreep deformation equationPrevious123456NextOptical gage for high-temperature strain measurement by Jun 13,2001 Creep deformation measurement using quartz optical fiber#0183;As the diameter of each quartz fiber is only 100 microns the fibers can be arrayed in a tiny area.The local strains were determined by measuring the variety of relative distance between two spots.The measurement results of local creep strain on the welding joints of 15CrMo and HK40 at 850 degrees C are obtained.

Related searches for Creep deformation measurement usin

creep deformation examplescreep deformation in steelscreep deformation equation12345NextAnalysis of nano-creep deformation of epoxy adhesive in Nov 01,2019 Creep deformation measurement using quartz optical fiber#0183;We describe a comprehensive analysis of the nano-creep deformation of an epoxy adhesive used in physical-contact optical fiber connectors.To design a highly reliable multicore fiber connector and predict the long-term reliability of commercially installed optical connectors,we focus on the change in fiber withdrawal,which is a key parameter for achieving physical-contact connection.Related searches for Creep deformation measurement usincreep deformation examplescreep deformation in steelscreep deformation equationQuartz Optical Fibers Products Suppliers Engineering360As the deformation in a small region can hardly be measured by conventional displacement gauge,a new technique for measuring long-term local creep deformation was developed by quartz optical fiber marking,remote monitoring and image processing.

Plastic deformation analysis in metal using absolute

An absolute displacement and strain measurement system has been used to characterize plastic deformation in metal specimens.Here,an absolute extrinsic Fabry-Perot interferometric (AEFPI) sensor system uses a modified EFPI sensor element head with support optical and electronic signal processing to give an output signal proportional to the instantaneous air gap length within the sensor element.Plastic deformation analysis in metal using absolute An absolute displacement and strain measurement system has been used to characterize plastic deformation in metal specimens.Here,an absolute extrinsic Fabry-Perot interferometric (AEFPI) sensor system uses a modified EFPI sensor element head with support optical and electronic signal processing to give an output signal proportional to the instantaneous air gap length within the sensor element.Pipeline deformation monitoring using distributed fiber Feb 01,2019 Creep deformation measurement using quartz optical fiber#0183;The Brillouin Optical Time Domain Analysis (BOTDA) is used to measure the strain data with the spatial resolution of 50 cm and sampling spacing of 10 cm.To apply the CBM and distributed Brillouin optical fiber sensor to measure the deformation of pipeline,the PVC pipeline was double clamped and loaded with several concentrated loads.

Optical gage for high-temperature strain measurement by

Jun 13,2001 Creep deformation measurement using quartz optical fiber#0183;As the diameter of each quartz fiber is only 100 microns the fibers can be arrayed in a tiny area.The local strains were determined by measuring the variety of relative distance between two spots.The measurement results of local creep strain on the welding joints of 15CrMo and HK40 at 850 degrees C are obtained.Non-Contact Creep Measurement Based on Fourier Domain A non-contact Fourier-domain optical coherence creep tomography (OCCT) is developed and employed in real-time non-contact creep measurement.Experiments on thermal deformation were carried out by using the self-developed OCCT to measure a high-temperature structure.In the OCCT system,a high-performance spectrometer,and a thermal light are,respectively,employed as the detector and the Non-Contact Creep Measurement Based on Fourier Domain A non-contact Fourier-domain optical coherence creep tomography (OCCT) is developed and employed in real-time non-contact creep measurement.Experiments on thermal deformation were carried out by using the self-developed OCCT to measure a high-temperature structure.In the OCCT system,a high-performance spectrometer,and a thermal light are,respectively,employed as the detector and the

Monitoring of concrete shrinkage and creep using Fiber

A.C.L.Wong,P.A.Childs,N.Gowripalan,G.D.Peng,2006,Monitoring of shrinkage and creep of concrete using fiber Bragg grating sensors,in 5 th International Conference on Optical Monitoring of concrete shrinkage and creep using Fiber A.C.L.Wong,P.A.Childs,N.Gowripalan,G.D.Peng,2006,Monitoring of shrinkage and creep of concrete using fiber Bragg grating sensors,in 5 th International Conference on Optical Measurement of the thermal expansion of space structures Jul 06,2010 Creep deformation measurement using quartz optical fiber#0183;A thermal deformation measurement system,composed of fiber Bragg grating (FBG) sensors for strain measurement and a displacement measuring interferometer (DMI) system for accurate specimen expansion data acquisition,was prepared and installed in a vacuum chamber where the temperature of the test specimen can be controlled to simulate space environments.

Measurement of creep of optical fiber by a low coherent

The creep properties of optical fiber used in fiber optical sensors were studied in this paper.A low coherent white light double interferometer system was designed and calibrated and the creep Measurement Science and Technology PAPER Relatedof high temperature deformation measurement using DIC method.Lu et al [7] determined the creep strain of 2.25% Cr 1% Mo steel specimens at 550 Creep deformation measurement using quartz optical fiber#176;C.Strycker et al [8] meas-ured the thermal expansion coefficient of tubular steel speci-mens up to 600 Creep deformation measurement using quartz optical fiber#176;C with digital image correlation techniques.Jacket effect on strain measurement accuracy for In this paper,based on the distributed optical fiber strain sensing technology of pulse-pre-pump Brillouin Optical Time Domain Analysis (PPP-BOTDA),the creep properties of two types of optical

Fiber alignment shifts of fiber-solder-ferrule joints in

The fiber alignment shifts of fiber-solder-ferrule (FSF) joints in butterfly laser module packaging under temperature cycle testing are studied experimentally and numerically.Using a novel image capture camera system as a monitor probe and the Sn-based solders as bonding materials,we have achieved the minimum fiber eccentric offsets of 8 and FIBER OPTIC DEFORMATION SENSORS FOR BRIDGESMore than 30 fiber optic sensors were installed in the deck [4].The chart presented in Creep deformation measurement using quartz optical fiber#227; shows the results obtained by 4 fiber optic deformation sensors during the first month after concreting.The thermal expansion phase is perceptible with an elongation value around 0,06 .FIBER OPTIC DEFORMATION SENSORS FOR BRIDGESMore than 30 fiber optic sensors were installed in the deck [4].The chart presented in Creep deformation measurement using quartz optical fiber#227; shows the results obtained by 4 fiber optic deformation sensors during the first month after concreting.The thermal expansion phase is perceptible with an elongation value around 0,06 .

DE102004059804A1 - Quartz glass hollow cylinder,as an

Heretofore,to produce a dimensionally stable quartz glass hollow cylinder as the starting material for an optical preform or optical fiber,a tubular semi-finished product having an inner bore whose diameter has a machining allowance from a hollow cylindrical gage has been provided,and then the inner bore diameter of the semifinished product is mechanical machined to the hollow cylinder Creep measurement of optical fiber with interferometerMeasurement of creep of optical fiber by a low coherent white light double interferometer system Zhihong Xua and Farhad Ansarib a Science School,Nanjing University of ScienceTechnology,Nanjing ,China,210014,bDept.of CivilMaterial Engineering,University of Illinois at Chicago,Chicago,IL,USA ,60607 ABSTRACT In this paper the optical fiber are simplified as viscoelastic model and the Creep deformation measurement using quartz optical fiber Apr 01,2001 Creep deformation measurement using quartz optical fiber#0183;This paper describes an optical system for high temperature creep strain measurement using quartz optical fiber,super long working distance microscope and digital image processing techniques.In this system one end of the quartz optical fibers is arrayed in a small area on the specimen surface and the other end is illuminated by a laser beam.The fiber ends on the specimen surface

Creep deformation measurement using quartz optical fiber

Apr 01,2001 Creep deformation measurement using quartz optical fiber#0183;This paper describes an optical system for high temperature creep strain measurement using quartz optical fiber,super long working distance microscope and digital image processing techniques.In this system one end of the quartz optical fibers is arrayed in a small area on the specimen surface and the other end is illuminated by a laser beam.Cited by 9Publish Year 2002Author Shan-Tung Tu,Jian-Ming Gong,Xiang Ling,Xiao-Yuan HeCOREThis is an update request for the document Creep deformation measurement using quartz optical fiber by X.Y.He,J.Xia,C.Quan,C.J.Tay and S.D.Tu Your paper was deposited in [email protected] and appears online at Before we are able to make any updates or deletions,you must ensure that the original record at this location is updated/removed.Cited by 4Publish Year 2001Author X.Y.He,J.Xia,C.Quan,C.J.Tay,S.D.TuMeasurement of Local Creep Deformation in Cross-Weld Aug 02,2001 Creep deformation measurement using quartz optical fiber#0183;A new technique for measuring long-term local creep deformation was developed.It uses quartz optical fiber marking,remote monitoring,and image processing.Long-term measurements of the creep deformations of base metal,weld metal,and heat-affected zone in cross-weld specimens were performed at high temperature,which verify the new technique.

Cited by 4Publish Year 2001Author X.Y.He,J.Xia,C.Quan,C.J.Tay,S.D.TuCreep deformation measurement using quartz optical fiber

Creep deformation measurement using quartz optical fiber.Author links open overlay panel X.Y.He a J.Xia a C.Quan b C.J.Tay b S.D.Tu c.Show moreCited by 4Publish Year 2001Author X.Y.He,J.Xia,C.Quan,C.J.Tay,S.D.TuCreep deformation measurement using quartz optical fiber Creep deformation measurement using quartz optical fiber Article in Optics Communications 190(1-6):79-86 April 2001 with 32 Reads How we measure 'reads'CURE SHRINKAGE AND SHAPE DISTORTION OF LTherefore,this study evaluates their effect using fiber-optic-based in-situ strain monitoring and shape measurement.2.Experiment 2.1 Internal Strain Measurement using Optical Fiber Sensors Cure-induced strain monitoring was conducted using fiber Bragg grating (FBG) sensors embedded in the L-shaped corner part (Figure 3).

CURE SHRINKAGE AND SHAPE DISTORTION OF L

Therefore,this study evaluates their effect using fiber-optic-based in-situ strain monitoring and shape measurement.2.Experiment 2.1 Internal Strain Measurement using Optical Fiber Sensors Cure-induced strain monitoring was conducted using fiber Bragg grating (FBG) sensors embedded in the L-shaped corner part (Figure 3).COREThis is an update request for the document Creep deformation measurement using quartz optical fiber by X.Y.He,J.Xia,C.Quan,C.J.Tay and S.D.Tu Your paper was deposited in [email protected] and appears online at Before we are able to make any updates or deletions,you must ensure that the original record at this location is updated/removed.COREThis is an update request for the document Creep deformation measurement using quartz optical fiber by X.Y.He,J.Xia,C.Quan,C.J.Tay and S.D.Tu Your paper was deposited in [email protected] and appears online at Before we are able to make any updates or deletions,you must ensure that the original record at this location is updated/removed.

An elastic deformation measurement method for helicopter

Jun 01,2013 Creep deformation measurement using quartz optical fiber#0183;The optical-imaging method often utilizes the optical fiber,CCD camera,laser and image-processing software He using the quartz optical fiber to detect the creep deformation measurement ; Huang introduced a real-time and in situ optical measuring system to measure the deformation fields of notched samples under impact tension ; Xie proposed A study on the jacket effect of fiber optic sensors - NASA/ADSThe jacket can protect optical fiber,on the other hand,exert effect on the optical fiber's sensitivity to temperature and strain.In this paper,two types of optical fiber,i.e.with jacket (Type-A) and without jacket (Type-B),were selected to study the jacket effect on strain measurement,and relative experiment schemes and results are present.A New Measurement Approach for Small Deformations ofThe test system includes a triaxial test chamber with a loading frame,pressure supply devices,the SDT,fiber optic sensing interrogator and computer.In this study,the external LVDT device was also used to measure the total deformation of the soil specimen.The SDT was used to measure the local deformation with the maximum strain up to 0.3%.

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