[보고서]장기가동 원전재료 안전성 향상 신기술 개발

김홍표

보고서 정보

주관연구기관

한국원자력연구원
Korea Atomic Energy Research Institute

연구책임자

김홍표

참여연구자

이봉상 , 황성식 , 이덕현 , 권준현 , 허도행

보고서유형

1단계보고서

발행국가

대한민국

언어

한국어

발행년월

2015-05

주관부처

미래창조과학부
Ministry of Science, ICT and Future Planning

등록번호

TRKO201800009447

DB 구축일자

2018-05-26

키워드

재료열화.손상기구.손상예측.부식/응력부식.파괴특성.조사손상.전산모사.조기 진단.손상제어.완화.부식용출.부식생성물 부착.덴팅.Material ageing.degradation mechanism.degradation prediction.corrosion/SCC.fracture toughness.radiation damage.computer simulation.early diagnosis.degradation control.mitigation.corrosion release.crud deposition.denting.

DOI

https://doi.org/10.23000/TRKO201800009447

표 Task presentation and scope of BENCH-KJ.
표 Stress intensity factors for clad defect under PTS condition (a=12, a/c=1/3).
표 Various geometries considered in BENCH-KJ (plate, cylinder, elbow and etc.).
표 Typical 3-D FE meshes for elastic/elastic-plastic analysis.
표 Codes comparison for the case K1 (Task 1).
표 Codes comparison for the cases of C1~C9 - circumferential defects/mechanical loading (Task 2).
$Layout of K/J fracture mechanics analysis program for cracked cylinder and elbow based on RCC-MRx code.$ 표 Layout of K/J fracture mechanics analysis program for cracked cylinder and elbow based on RCC-MRx code.
표 △T30 determined by 10CFR50.61a irradiation embrittlement model
표 △T30 determined by AL-PTS program
표 (a) Longitudinal crack extension and no arrest SECY-82-465 PRA results (b) RT limits and TWCF for plate-welded plants in NUREG-1874.
표 (a) FAVOR data streams flow through three modules (b) Flow chart for PFM evaluation.
표 △RTNDT regression model in JEAC 4201 : (a) Surveillance data and prediction of embrittlement (b) Evaluation of neutron flux.
$Shifting method for fracture toughness(KIC) according to JEAC 4206 (appendix 3).$ 표 Shifting method for fracture toughness(KIC) according to JEAC 4206 (appendix 3).
표 Detailed flow chart for AL-PTS program.
표 Marshall flaw distributions.
$Flow chart for deterministic/probabilistic fracture mechanics evaluation for reactor vessel.$ 표 Flow chart for deterministic/probabilistic fracture mechanics evaluation for reactor vessel.
표 GUI of PROFAS-RV (a) Analysis model tab (b) Simulation tab.
표 Variation of total stress intensity factor variation with transient time (a) ASME code (b) AFCEN(RCC-MRx) code.
표 Crack growth/arrest diagram
표 Chemistry of archival reactor pressure vessel steel of Hanul Unit 3 in wt%.
표 Tensile properties of RPV steel at various temperatures.
표 Neutron irradiation results for 13M-02K capsule (87-88 cycle, 1607.31MWD).
표 Optical micrograph for RPV steel of Hanul Unit 3.
표 Tensile properties of SA508 Gr.3 low alloy steel at different test temperature.
표 Charpy transition curves of SA508 Gr.3 reactor pressure vessel steel.
표 Master Curve testing results for RPV steel; (a) T-L orientation, (b) L-T orientation.
표 13M-02K instrumented capsule for materials irradiation tests in research reactor (HANARO).
표 Inner parts of 13M-02K instrumented capsule for materials irradiation tests in research reactor (HANARO).
표 Temperature profile of 13M-02K in material irradiation capsule.
표 Fast neutron fluence profile in 13M-02K material irradiation capsule (E>0.1, 1.0MeV).
표 Comparison of the stress-strain curves between pre-irradiated and post-irradiated RPV (Hanul Unit 3) steels.
표 Comparison of the yield strength and ultimate tensile strength between pre-irradiated and post-irradiated RPV (Hanul Unit 3) steels at various temperatures.
표 Comparison of Charpy transition curves between pre-irradiated and post-irradiated RPV (Hanul Unit 3) steels.
표 Comparison of Master Curve toughnesses between pre-irradiated and post-irradiated RPV steels.
표 Safety assessment procedure for RPV steel of operating reactor.
표 Current status of surveillance tests of Korean RPVs.
표 Examples of off-line DB established for the radiation embrittlement characteristics of RPV steels.
표 Comparison of coefficients in TTS prediction formula drawn by KAERI and those presented in 10CFR50.61a.
표 Lines of best fit for MD vs Фte0.5 datasets of base metals of Korean RPVs.
표 Lines of best fit for MD vs Фte0.5 datasets of weld metals of Korean RPVs.
표 Lines of best fit for CRP vs g(Cue,Ni,Фte) datasets of weld metals of RPV in Kori Unit 1.
표 ΔT41J (ΔT30) vs fluence curves for base metals of RPVs in Hanul Unit 1 &2 predicted by formulae of KAERI, RG 1.99 Rev.2 and 10CFR50.61a.
표 ΔT41J (ΔT30) vs fluence curves for the weld metal of RPV in Kori Unit 1 predicted by formulae of KAERI, RG 1.99 Rev.2 and 10CFR50.61a.
표 Chemical composition of tested material.
표 Summary of tensile test results at R.T. and 288℃(rod-type specimen).
표 Summary of Charpy transition properties.
표 Summary of Reference temperature, T0 from Master curve test.
표 Block of archive material used in this study and schematic drawing for sample locations.
표 Tensile properties at RT and 288℃ as a function of specimen depth.
표 Charpy transition curves: (a) inner surface, (b) 1/8T, (c ) 1/4T, (d) 1/2T, (e) 3/4T, (f) 7/8T, (g) outer surface, and (h) 1/4T L-T.
표 Changes in Upper-shelf enery as a function of specimen depth.
표 Changes in index temperature, T41J, T68J as a function of specimen depth.
표 Master curves: (a) inner surface, (b) 1/8T, (c ) 1/4T, (d) 1/2T, (e) 3/4T, (f) 7/8T, (g) outer surface, and (h) 1/4T L-T.
표 Changes in Reference temperature, T0 as a function of specimen depth.
표 Quantification of microstructure at different location of RPV.
표 Measurement of prior austenite grain size using intercept method at different location of RPV.
표 Quantification of total carbides at different location of RPV.
표 Quantification of carbides over 0.6 diameter (critical size) at different location of RPV.
표 Optical microstructure image of inner part of RPV. (a) 0T (Inner surface), (b) 1/8T, (c) 1/4T, and (d) 1/2T (center).
표 Optical microstructure image of outer part of RPV. (a) 1T (outer surface), (b) 7/8T, (c) 3/4T, and (d) 1/2T (center).
표 EBSD IPF (Inverse Pole Figure) map and IQ(Image Quality) map of inner part of RPV. (a) 0T (Inner surface), (b) 1/8T, (c) 1/4T, and (d) 1/2T (center).
표 EBSD IPF (Inverse Pole Figure) map and IQ(Image Quality) map of outer part of RPV. (a) 1T (outer surface), (b) 7/8T, (c) 3/4T, and (d) 1/2T (center).
표 SEM microstructure image of inner part of RPV. (a) 0T (Inner surface), (b) 1/8T, (c) 1/4T, and (d) 1/2T (center).
표 SEM microstructure image of outer part of RPV. (a) 1T (outer surface), (b) 7/8T, (c) 3/4T, and (d) 1/2T (center).
표 Fracture surface of tested PCVN specimen.
$Fracture Initiation site of Charpy impact test; (a) Intersection of ductile fractured CVN specimen beneath the fracture surface and (b) fracture surface of cleavage fractured specimen.$ 표 Fracture Initiation site of Charpy impact test; (a) Intersection of ductile fractured CVN specimen beneath the fracture surface and (b) fracture surface of cleavage fractured specimen.
$Intersection SEM image of cleavage fractured CVN specimen beneath the fracture surface.$ 표 Intersection SEM image of cleavage fractured CVN specimen beneath the fracture surface.
$Relationships between (a) number of carbides and reference temperature (T0), (b) volume fraction and reference temperature (T0) at the different location of RPV.$ 표 Relationships between (a) number of carbides and reference temperature (T0), (b) volume fraction and reference temperature (T0) at the different location of RPV.
표 Standard master curve and measured KJC values at 1/2T and 1/4T.
표 Layout of bimodal master curve analysis program and VB code.
표 Comparison of the bimodal and conventional master curve analyses for all dataset corresponding to temperature dependence.
표 Comparison of standard and bimodal master curve with all measured KJC values.
표 Chemical compositions of Type 347 and Type 347N (wt%).
표 Simulated PWR environment.
표 PWR environmental loop for fatigue crack growth rate test.
표 Schematic diagram of PWR environmental loop for fatigue crack growth rate test.
표 Drawing of FCGR test specimen.
표 Tensile properties for Type 347 and Type 347N at various temperatures.
표 Stress-strain curves for Type 347 and Type 347N at temperatures of 25˚C and 316˚C.
표 Fatigue crack growth rate for Type 347 as a function of dissolved hydrogen content.
표 Fracture surface after fatigue crack growth rate test at 316℃ for Type 347.
표 Fatigue crack growth rate as a function of B and Li contents for Type 347.
표 Fatigue crack growth rate as a function of frequency for Type 347.
표 Fracture surface after fatigue crack growth rate at DO < 5 ppb and 316℃ for Type 347.
표 Fracture surface after fatigue crack growth rate at DO=100 ppb and 316℃ for Type 347.
표 Oxide thickness after fatigue crack growth rate test at 316℃ for Type 347.
표 Fatigue crack growth rate as a function of temperature at a different dissolved oxygen content for Type 347N.
$Oxide on fracture surface after fatigue crack growth rate test at 316℃ for Type 347N.$ 표 Oxide on fracture surface after fatigue crack growth rate test at 316℃ for Type 347N.
표 Fatigue crack growth rate as a function of frequency at a different dissolved oxygen content for Type 347N.
표 Fracture surface after fatigue crack growth rate test at DO < 5ppb and 316℃ for Type 347N.
표 Fracture surface after fatigue crack growth rate test at DO=100 ppb and 316℃ for Type 347N.
표 Fatigue crack growth rate as a function of dissolved oxygen content for Type 347.
$Oxide on fracture surface after fatigue crack growth rate test at 316℃ for Type 347.$ 표 Oxide on fracture surface after fatigue crack growth rate test at 316℃ for Type 347.
표 Anodic polarization curves and corrosion rate for Type 347 and Type 347N.
표 Oxide thickness after anodic polarization.
표 Threshold stress intensity factor as a function of temperature and dissolved oxygen content for Type 347.
표 Summary of tensile properties at different test temperature obtained from MTS system.
표 Summary of tensile properties at different test temperature obtained from Gleeble system
표 Test equipments with heating system for high temperature tensile test.
표 Detailed images for heating system of each equipment.
표 Shapes of rod type tensile specimens for each equipment.
표 Temperature profiles in the gage length of tensile specimen.
표 Stress-Strain curves of SA508 Gr.3 low alloy steel at different test temperature obtained from MTS system.
표 Temperature dependency of Yiels and Tensile strength in SA508 Gr.3 low alloy steel.
표 Image of specimens after tensile test at various temperature.
표 Inside view of Gleeble system and specimen for tensile test.
표 Stress-Strain curves of SA508 Gr.3 low alloy steel at different test temperature obtained from Gleeble system.
표 Image of Gleeble specimens after tensile test at various temperature.
표 Diffusivity and standard deviation of SA508 Gr.3 base and weld material.
표 Thermophysical properties (specific heat and conductivity) of SA508 Gr.3[4-6].
표 Thermophysical properties (elastic modulus and thermal expansion coefficient) of SA508 Gr.3[2-4].
표 (a) dL/L0-temperature curve of dilatometer test during heating and cooling. (b) determination of transformation start and finish temperature using dL/L0-temperature curve(a).
표 Test instrument for thermophysical property measurement (a) Thermo-Mechanical Analyzer (TMA), (b) Differential Scanning Calorimetry (DSC), and (c) Laser Flash Apparatus (LFA).
표 Comparison of specific heat-temperature curve of Base metal and Weld metal during heating.
표 Comparison of dL/L0-temperature curve of Base metal and Weld metal during heating and cooling.
표 Comparison of Diffusivity of Base metal and Weld metal.
표 Temperature dependence of Thermophysical properties ( (a) specific heat, (b) thermal conductivity, (c) elastic modulus and (d) thermal expansion coefficient) of SA508 Gr.3[4-6]
표 PWSCC CGR data of Alloy 690[1].
표 Banding microstructure of Alloy 690[2].
표 Effect of cold working on PWSCC CGR of Alloy 690TT[3].
표 Plot of PWSCC CGR of Alloy 690 with various K values[3].
표 Effect of temperature on CGR of Alloy 600 base metal and HAZ[4].
표 (a) Specimen configuration of Alloy 690, and (b) PWSCC CGR vs. K of Alloy 690 base metal and HAZ[4].
표 Variation of plastic strain of Alloy 690 across weld interface[4].
표 PWSCC CGR data of Alloy 52 and 152 weld metals[4].
표 SCC rate of Alloy 600 and 690 weld metals with various Cr contents[4].
표 CGR vs. K of Alloy 52 and 152[4].
표 CGR vs. K of Alloy 152[4].
표 Maximum depth of cracking in mils of single u-bend specimen of Ni-Cr-Fe alloys exposed for 8 weeks to deaerated water at 316℃ contaminated with metallic lead powder[3].
표 PbSCC of Alloy 690TT[5].
표 SCC resistance of Alloy 690TT at various pH[5].
표 Relationship between Pb content and SCC susceptibility[3].
표 Summary of the C-ring test result.
표 Comparison of the stress corrosion cracking resistance. (Pb=100 ppm, +95 mv, vs. Ni), A) No. of cracks(>100 mm) within the limited distance, B) Propagation rate of the maximum crack, C) Propagation rate of the average cracks.
표 Comparison of the stress corrosion cracking resistance. (Pb=5,000ppm, +95mV, vs. Ni), A) No. of cracks(>100mm) within the limited distance, B) Propagation rate of the maximum crack, C) Propagation rate of the average cracks.
표 PbSCC susceptibilities of various Ni-base alloys.
표 Chemical compositions of EPRI Alloy 690 welds (wt%).
표 Chemical compositions of GA Alloy 690 welds (wt%).
표 Microstructures and carbide precipitations in the EPRI and GA Alloy 690 base metals.
표 Carbide precipitations and their related chromium depletions around grain boundaries in EPRI and GA Alloy 690 base metals.
표 YSs, UTSs and elongations of test specimens obtained from EPRI and GA alloy welds.
표 Von Mises stress contour around the Alloy 690 CRDM nozzle and its J-groove weld using 2-D FE model.
표 Von Mises stress contour around the Alloy 690 CRDM nozzle and its J-groove weld using 3-D FE model
표 Banding microstructure of Alloy 690.
표 Phase diagram of Ni-Cr[1].
표 Phase diagram of Ni-Cr of alloy melt with enrichment of C and Cr, and depletion of Fe[1].
표 Schematic diagram of orientation relation among crack growth direction, cold rolling direction, and carbide banding[2]
표 Microstructure of (a) forged bar (heat no. 135264) and (b) hot-extruded pipe (heat no. RF798)
표 Chemical composition of Alloy 690 materials used in this work (wt%).
표 Photographs of test block of Alloy 690 materials before and after cold-rolling.
표 Test condition of 1D cold rolling for Alloy 690 materials.
표 Test materials used in this work.
표 Photographs of cold-rolled Alloy 690 with carbide banding.
표 (a) Micro-hardness test results of cold-rolled Alloy 690, and (b) photograph of indented surface.
표 IPF images of cold-rolled Alloy 690 measured by EBSD (x300).
표 KAM maps of cold-rolled Alloy 690 measured by EBSD (x300).
표 PWSCC CGR test facility equipped with EN-DCPD devices.
표 PSD plots of EN measured at various test conditions.
표 Time record of EN measured from CT specimen at various loading conditions.
표 PSD plots of EN measured from CT specimen at various loading conditions.
표 EN-DCPD analysis procedure and Weibull plots of EN-DCPD at various loading conditions.
표 SEM micrographs of cracked surface of CT specimen after EN-DCPD test.
표 The locations and orientations of the plate and tensile specimens in (a) EPRI Alloy 690/152 and (b) GA Alloy 690/152 welds.
표 Dimensions of the (a) tensile specimen and (b) plate specimen for analysis of surface oxide layer.
표 PWSCC cracks in the Alloy 690 base metal, HAZ and Alloy 182 weld metal.
표 Cracking behaviors around the heat affected zone of Alloy 690/152 weld.
표 SEM images showing the surface oxides formed in the EPRI Alloy 690/152 weld.
표 GI-XRD peaks observed from the base metal and weld metal of EPRI and GA Alloy 690/152 welds.
표 SEM cross sectional views of the surface oxide layers formed on the Alloy 690 base metal and Alloy 152 weld metal.
표 Orientation of 1/2T CT specimen.
표 PWSCC CGR vs. K of cold-rolled Alloy 690
표 Fractographs of (a) cross-section of PWSCC crack, (b) cracked surface with TG mode, and (c) crack surface with IG model.
표 Von Mises stress and equivalent strain relaxation due to extraction of CT specimen
표 (a) IPF image and (b) KAM map measured from 20% cold-rolled Alloy 690 with carbide band (x300).
표 PQ images of cold-rolled Alloy 690 (x2,500).
표 KAM maps of cold-rolled Alloy 690 (x2,500).
표 (a) PQ images, and (b) KAM maps of 20% cold-rolled Alloy 690 (x2,500).
표 Relation between Averaged KAM and thickness reduction ratio of Alloy 690 materials with homogeneous and inhomogeneous microstructure.
표 SEM cross sectional views of surface oxide layers on the Alloy 600/182 and Alloy 690/152 welds.
표 Locations of TEM specimen’s pick up and TEM images of the surface oxide layers on the Alloy 600/182 and Alloy 690/152 welds.
표 TEM/EDS chemical composition maps of surface oxides formed on the Alloy 600 base metal.
표 TEM/EDS chemical composition maps of surface oxides formed on the Alloy 600 base metal, 182 weld metal and Alloy 690 base metal.
표 Variation of chemical compositions across the surface oxide layers of the Alloy 600 and Alloy 690 based metal.
표 Comparison of the present result on the surface oxide layer of Alloy 600 base metal with other’s result.
표 SEM cross sectional views of surface grain boundaries in the Alloy 600/182 and Alloy 690/152 welds.
표 TEM/EDS chemical composition maps around surface grain boundaries in the Alloy 600 and Alloy 690 base metals.
표 Comparison of the present result on the grain boundary diffusion of oxygen in the Alloy 600 base metal with other’s result.
표 PWSCC and CF CGR of Alloy 690 and 600 materials at varioius K values.
표 Surface images on the (a) EPRI Alloy 690/152 and (b) GA Alloy 690/152 taken after PWSCC test with a hydrogen concentration of 5 cc/kg H2O.
표 GI-XRD peaks by surface oxide structures formed on Ni-base alloys during PWSCC test in the dissolved hydrogen concentration of 5 cc/kg H2O.
표 Surface oxide structures formed on Ni-base alloys after PWSCC test in the dissolved hydrogen concentration of 5 cc/kg H2O.
표 Surface oxide structures formed on Ni-base alloys after PWSCC test in the dissolved hydrogen concentration of 30 cc/kg H2O.
표 PWSCC and CF CGR of Alloy 690 and 600 materials at various K values.
표 Arhenius plots of PWSCC CGR of Alloy 690 materials.
표 Optical micrograph of as-received (left) and 40% cold-rolled Alloy 690 (right) after strain relieving thermal treatment at 720℃ for 1h.
표 Optical micrograph of as-received (left) and 40% cold-rolled Alloy 690 (right) after strain relieving thermal treatment at 500℃ for 10h.
표 KAM maps of cold-rolled Alloy 690 and 600 materials after SR thermal treatment by EBSD (x300).
표 KAM maps of cold-rolled Alloy 690 and 600 materials after SR thermal treatment by EBSD (x2,500).
표 Averaged KAM values of cold-rolled Alloy 690 materials after SR thermal treatment.
표 Water chemistry change of PWR secondary side[1].
표 Examples of Pb detection in steam generator[4].
표 pH dependency of crack growth rate for Alloy 600MA with/without Pb[3].
표 SCC susceptibility of Alloy 690 with the Pb concentration.
표 (a) Maximum crack depth of STUB and C-ring specimens made of Alloy 600 and Alloy 690, (b) ATEM image of transgranular stress corrosion crack of Alloy 690 exposed to Pb contaminated environment.
표 Comparison of SCC resistance with alloy.
표 SCC susceptibility as functions of the alloy and Pb addition in alkaline solution using RUB specimen.
표 pH dependency of PbSCC for various alloys.
표 Comparison of SCC depth, polarization cureve and weight loss for Alloy 690 and Alloy 800.
표 (a) Polarization curves, (b) anodic current density with the Pb concentration for Alloy 690, (c) polarization curve and (d) oxide hardness for Cr with the Pb addition.
표 Summary of worldwide PbSCC evaluating method for Alloy 690.
표 TEM-EDS results for oxide on Alloy 690 during 14 day immersion at 315℃ in deaerated 0.1M NaOH (a) without Pb and (b) with Pb.
표 Stress strain curves obtained in 10wt% NaOH with Pb and without Pb at 315℃ for Alloy 690.
표 E-pH diagram at 315℃ and pH range attainable (shaded area) in the crevice.
표 Stress strain curves obtained in 1M NaOH with Pb and without Pb at 315℃ for Alloy 690.
표 Stress strain curves obtained in 0.5M NaOH with Pb and without Pb at 315℃ for Alloy 690.
표 Summary of SCC test results for Alloy 690.
표 Side surface image obtained after SSRT test in 0.5M NaOH with Pb and without Pb at 315℃ for Alloy 690.
표 Stress strain curves obtained in 0.1M NaOH as a function of PbO content at 315℃ for Alloy 600.
표 SCC ratio vs. NaOH concentration for Alloy 690 and Alloy 600 obtained from SSRT.
표 Polarization curves for Alloy 690 in 0.1M NaOH with/without PbO and dissolved oxygen at 315℃.
표 Schematic polarization curves for metal electrode where hydrogen evolution occurs as cathodic reaction.
표 Schematic anodic and cathodic reactions occurring on Alloy 690 surface in a solution with lead.
표 Fracture surface after SSRT and design of SSRT specimen.
표 RUB specimen and cutting position for crack sizing.
표 Summary of SSRT and RUB test results.
표 pH(T) dependency of SCC rate for Alloy 690 and Alloy 600.
표 Factor of improvement of Alloy 600TT vs. Alloy 600MA for westinghouse type steam generator.
표 Summary of factor of improvement for Alloy 600TT vs. Alloy 600MA at various laboratories.
표 pH dependency of factor of improvement for Alloy 600TT vs. Alloy 600MA under lead contaminated environment.
표 Summary of SSRT and RUB test results in solutions containing inhibitor.
표 OM images of RUB specimens after 12 week test (a) without inhibitor and (b) with NiB for Alloy 690.
표 OM image of RUB specimen after 12 week test without inhibitor for Alloy 690.
표 OM image of RUB specimen after 12 week test with CeB for Alloy 690.6
표 Design diagram of eddy current test probe for U-bend ovality measurement.
표 Result of ovality measurement for row 1 u-tube of 3/4" OD with radius of 2.25"[4].
표 Design diagram of eddy current coil unit for inspection of low row u-tubes.
표 Design diagram of eddy current coil unit for inspection of high row u-tubes.
표 Photographs of prototype eddy current probes manufactured for the inspection of (a) low row u-tubes and (b) high row u-tubes.
표 Dimension of standard tube specimen for ovality measurement.
표 Calibration curve for conversion of signal amplitude to inner diameter.
표 Results of ovality measurement for straight tube region.
표 Results of ovality measurement for row 1 u-tube.
표 Results of ovality measurement for row >17 square type tube.
표 ECT c-scan of u-bend cracks.
표 Morphology of u-bend crack.
표 Sensitivity of +point coil amplitude on test frequency for EDM notches.
표 Optimized high frequency coils and test frequency characteristics, (a) +point and (b) pancake.
표 Prototype eddy current probes for u-bend.
표 +Point signals of (a) u-bend crack manufactured and (b) u-bend crack in US plant.
표 Vpp and signal to noise ratio of prototype eddy current probe for u-bend specimen with natural crack of small size.
표 Coil body size requirements.
표 Design diagram of 1-body eddy current probe.
표 Design diagram of 2-body eddy current probe.
표 Photograph of prototype eddy current probes.
표 EDM notch signals with test frequency.
표 Characteristics of Vpp amplitude on test frequency for various defect depth.
표 Normal signal of prototype probe for shape change.
표 Abnormal signal of prototype probe for shape change.
표 ZETEC analysis results of prototype eddy current probe.
표 Driving performance of prototype eddy current probe.
표 The original signal represented on the time domain (left), and a wavelet transformed signal (right). The power of signal is represented as a function of time and frequency.
표 Schematic of nonlinear ultrasonic scanning system.
표 Photo of a nonlinear ultrasonic scanning system.
표 Fatigue test parameter.
표 Design diagram of 1/2T-1T CT specimens and pre-notches to make a trace for various shape of cracks.
표 Milling processing of both sides to make of nature crack and specimen photograph.
표 Manufactured nature cracking.
표 Comparison of harmonics between a) intact region and b) cracked region.
표 Normalized ultrasonic resonance pattern with respect to various exciting voltages.
표 Scanned image of cracked region a) photo of a crack, images of b) 1st fundamental frequency, c) 2nd harmonics, d) 3rd harmonics, e) 4th harmonics, f) 5th harmonics, g) 6th harmonics.
표 A setup for laser nonlinear resonant ultrasound spectroscopy.
표 A laser beam focused to a specimen to acquire a ultrasonic data.
표 Typical specimen assembly for nonlinear resonant ultrasound spectroscopy.
표 A setup for nonlinear ultrasonic resonance experiments.
표 Nonlinear resonance spectrum shows a more frequency shift when a specimen with longer crack length.
표 Block diagram for an impulse resonance acoustic spectroscopy.
표 Impulse resonance spectrum shows a frequency shift with increasing impact energy.
표 A drawing of specimen of PARENT open round robin test.
표 A typical nonlinear ultrasound spectrum of a specimen with crack.
표 Photo shows the controller and PC of LDV (Laser Doppler Vibrometer).
표 Photo of Laser with a tripod for a detector.
표 Photo shows a impact hammer with a ruler for measurement of impact hight or energy.
표 An example of specimen with a reflecting tape for laser.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen #1. color display shows vibration displacement measured by a piezo-sensor in the impact hammer.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen #2. color display shows vibration displacement measured by a piezo-sensor in the impact hammer.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen. color display shows vibration displacement or impact height measured by a piezo-sensor in the impact hammer.
표 Acoustic resonance spectrum with a various impact displacement for a CT specimen.
표 Group velocity dispersion curve for a carbon steel pipe with diameter of 6 inch.
표 Photo of buried pipe mockup (Dia. = 6 inch).
표 Photo of buried pipe mockup (Dia. = 2.5 inch).
표 A ring type double magnetostrictive bands.
표 A spiral type double-layer coil(top) and single-layer coil (bottom) for generation and reception of guided wave.
표 A phot shows two magnetic bands bonded to 2.5 inch pipe for DC bias (left) and manually wound coil for AC magnetization (right).
표 A spiral coil for AC magnetization wound on a 6 inch pipe and terminals for connection to the magnetostrictive guided wave inspection system.
표 A plot of signal amplitude vs. DC bias current. (Dia. = 2.5 inch, signal from 40% circ. notch at 0.68m from the sensor)
표 A plot of signal amplitude vs. frequency (Dia. = 2.5 inch, sensor = magnetic band + ribbon coil).
표 Phase velocity dispersion curve for a carbon steel pipe d = 63.5 mm, t = 7.0 mm.
표 Group velocity dispersion curve for a carbon steel pipe d = 63.5 mm, t = 7.0 mm.

과제명(ProjectTitle) :	-
연구책임자(Manager) :	-
과제기간(DetailSeriesProject) :	-
총연구비 (DetailSeriesProject) :	-
키워드(keyword) :	-
과제수행기간(LeadAgency) :	-
연구목표(Goal) :	-
연구내용(Abstract) :	-
기대효과(Effect) :	-

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 제목(한글), 저자명(한글), 발행일자, 전자원문, 초록(한글), 초록(영문) 관리번호, 제목(한글), 제목(영문), 저자명(한글), 저자명(영문), 주관연구기관(한글), 주관연구기관(영문), 발행일자, 총페이지수, 주관부처명, 과제시작일, 보고서번호, 과제종료일, 주제분류, 키워드(한글), 전자원문, 키워드(영문), 입수제어번호, 초록(한글), 초록(영문), 목차
저장형식	Text(ASCII format) Excel format
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

장기가동 원전재료 안전성 향상 신기술 개발
Development of Advanced Technology for Enhancing Long Term Operation Safety of Nuclear Materials 원문보기

초록 ▼

Abstract ▼

목차 Contents

표/그림 (300)

표/그림 (300)

연구자의 다른 보고서 :

참고문헌 (25)

연구과제 타임라인

관련 콘텐츠

원문 보기

이 보고서와 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

연합인증

장기가동 원전재료 안전성 향상 신기술 개발 Development of Advanced Technology for Enhancing Long Term Operation Safety of Nuclear Materials 원문보기

초록 ▼

Abstract ▼

목차 Contents

표/그림 (300) 모든 표/그림 보기

표/그림 (300) 슬라이드로 보기

연구자의 다른 보고서 :

김홍표 (46) 이봉상 (61) 황성식 (31) 이덕현 (34) 권준현 (33) 허도행 (20)

참고문헌 (25)

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

관련 콘텐츠

원문 보기

이 보고서와 함께 이용한 콘텐츠

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

장기가동 원전재료 안전성 향상 신기술 개발
Development of Advanced Technology for Enhancing Long Term Operation Safety of Nuclear Materials 원문보기

표/그림 (300)

표/그림 (300)