CN205483839U - Big converting pipe says that circumferential weld bending test is quick -witted - Google Patents
Big converting pipe says that circumferential weld bending test is quick -witted Download PDFInfo
- Publication number
- CN205483839U CN205483839U CN201620016583.1U CN201620016583U CN205483839U CN 205483839 U CN205483839 U CN 205483839U CN 201620016583 U CN201620016583 U CN 201620016583U CN 205483839 U CN205483839 U CN 205483839U
- Authority
- CN
- China
- Prior art keywords
- acoustic emission
- bending
- pressure head
- pipeline
- large deformation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a big converting pipe says that circumferential weld bending test is quick -witted, the guide rail sets up the middle position at the base, at the fixed fixed station that sets up in the both sides of base, correct pressure head and crooked pressure head setting in the guide rail, the one end and the crooked pressure head fixed connection of lead screw, the other end is connected with the correction pressure head, the outside at crooked pressure head links to each other with hydraulic pusher's pushing ram is fixed, set up by acoustic emission sensor on the bending test machine, the acoustic emitter that signal amplifier and acoustic emission data collection card form. Compared with the prior art, the utility model discloses both can realize mechanics signal, deformation signal among the bending test, can also gather and the analysis to the acoustical signal.
Description
Technical field
This utility model belongs to field of engineering technology, more specifically, for the Mechanics Performance Testing field of the three-point bending/four-point bending of large deformation pipeline, relates to a kind of bending property assay device testing various large deformation pipeline and welding point thereof.
Background technology
At present, exploitation and the utilization of China's Marine oil and gas resource are concentrated mainly on shallow sea, and owing to technical capability limits, the utilization of deep-water subsea petroleum resources is the most delayed.Wherein, the laying technology of submerged pipeline is one of key technology of deep water hydrocarbon resource exploitation.From the point of view of the development of submerged pipeline pipe-laying technique, " pipe crimping type " pipe laying is to developed submerged pipeline laying technology the most in the world, and this technology is suitable for deep-sea, efficient and safety, is widely used in countries such as the U.S., Britain, Norway.But, it is few that the research work of this technology is carried out by China, has the most only grasped " S " type pipe-laying technique that applicable shallow sea is laid, has constrained the development to deep-sea.In view of the working environment at the South Sea, Reel-lay is optimal lay method, can be the most domestic also not for performance testing equipment and the assessment technology of marine oil and gas large deformation pipeline, therefore, development deep-sea pipe-laying technique, first develop the testing equipment of necessity.
Due to during Reel-lay, pipeline need to experience volume, uncoiling under tension, the large deformation process repeatedly such as stretch.Welded tube is in large deformation BENDING PROCESS, girth joint can occur crack initiation, extension, the most serious fracture due to the effect of residual stress own and bending stress, inhomogeneities and the complexity of welding residual stress distribution due to welding point bearing capacity, girth joint bend fracture is caused to have bigger randomness and sudden, the most suddenly lost efficacy when being often on active service under safety coefficient, caused immeasurable loss.On-line real-time measuremen girth joint bending crack process the most accurate, reliable, determine the position of cracking and assess the degree of cracking and have great importance.Therefore, the pipe bending performance test apparatus designed must can simulate the large deformation bending of pipeline, the processes such as back-flexing (three-point bending and four-point bending), and the deflection during actual military service can be reached, use acoustic emission can whether pipeline in BENDING PROCESS be ftractureed simultaneously and be monitored and assess.
Therefore, carrying out pipe crimping type pipe laying equipment research in " pipe crimping type " pipe laying and have important practical significance and urgent, can be that technical foundation is established in China's exploitation deep-sea oil gas development of resources, the non-deformability for pipeline provides testing equipment.So, for the demand of deep-sea oil gas conveyance conduit " pipe crimping type " laying technology, develop large-scale homogeneous tube bend pipe analog and there is important practical significance.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of large deformation pipeline girth weld Apparatus for Bending at low-temp and method thereof.
Technical purpose of the present utility model is achieved by following technical proposals:
Large deformation pipeline girth weld Apparatus for Bending at low-temp, including pedestal, fixed station, guide rail, rectification pressure head, bending pressure head, leading screw and hydraulic pusher, wherein:
Guide rail is arranged on the middle position of pedestal, is fixedly installed fixed station in the both sides of pedestal, is connected for being fixed by mounting flange with pipeline to be measured；Correct pressure head and bending pressure head is arranged in guide rail, and can move along guide rail, correct pressure head relative with the work surface of bending pressure head；One end of leading screw is fixing with bending pressure head to be connected, the other end is connected with correcting pressure head, and bending pressure head and the distance corrected between pressure head can be adjusted by correcting the feed screw nut outside pressure head, between two pressure heads, carry out Installation And Test adapting to the pipeline to be measured of different tube diameters；It is fixedly linked with the pushing ram of hydraulic pusher in the outside of bending pressure head.
In technique scheme, hydraulic pusher is connected with hydraulic controller.
In technique scheme, the work surface correcting pressure head is plane.
In technique scheme, the work surface of bending pressure head is convex surface, has different curvature radius, produces one or two contact positions with pipeline to be measured, to form or four-point bending at 3.
In technique scheme, it is fixedly linked, so that hydraulic thrust power can mean effort with the pushing ram of hydraulic pusher in the both sides of bending pressure head.
In technique scheme, the press head group being made up of bending pressure head and rectification pressure head, act on the middle position of pipeline to be measured.
In technique scheme, arranging scale on pedestal, scale is configured along the radial and axial of pipeline to be measured, to measure the amount of radially bending, bending pressure head and the travel distance of rectification pressure head when the length of pipeline to be measured, bend test.
When using, pipe diameter size according to pipeline to be measured, bending pressure head and the distance corrected between pressure head is adjusted by feed screw nut and leading screw, allow it to accommodate pipeline to be measured, and the work surface of bending pressure head contacts with pipeline to be measured, by mounting flange, the two ends of pipeline to be measured are fixedly linked with fixed station.Bending pressure head is promoted to advance, to realize the bending of pipeline to be measured by the pushing ram of hydraulic pusher again；After bend test, the stretching dry by promotion, so that bending pressure head retreats, utilizes rectification pressure head to treat test tube line and replys.In test process, by sensor acquisition hydraulic pressure signal, to obtain mechanical signal；Deformation signal is gathered by scale.
For further detection to pipeline girth weld bending crack, above-mentioned Apparatus for Bending at low-temp arranges acoustic emission system, including acoustic emission harvester, described acoustic emission harvester includes acoustic emission sensor, signal amplifier and acoustic emission data collecting card, wherein:
Described acoustic emission sensor gathers the acoustic emission elastic wave that produces in BENDING PROCESS of large deformation pipeline girth weld and is converted into voltage signal, output voltage signal to described signal amplifier afterwards and carry out signal amplification, the signal transmission exported through signal amplifier carries out signal numeral conversion to described acoustic emission data collecting card, the digital data transmission of acoustic emission data collecting card output is to computer, FEATURE PARAMETERS OF ACOUSTIC EMISSION extraction and analysis is carried out again by the Acoustic emission signal processing system arranged in a computer, waveform and spectrum analysis, the formation of crack positioning analysis of bending crack.
In technique scheme, signal transmission cable is used to carry out acoustic emission sensor, signal amplifier and the connection of acoustic emission data collecting card.
In technique scheme, in the both sides of pipeline girth weld, equidistant positional symmetry arranges acoustic emission sensor, being symmetrical arranged at preferred distance girth joint 1m and uniformly fix 3 acoustic emission probes along the pipeline hoop of every side, the circumferential distance of acoustic emission probe is 120 °.
In technique scheme, use magnetic clamp conventional in acoustic emission system to carry out the fixing of acoustic emission probe and pipeline, in order to reduce signal attenuation, between described acoustic emission sensor and test specimen, scribble couplant.
In technique scheme, acoustic emission sensor is consistent with the quantity of signal amplifier, acoustic emission data collecting card quantity is one, and the most each acoustic emission sensor uses independent signal amplifier to be amplified, and is then aggregated in an acoustic emission data collecting card.
When carrying out girth joint bend test, the girth joint of pipeline to be measured be positioned at bending pressure head middle position, and with bending pressure head work surface joint.
Both can have been realized by technique scheme mechanical signal, deformation signal in bend test, it is also possible to be acquired for acoustical signal and analyze.Compared with prior art, acoustic emission Dynamic Non-Destruction Measurement technology first Application is assessed by the application in on-line checking, the cracking degree of large deformation pipeline girth weld bending crack, source of damage location, it is achieved that on-line real-time measuremen and the purpose of assessment large deformation pipeline girth weld bending crack.
Accompanying drawing explanation
Fig. 1 is the structural representation (top view) of this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp, and wherein 1 is pedestal, and 2 is fixed station, and 3 is mounting flange, and 4 is pipeline to be measured, and 5 is guide rail, and 6 for correcting pressure head, and 7 is bending pressure head.
Fig. 2 is the structural representation (top view) of this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp, and wherein 1 is pedestal, and 5 is guide rail, 6 for correcting pressure head, and 7 is bending pressure head, and 8 is leading screw, 9 is pushing ram, and 10 is hydraulic pusher, and 11 is hydraulic controller.
Fig. 3 is the structural representation (side view) of this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp, and wherein 1 is pedestal, and 2 is fixed station, and 5 is guide rail, 6 for correcting pressure head, and 7 is bending pressure head, and 8 is leading screw, 9 is pushing ram, and 10 is hydraulic pusher, and 11 is hydraulic controller.
Fig. 4 is the laying schematic diagram (1) using acoustic emission probe in this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp.
Fig. 5 is the laying schematic diagram (2) using acoustic emission probe in this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp, and wherein 4 is pipeline to be measured, and 12 is acoustic emission probe.
Fig. 6 is that large deformation welded pipe line bending crack acoustic emission detection positions threedimensional model.
Fig. 7 is that large deformation welded pipe line bending crack acoustic emission detection positions two-dimensional development figure.
Fig. 8 is acoustic emission amplitude schematic diagram in large deformation welded pipe line BENDING PROCESS.
Fig. 9 is acoustic emission energy schematic diagram in large deformation welded pipe line BENDING PROCESS.
Figure 10 is acoustic emission virtual value RMS schematic diagram in large deformation welded pipe line BENDING PROCESS.
Figure 11 is acoustic emission signal intensity schematic diagram in large deformation welded pipe line BENDING PROCESS.
Figure 12 is the schematic three dimensional views of large deformation welded pipe line bending crack Acoustic Emission location result.
Figure 13 is the two-dimensional development figure of large deformation welded pipe line bending crack Acoustic Emission location result.
Detailed description of the invention
The technical solution of the utility model is further illustrated below in conjunction with specific embodiment.
Shown in attached Figure 13, this utility model large deformation pipeline girth weld Apparatus for Bending at low-temp, including pedestal, fixed station, guide rail, rectification pressure head, bending pressure head, leading screw and hydraulic pusher, wherein:
Guide rail is arranged on the middle position of pedestal, is fixedly installed fixed station in the both sides of pedestal, is connected for being fixed by mounting flange with pipeline to be measured；Correct pressure head and bending pressure head is arranged in guide rail, and can move along guide rail, correct pressure head relative with the work surface of bending pressure head；One end of leading screw is fixing with bending pressure head to be connected, the other end is connected with correcting pressure head, and bending pressure head and the distance corrected between pressure head can be adjusted by correcting the feed screw nut outside pressure head, between two pressure heads, carry out Installation And Test adapting to the pipeline to be measured of different tube diameters；It is fixedly linked with the pushing ram of hydraulic pusher in the outside of bending pressure head.
In technique scheme, hydraulic pusher is connected with hydraulic controller.
In technique scheme, the work surface correcting pressure head is plane.
In technique scheme, the work surface of bending pressure head is convex surface, has different curvature radius, produces one or two contact positions with pipeline to be measured, to form or four-point bending at 3.
In technique scheme, it is fixedly linked, so that hydraulic thrust power can mean effort with the pushing ram of hydraulic pusher in the both sides of bending pressure head.
In technique scheme, the press head group being made up of bending pressure head and rectification pressure head, act on the middle position of pipeline to be measured.
In technique scheme, arranging scale on pedestal, scale is configured along the radial and axial of pipeline to be measured, to measure the amount of radially bending, bending pressure head and the travel distance of rectification pressure head when the length of pipeline to be measured, bend test.
When using, pipe diameter size according to pipeline to be measured, bending pressure head and the distance corrected between pressure head is adjusted by feed screw nut and leading screw, allow it to accommodate pipeline to be measured, and the work surface of bending pressure head contacts with pipeline to be measured, by mounting flange, the two ends of pipeline to be measured are fixedly linked with fixed station.Bending pressure head is promoted to advance by the pushing ram of hydraulic pusher again, to realize the bending (producing the Bending Deformation of 1 4%) of pipeline to be measured；After bend test, the stretching dry by promotion, so that bending pressure head retreats, utilizes rectification pressure head to treat test tube line and replys.In test process, by sensor acquisition hydraulic pressure signal, to obtain mechanical signal；Deformation signal is gathered by scale.
For further detection to pipeline girth weld bending crack, above-mentioned Apparatus for Bending at low-temp arranges acoustic emission system, including the acoustic emission harvester in clematis stem road, the acoustic emission harvester in described clematis stem road includes acoustic emission sensor, signal amplifier and acoustic emission data collecting card, wherein:
Described acoustic emission sensor gathers the acoustic emission elastic wave that produces in BENDING PROCESS of large deformation pipeline girth weld and is converted into voltage signal, output voltage signal to described signal amplifier afterwards and carry out signal amplification, the signal transmission exported through signal amplifier carries out signal numeral conversion to described acoustic emission data collecting card, the digital data transmission of acoustic emission data collecting card output is to computer, FEATURE PARAMETERS OF ACOUSTIC EMISSION extraction and analysis is carried out again by the Acoustic emission signal processing system arranged in a computer, waveform and spectrum analysis, the formation of crack positioning analysis of bending crack.
In technique scheme, signal transmission cable is used to carry out acoustic emission sensor, signal amplifier and the connection of acoustic emission data collecting card.
In technique scheme, in the both sides of pipeline girth weld, equidistant positional symmetry arranges acoustic emission sensor, being symmetrical arranged at preferred distance girth joint 1m and uniformly fix 3 acoustic emission probes along the pipeline hoop of every side, the circumferential distance of acoustic emission probe is 120 °.
In technique scheme, use magnetic clamp conventional in acoustic emission system to carry out the fixing of acoustic emission probe and pipeline, in order to reduce signal attenuation, between described acoustic emission sensor and test specimen, scribble couplant.
In technique scheme, acoustic emission sensor is consistent with the quantity of signal amplifier, acoustic emission data collecting card quantity is one, and the most each acoustic emission sensor uses independent signal amplifier to be amplified, and is then aggregated in an acoustic emission data collecting card.
When carrying out girth joint bend test, the girth joint of pipeline to be measured be positioned at bending pressure head middle position, and with bending pressure head work surface joint.
Both can have been realized by technique scheme mechanical signal, deformation signal in bend test, it is also possible to be acquired for acoustical signal and analyze:
(1) acoustic emission sensor is arranged: use magnetic clamp by the both sides (rang ring weld seam 1m) being fixed on pipeline girth weld equidistant for acoustic emission sensor, pipeline hoop along every side uniformly fixes 3 acoustic emission probes, the circumferential distance of acoustic emission probe is 120 °, in order to reduce signal attenuation, between described acoustic emission sensor and test specimen, scribble couplant.
(2) acoustic emission sensor sensitivity test: carry out disconnected lead test in the position near acoustic emission sensor, it is ensured that the acoustic emission signal amplitude that acoustic emission sensor receives reaches more than 90dB.
(3) acoustic emission detection parameter is arranged: arranging signal amplifier amplification is 40dB, sample frequency 2MSPS, threshold value is 45dB, additionally, it is also based on environment noise to arrange optimal digital filtering scope and be filtered, the present embodiment wouldn't be configured.
(4) set up Acoustic Emission location model: owing to large deformation pipeline wall thickness is within the scope of 2-20mm, the hoop girth of wall ratio pipeline and duct length are much smaller, belong to little wall thickness pipeline, therefore select two dimensional surface station-keeping mode；In acoustic emission detection system, set up pipeline model, and on pipeline model, arrange acoustic emission sensor, it is ensured that the pipeline model size of foundation and the position of acoustic emission sensor are consistent with practical situation.The most as shown in drawings, centre position is weld seam for large deformation welded pipe line bending crack acoustic emission detection location threedimensional model and two-dimensional development model, indicates the position that position is acoustic emission sensor of the point of numeral.
(5) acoustic emission signal spread speed calculates: select two acoustic emission sensors farther out, such as No. 1 sensor and No. 4 sensors or No. 2 sensors and No. 5 sensors or No. 3 sensors and No. 6 sensors in accompanying drawing, by below equation break lead stamp intend formation of crack test the velocity of sound, carry out 10 tests, calculate meansigma methods and input acoustic emission system.
Wherein, S (m) is transducer spacing from, 2000mm；V (m/s) is acoustic emission signal spread speed in the duct；T (s) is that acoustic emission signal arrives the time of another sensor from a sensor.Result shows, the mean propagation velocity of the acoustic emission signal of pipe line steel X65 is 4492mm/s.
(6) large deformation pipeline girth weld bending crack on-line checking: girth joint is applied bending load, and online real time collecting also analyzes the acoustic emission signal in whole BENDING PROCESS.Dehiscence process is monitored in real time and cracking degree is estimated based on characteristics of Acoustic Emission parameter such as amplitude, energy, virtual value RMS, signal intensity, as shown in accompanying drawing 8-11.FEATURE PARAMETERS OF ACOUSTIC EMISSION can indicate in real time large deformation pipeline girth weld during bending crack play plastic deformation process, bending crack germinating initial time and cracks can spread until fracture overall process.The generally size of acoustic emission signal amplitude can reflect the degree of cracking.When acoustic emission signal amplitude is less than 65dB, pipeline girth weld occurs significantly to play plastic deformation；When acoustic emission signal amplitude occurs drastically to suddenly change and during more than 70dB, and crackle starts germinating and extends；When acoustic emission signal amplitude continues to exceed 85dB, instable growth of crack, there is serious fracture in indication.
(7) position monitor of large deformation pipeline girth weld bending crack.
Pipeline girth weld in BENDING PROCESS the Acoustic Emission location result of crack initiation and propagation as illustrated by figs. 12-13, the instruction of the anchor point of arrow indication is the position that is likely to occur of crackle.Can be seen that crackle is distributed mainly on the girth joint of pipeline and bears the position of maximum deflection tension, this is consistent with the result of finite element stress analysis.The slit region of Acoustic Emission location cuts and carries out Magnetic testing and high power light detection afterwards, so that Acoustic Emission location result to be rechecked.Substantial amounts of test result indicate that, have been found that substantial amounts of crackle in the region of Acoustic Emission location crackle, and the region beyond acoustic emission crackle anchor point does not find crackle.Therefore, it is feasible for based on acoustic emission, large deformation pipeline girth weld bending crack being carried out on-line real-time measuremen with cracking location.
Compared with prior art, acoustic emission Dynamic Non-Destruction Measurement technology first Application is assessed by the application in on-line checking, the cracking degree of large deformation pipeline girth weld bending crack, source of damage location, achieving on-line real-time measuremen and the purpose of assessment large deformation pipeline girth weld bending crack, its effect specifically includes following aspects:
1. achieve the purpose of detection large deformation pipeline girth weld bending crack online, dynamic, real-time, without termination test process during whole detection.
2., by setting up the mapping relations of acoustic emission signal and crack initiation and propagation size, contribute to solving the problem of acoustic emission signal qualitative assessment bending crack degree, establish excellent basis for acoustic emission online evaluation bending crack degree.
Do not limited by tested pipeline material, metal material, ceramic material, composite, macromolecular material etc. can be detected.
4. can use at severe complicated working condition, if operator safety, suitable in the environment of remote control.
5, detecting automatic degree high, simple to operate, detection efficiency is higher, and labor intensity can be greatly reduced.
6, the power consumption of this detection equipment is low, easy to carry, it is simple to the detection of operation field.
Above this utility model has been done exemplary description; should be noted that; in the case of without departing from core of the present utility model, any simple deformation, amendment or other those skilled in the art can not spend the equivalent of creative work to each fall within protection domain of the present utility model.
Claims (9)
1. large deformation pipeline girth weld Apparatus for Bending at low-temp, it is characterised in that include pedestal, fixed station, guide rail, rectification pressure head, bending pressure head, leading screw and hydraulic pusher, wherein:
Guide rail is arranged on the middle position of pedestal, is fixedly installed fixed station in the both sides of pedestal, is connected for being fixed by mounting flange with pipeline to be measured；Correct pressure head and bending pressure head is arranged in guide rail, correct pressure head relative with the work surface of bending pressure head；One end of leading screw is fixing with bending pressure head to be connected, and the other end is connected with correcting pressure head；It is fixedly linked with the pushing ram of hydraulic pusher in the outside of bending pressure head；Hydraulic pusher is connected with hydraulic controller.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 1, it is characterised in that arranging scale on pedestal, scale is configured along the radial and axial of pipeline to be measured.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 1, it is characterized in that, the work surface correcting pressure head is plane, and the work surface of bending pressure head is convex surface, bending pressure head and the press head group of rectification pressure head composition, act on the middle position of pipeline to be measured.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 1, it is characterised in that be fixedly linked with the pushing ram of hydraulic pusher in the both sides of bending pressure head.
5. according to the large deformation pipeline girth weld Apparatus for Bending at low-temp one of claim 14 Suo Shu, it is characterized in that, described Apparatus for Bending at low-temp arranges acoustic emission system, including acoustic emission harvester, described acoustic emission harvester includes acoustic emission sensor, signal amplifier and acoustic emission data collecting card, wherein:
Described acoustic emission sensor gathers the acoustic emission elastic wave that produces in BENDING PROCESS of large deformation pipeline girth weld and is converted into voltage signal, output voltage signal to described signal amplifier afterwards and carry out signal amplification, signal transmission to the described acoustic emission data collecting card exported through signal amplifier carries out signal numeral conversion, and the digital data transmission of acoustic emission data collecting card output is to computer.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 5, it is characterised in that use signal transmission cable to carry out acoustic emission sensor, signal amplifier and the connection of acoustic emission data collecting card.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 5, it is characterised in that equidistant positional symmetry arranges acoustic emission sensor in the both sides of pipeline girth weld.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 7, it is characterised in that being symmetrical arranged at rang ring weld seam 1m and uniformly fix 3 acoustic emission probes along the pipeline hoop of every side, the circumferential distance of acoustic emission probe is 120 °.
Large deformation pipeline girth weld Apparatus for Bending at low-temp the most according to claim 5, it is characterised in that acoustic emission sensor is consistent with the quantity of signal amplifier, acoustic emission data collecting card quantity is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016583.1U CN205483839U (en) | 2016-01-05 | 2016-01-05 | Big converting pipe says that circumferential weld bending test is quick -witted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016583.1U CN205483839U (en) | 2016-01-05 | 2016-01-05 | Big converting pipe says that circumferential weld bending test is quick -witted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205483839U true CN205483839U (en) | 2016-08-17 |
Family
ID=56664176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620016583.1U Expired - Fee Related CN205483839U (en) | 2016-01-05 | 2016-01-05 | Big converting pipe says that circumferential weld bending test is quick -witted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205483839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020269A (en) * | 2018-01-30 | 2018-05-11 | 吉林大学 | A kind of acoustic emission test device detected for axial workpiece bending crack with fracture |
-
2016
- 2016-01-05 CN CN201620016583.1U patent/CN205483839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020269A (en) * | 2018-01-30 | 2018-05-11 | 吉林大学 | A kind of acoustic emission test device detected for axial workpiece bending crack with fracture |
| CN108020269B (en) * | 2018-01-30 | 2023-09-29 | 吉林大学 | Acoustic emission testing device for detecting bending cracks and fractures of shaft parts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105424502B (en) | Large-deformation pipeline circumferential weld bending tester and method thereof | |
| KR102417558B1 (en) | Detection and Monitoring of Changes in Metal Structures Using Multimode Acoustic Signals | |
| CN102537669B (en) | Method and system for detecting pipeline defect based on ultrasonic guided wave focusing | |
| CN104965023B (en) | Multi-modal guided wave industrial pipeline diagnostic method | |
| CN103760243A (en) | Microcrack nondestructive detecting device and method | |
| CN109357645B (en) | Movable ultrasonic wave return bend thickness measuring device | |
| CN103940908B (en) | Based on DBSCAN and the supersonic detection device of cross correlation algorithm and method | |
| CN204154684U (en) | Bridge prestress pipeline compactness of grouting detector | |
| CN103353479A (en) | Electromagnetic ultrasonic longitudinal guided wave and magnetic leakage detection compounded detection method | |
| CN103926324B (en) | A kind of ultrasonic surface wave detects the method for live steam piping creep impairment | |
| CN101539540B (en) | Ultrasonic guided wave testing method of corrosion of partially implanted pole body of steel pipe pole | |
| CN106680380A (en) | System for nondestructive detection on defects of prestress steel strand through ultrasonic guided waves and detection method | |
| CN104880510B (en) | Guided wave detecting method and device are twisted and warped using the spiral welded pipe of spiral transduction device | |
| CN104359979A (en) | Method for detecting interlamination transverse cracks of carbon steel/aluminum explosion composite pipe | |
| CN104374651A (en) | Device and method for detecting transformer substation post insulator strength | |
| CN114813949A (en) | Ultrasonic guided wave pipeline damage scanning device and detection method based on limited sensor group | |
| CN205483839U (en) | Big converting pipe says that circumferential weld bending test is quick -witted | |
| CN105372328B (en) | A kind of detection device and detection method | |
| CN202152923U (en) | Pipeline defect detecting system based on ultrasonic guided wave focusing | |
| CN104165927A (en) | An on-site detection method of pressure welding positioning defects for a strain clamp | |
| CN103713054A (en) | Guide wave characteristic signal extraction method for near weld zone defect of pipeline | |
| CN203745428U (en) | Micro-crack nondestructive testing device | |
| CN1258078C (en) | Nondestructive pressure testing method and its device based on Rayleigh surface wave | |
| CN110907076B (en) | Method for detecting uniform hoop restraining force of circular steel tube concrete column in real time by ultrasonic waves | |
| CN203758970U (en) | Device for testing performance of ultrasonic arrayed probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190105 |