CN205538843U - High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe - Google Patents
High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe Download PDFInfo
- Publication number
- CN205538843U CN205538843U CN201620077776.8U CN201620077776U CN205538843U CN 205538843 U CN205538843 U CN 205538843U CN 201620077776 U CN201620077776 U CN 201620077776U CN 205538843 U CN205538843 U CN 205538843U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic acoustic
- coil
- impulse mgnet
- high temperature
- temperature resistant
- 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.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a high temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe, including shell, pulsed electromagnetic iron and electromagnetic acoustic coil, the shell has a closing inner cavity, and its inner chamber both sides are equipped with water inlet and delivery port respectively, pulsed electromagnetic iron and electromagnetic acoustic coil seal casedly, the direction of the magnetic poles below that the electromagnetic acoustic coil is close to pulsed electromagnetic iron sets up, wherein form water circulation canal between pulsed electromagnetic iron and the shell inner wall, the electromagnetic acoustic coil sets up the sealed intracavity at the shell bottom. The utility model discloses a different electromagnet structure of design can realize that shear wave, compressional wave detect, has obtained the promotion to the detectability of defect, simultaneously can also be at high temperature, the enterprising president detection time of large -scale ferromagnetism forging, be applied to the manufacturing in -process of large forgings, and can detect out the manufacturing defect under the hot condition, guarantee large forgings refabrication in time, reduction manufacturing cost.
Description
Technical field
The utility model belongs to electromagnetic ultrasonic wave detection technique field, is specifically related to a kind of high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe.
Background technology
Electromagnetic acoustic detection results from the sixties in 20th century, compared to traditional piezoelectric supersonic detection technique, it has the outstanding features such as contactless property, the feature of environmental protection and stronger environmental suitability, thus be developed rapidly in recent years, have been widely used for sheet metal, tubing thickness measuring, Defect detection, multiple fields such as on-line checking.nullThe core of electromagnetic acoustic detection is electromagnet ultrasonic changer，General by magnet，Excite、Receive coil，Tested sample 3 part forms，In nonferromugnetic material，Electromagnetic acoustic is mainly actuated to main with Lorentz force，Transducer winding is passed through high frequency、Powerful electric current，It produces inside tested sample and flows to contrary eddy current of inducting therewith，Now be equivalent to have electric current to flow through in the collection skin layers of tested sample，Static magnetic field produces Lorentz force with vortex interaction of inducting，Owing to eddy current of inducting is high frequency change，The Lorentz force produced for this produces on the surface of sample，In test specimen, particle produces dither under force，This vibration produces with ultrasound modalities and internally propagates，During reception，According to Faraday's electromagnetic induction law，In the case of there is bias magnetic field，To induct alternating electric field owing to ultrasonic vibration receives coil，The detection of sample is carried out by the voltage signal of detection alternating electric field.
Traditional piezoelectric supersonic detection technique needs couplant, it is impossible to detect in the case of a high temperature；Presently disclosed high temperature resistant electromagnet ultrasonic changer is provided bias magnetic field by permanent magnet, can preferably complete detection, but be applied in ferrimagnet, owing to magnetic force causes electromagnet ultrasonic changer to move difficulty, be unfavorable for on-line checking in nonferromugnetic material.
The additionally electromagnet ultrasonic changer of impulse mgnet formula, produces magnetic field only with solenoid coil, and coil electricity electric current is big, and heating is serious, can only detect the short time, there is limitation.
Scholar is had to study in terms of several currently for electromagnetic acoustic detection technique, the such as Chinese invention patent of Application No. 200910073192.8, disclose a kind of electromagnet ultrasonic changer utilizing impulse mgnet to provide bias magnetic field, this impulse mgnet is made up of skeleton and coil, and designs impulse mgnet drive circuit.Use solenoid coil coiling form by coil winding on skeleton, when starting working, drive circuit provides high voltage for coil, big electric current and then generation bias magnetic field, simultaneously under the control of main frame, after stable magnetic field, electromagnetic acoustic main frame produces high frequency electric in electromagnetic acoustic coil, produces the ultrasonic wave of vertical incidence under the effect of bias magnetic field.But the impulse mgnet of this form is owing to simply using the coiling form of solenoid coil, stronger magnetic field can only be produced in y direction, thus shear wave can only be produced, relative to conventional piezoelectric ultrasound detection can carry out compressional wave and shear wave detection, the electromagnetic acoustic detection mode of this kind of impulse mgnet formula is used to there is certain limitation；And owing to the coil of disclosed this impulse mgnet needs logical super-high-current, detect for a long time, heating can be quite serious, and the most this form can not carry out electromagnetic acoustic detection for a long time, more can not at high temperature detect.
The most such as license number is the Chinese utility model patent of CN 203479275 U, disclose a kind of high-temperature electromagnetic ultrasonic thickness measuring probe, this probe is divided into inner housing and shell body two-layer, permanent magnet and high frequency coil are installed in inner housing, high frequency coil is in the lower section of permanent magnet, is connected by adhesive between high frequency coil with permanent magnet；Socket is arranged on inner housing top, and high frequency coil is electrically connected with socket by lead-in wire, fills flame-retardant insulating material, it is achieved detection at high temperature in inner housing simultaneously.Use this kind of method in nonferromugnetic material owing to need not couplant, probe designs is filled flame-retardant insulating material and is capable of high-temperature pipe thickness measuring；But this device is in ferrimagnet, due to the magnetic force of permanent magnet, the mobile difficulty of probe can be made, be unfavorable for measuring.
Utility model content
The utility model solves the technical problem that and is: the drawbacks described above existed for existing electromagnetic acoustic detection technique, it is provided that a kind of be adapted to the high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe at high temperature ferromagnetism material.
The utility model adopts the following technical scheme that realization:
A kind of high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, including shell 1, impulse mgnet 7 and electromagnetic acoustic coil 8；
Described shell 1 has a closing inner chamber, and its inner chamber is respectively provided on two sides with water inlet 2 and delivery port 5；
Described impulse mgnet 7 and electromagnetic acoustic coil 8 are fixed and are encapsulated in shell 1, described electromagnetic acoustic coil 8 is arranged below the pole orientation of impulse mgnet 7, forming water circulation channel 6 between described impulse mgnet 7 and outer casing inner wall, described electromagnetic acoustic coil 8 is arranged in an annular seal space 3 of shell bottom.
Further, described impulse mgnet 7 uses E type electromagnet and c-type electromagnet to carry out compressional wave detection respectively and shear wave detects.
Further, described impulse mgnet 7 includes silicon steel sheet 71, support 72 and coil 72, and described coil 72 is by support 72 on the iron core of silicon steel sheet 71 closed assembly being contained in E type or c-type, and described coil 72 electrically connects with the pulse power 10 of housing exterior.
Further, described electromagnetic acoustic coil 8 electrically connects with the electromagnetic acoustic power supply 11 of housing exterior.
Further, the described pulse power 10 and electromagnetic acoustic power supply 11 are all connected with main frame 12, control detection probe and work and receive display detectable signal.
In the utility model, the employing ceramic wafer 4 bottom the annular seal space 3 of described electromagnetic acoustic coil seals.
Impulse mgnet of the present utility model uses iron core to be combined the scheme producing bias magnetic field with coil, stronger magnetic field can be produced in the case of relatively small electric current, simultaneously when impulse mgnet designs, the geometry of impulse mgnet can be determined according to different test format (shear wave detection and compressional wave detect), and carry out structure optimization according to magnetic field index, the bias magnetic field making generation is more preferable relative to the permanent magnet uniformity, strengthens the signal to noise ratio of signal.
The working forms of the pulse power of the present utility model ensures electromagnet ultrasonic changer operating efficiency, and detecting 1 required time is ms rank, and relative to the charge/discharge operation form in document record, there is significant increase the time that detecting needs second rank 1 time.
The prominent long-time detection in the case of a high temperature of the utility model, high temperature resistant transformation is carried out first against in common enamel-covered wire, enamelled wire surface at impulse mgnet carries out high-temperature material insulation, and when coiling electromagnet, every layer line circle uses exotic material to cover equally；When being energized work, in the inner chamber of shell, design water circulation system cools down, and reduces impulse mgnet temperature rise, it is ensured that electromagnet ultrasonic changer can be able to work long hours under the high temperature of about 400 DEG C, meets the requirement of on-line checking.
From the above mentioned, the utility model has the advantages that the utility model is capable of shear wave, compressional wave detection by designing different electromagnet structures, detectability for test specimen defect is improved, can also detect for a long time on high temperature, Large Fe magnetic forging simultaneously, during being applied to the processing and manufacturing of large forgings, the manufacturing defect of test specimen can be detected in the case of hot, it is ensured that large forgings can remanufacture in time, reduce manufacturing cost.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the electromagnetic acoustic non-destructive control probe in embodiment.
Fig. 2 a is the E type impulse mgnet structural representation in embodiment.
Fig. 2 b is the c-type impulse mgnet structural representation in embodiment.
Fig. 3 is the operating diagram of the electromagnetic acoustic non-destructive control probe in embodiment.
Fig. 4 is the pulse power external trigger sequential chart during electromagnetic acoustic non-destructive control probe work in embodiment.
Label in figure: 1-shell, 2-water inlet, 3-annular seal space, 4-ceramic wafer, 5-delivery port, 6-water circulation channel, 7-impulse mgnet, 71-silicon steel sheet, 72-support, 73-coil, 8-electromagnetic acoustic coil, 9-test specimen, the 10-pulse power, 11-electromagnetic acoustic power supply, 12-main frame.
Detailed description of the invention
Embodiment
See Fig. 1, this apparatus structure includes shell 1, impulse mgnet 7, electromagnetic acoustic coil 8, the pulse power 10, electromagnetic acoustic power supply 11, main frame 12 etc., wherein probe body is a shell 1 with sealing inner chamber, the inner chamber of shell 1 is respectively provided on two sides with water inlet 2 and delivery port 5, can be passed through cooling water and form water cooling system in shell；Impulse mgnet 7 and electromagnetic acoustic coil 8 are encapsulated in shell 1, electromagnetic acoustic coil 8 is arranged below the pole orientation of impulse mgnet 7, water circulation channel 6 is formed between wherein said impulse mgnet 7 and outer casing inner wall, the parts such as the water pump with the water inlet 2 of shell and delivery port 5 and external connection form cooling water recirculation system, the cooling water circulated is by the hot environment isolation of impulse mgnet 7 with detection test specimen place, reduce the high temperature impact on electromagnet, electromagnetic acoustic coil 8 is arranged in an annular seal space 3 of shell bottom, employing ceramic wafer 4 bottom the annular seal space 3 of electromagnetic acoustic coil seals.
As shown in Figure 2 a and 2 b, impulse mgnet 7 uses E type electromagnet and c-type electromagnet to carry out compressional wave detection respectively and shear wave detects, impulse mgnet 7 includes silicon steel sheet 71, support 72 and coil 73, coil 73 passes through support 72 on the iron core of silicon steel sheet 71 closed assembly being contained in E type or c-type, coil 73 electrically connects with the pulse power 10 of housing exterior, electromagnetic acoustic coil 8 includes ultrasonic excitation, receives coil, is electrically connected with the electromagnetic acoustic power supply 11 of housing exterior by holding wire respectively.
First according to testing requirement, c-type silicon steel sheet is used during compressional wave detection, E type silicon steel sheet is used during shear wave detection, use physical dimension and the superposition thickness of two kinds of form silicon steel sheets of method for designing Preliminary design of alternating electromagnet, use optimized algorithm to combine Finite Element Method further magnetic circuit is optimized, ensure size and the uniformity of magnetic induction intensity, finally determine the physical dimension of impulse mgnet and the coiling number of turn of coil and electrical current；Then according to determining that coil parameter carries out the coiling of impulse mgnet, carry out impedance matching according to the impulse mgnet of coiling simultaneously, ensure the maximum delivery efficiency of the pulse power, support is exotic material, during coil winding, Surface mulch exotic material insulate, and is finally assembled in the enclosure by impulse mgnet.Shell inner cavity design water circulation path, utilizes water-cooled cooling during work.
In conjunction with seeing Fig. 3 and Fig. 4, the present embodiment is operationally, by the electromagnetic acoustic coil bottom probe towards near test specimen 9 surface, impulse mgnet 7, electromagnetic acoustic coil 8, test specimen 9 form electromagnet ultrasonic changer, the pulse power 10 and electromagnetic acoustic power supply 11 are all connected with main frame 12, control impulse mgnet and the electromagnetic acoustic coil working of detection probe respectively, receive simultaneously and show test specimen 9 detectable signal.Signal is sent by main frame, the pulse power receives signal, it is operated according to the pulse power sequential chart shown in Fig. 4, a triggering signal that () provides for outside, when the pulse power receive trigger signal (a), immediately or time delay (ms rank) output setting power signal (b)；The pulse power main output (b) the output time delay t0 time, i.e. after voltage stabilization, output signal (c)；Signal (c) is in the pulse width time of the main output (b) of the pulse power, with the cycle for t1 repeated trigger, until signal (b) transfers trailing edge to, trigger signal within the effective time of the main output (b) of the pulse power, the high temperature resistant coil electricity stream of impulse mgnet, rapidly magnetic core is magnetized, produce the bias magnetic field of sufficient intensity, now ultrasonic excitation, reception coil working obtain ultrasonic signal, carrying out data acquisition by the capture card of triggering signal (c) output to main frame, the time length of t1 determines the number of times gathering data.Operationally, the water inlet of shell and delivery port always to keep cool down water circulate work, as in the previous shown in Fig. 1, impulse mgnet 7 is packaged in shell 1, electromagnetic acoustic coil is positioned in annular seal space 3, and electromagnetic acoustic coil bottom uses ceramic wafer 4 to seal, and water enters from water inlet 2, discharge from delivery port 5, shell inner cavity temperature is cooled down.
Embodiment above describes general principle of the present utility model and principal character and advantage of the present utility model, skilled person will appreciate that of the industry, the utility model is not restricted to the described embodiments, described in above-described embodiment and specification, specific works principle of the present utility model is simply described, on the premise of without departing from the utility model spirit and scope, the utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed the utility model, the utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (6)
1. a high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, it is characterised in that: include shell (1), impulse mgnet (7) and electromagnetic acoustic coil (8)；
Described shell (1) has a closing inner chamber, and its inner chamber is respectively provided on two sides with water inlet (2) and delivery port (5)；
Described impulse mgnet (7) and electromagnetic acoustic coil (8) are fixed and are encapsulated in shell (1), described electromagnetic acoustic coil (8) is arranged below the pole orientation of impulse mgnet (7), forming water circulation channel (6) between described impulse mgnet (7) and outer casing inner wall, described electromagnetic acoustic coil (8) is arranged in an annular seal space (3) of shell bottom.
One the most according to claim 1 is high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, described impulse mgnet (7) uses E type electromagnet and c-type electromagnet to carry out compressional wave detection respectively and shear wave detects.
One the most according to claim 2 is high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, described impulse mgnet (7) includes silicon steel sheet (71), support (72) and coil (73), described coil (73) is by support (72) on the iron core of silicon steel sheet (71) closed assembly being contained in E type or c-type, and described coil (73) electrically connects with the pulse power (10) of housing exterior.
One the most according to claim 3 is high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, described electromagnetic acoustic coil (8) electrically connects with the electromagnetic acoustic power supply (11) of housing exterior.
One the most according to claim 4 is high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe, the described pulse power (10) and electromagnetic acoustic power supply (11) are all connected with main frame (12), control detection probe and work and receive display detectable signal.
6., according to the high temperature resistant impulse mgnet formula electromagnetic acoustic non-destructive control probe of the one according to any one of claim 1-5, the employing ceramic wafer (4) of annular seal space (3) bottom of described electromagnetic acoustic coil seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077776.8U CN205538843U (en) | 2016-01-27 | 2016-01-27 | High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620077776.8U CN205538843U (en) | 2016-01-27 | 2016-01-27 | High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538843U true CN205538843U (en) | 2016-08-31 |
Family
ID=56770822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620077776.8U Active CN205538843U (en) | 2016-01-27 | 2016-01-27 | High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538843U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084692A (en) * | 2017-06-30 | 2017-08-22 | 沈阳工业大学 | Electromagnetic acoustic shear wave thickness measuring transducer |
| CN107132283A (en) * | 2017-06-30 | 2017-09-05 | 沈阳工业大学 | A kind of p-wave model electromagnetic acoustic pipeline detection spiral wave guide energy converter |
| CN107179353A (en) * | 2017-07-12 | 2017-09-19 | 河北工业大学 | The metallic plate sonoelastic coefficient on-line measurement system loaded based on electromagnetism |
| CN108562652A (en) * | 2018-04-04 | 2018-09-21 | 河海大学常州校区 | A kind of sliceable underwater works detection array ultrasonic probe |
| CN108872401A (en) * | 2018-08-27 | 2018-11-23 | 中南大学 | A kind of electromagnetic acoustic shear wave transducer resistant to high temperatures, wear-resisting and preparation method thereof |
| CN109374733A (en) * | 2018-09-14 | 2019-02-22 | 哈尔滨理工大学 | A kind of electromagnetic ultrasonic Lamb wave fault detection system and detection method |
| CN109425376A (en) * | 2017-09-01 | 2019-03-05 | 中国特种设备检测研究院 | Electromagnetic ultrasonic transducer |
| CN110045020A (en) * | 2019-05-14 | 2019-07-23 | 山东省科学院激光研究所 | A kind of electromagnet ultrasonic changer and test macro |
| CN110530978A (en) * | 2019-08-27 | 2019-12-03 | 南昌航空大学 | High temperature forge piece persistently detects electromagnetic ultrasonic probe, failure detector and method of detection |
| CN113027161A (en) * | 2021-03-05 | 2021-06-25 | 三峡大学 | Building crack repairing device and using method |
| CN113848251A (en) * | 2021-09-27 | 2021-12-28 | 南昌航空大学 | Online detection probe, system and method for ultrahigh-temperature ferromagnetic metal casting and forging |
| CN113866265A (en) * | 2021-08-20 | 2021-12-31 | 北京工业大学 | Electromagnet type transverse wave electromagnetic acoustic transducer |
| CN114371221A (en) * | 2022-01-10 | 2022-04-19 | 哈尔滨工业大学 | Electromagnetic ultrasonic transducer with ultra-high temperature resistant double-coil structure |
-
2016
- 2016-01-27 CN CN201620077776.8U patent/CN205538843U/en active Active
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132283B (en) * | 2017-06-30 | 2023-05-12 | 沈阳工业大学 | Longitudinal wave mode electromagnetic ultrasonic pipeline internal detection spiral guided wave transducer |
| CN107132283A (en) * | 2017-06-30 | 2017-09-05 | 沈阳工业大学 | A kind of p-wave model electromagnetic acoustic pipeline detection spiral wave guide energy converter |
| CN107084692A (en) * | 2017-06-30 | 2017-08-22 | 沈阳工业大学 | Electromagnetic acoustic shear wave thickness measuring transducer |
| CN107179353A (en) * | 2017-07-12 | 2017-09-19 | 河北工业大学 | The metallic plate sonoelastic coefficient on-line measurement system loaded based on electromagnetism |
| CN107179353B (en) * | 2017-07-12 | 2024-03-19 | 河北工业大学 | Metal plate acoustic elasticity coefficient on-line measuring system based on electromagnetic loading |
| CN109425376A (en) * | 2017-09-01 | 2019-03-05 | 中国特种设备检测研究院 | Electromagnetic ultrasonic transducer |
| CN108562652A (en) * | 2018-04-04 | 2018-09-21 | 河海大学常州校区 | A kind of sliceable underwater works detection array ultrasonic probe |
| CN108872401A (en) * | 2018-08-27 | 2018-11-23 | 中南大学 | A kind of electromagnetic acoustic shear wave transducer resistant to high temperatures, wear-resisting and preparation method thereof |
| CN108872401B (en) * | 2018-08-27 | 2023-11-10 | 中南大学 | High-temperature-resistant and wear-resistant electromagnetic ultrasonic transverse wave transducer and manufacturing method thereof |
| CN109374733A (en) * | 2018-09-14 | 2019-02-22 | 哈尔滨理工大学 | A kind of electromagnetic ultrasonic Lamb wave fault detection system and detection method |
| CN110045020A (en) * | 2019-05-14 | 2019-07-23 | 山东省科学院激光研究所 | A kind of electromagnet ultrasonic changer and test macro |
| CN110530978A (en) * | 2019-08-27 | 2019-12-03 | 南昌航空大学 | High temperature forge piece persistently detects electromagnetic ultrasonic probe, failure detector and method of detection |
| CN110530978B (en) * | 2019-08-27 | 2022-06-21 | 南昌航空大学 | Electromagnetic ultrasonic probe, flaw detection device and flaw detection method for continuous detection of high-temperature casting and forging |
| CN113027161A (en) * | 2021-03-05 | 2021-06-25 | 三峡大学 | Building crack repairing device and using method |
| CN113866265A (en) * | 2021-08-20 | 2021-12-31 | 北京工业大学 | Electromagnet type transverse wave electromagnetic acoustic transducer |
| CN113848251B (en) * | 2021-09-27 | 2023-06-16 | 南昌航空大学 | Online detection probe, system and method for ultrahigh-temperature ferromagnetic metal cast forging |
| CN113848251A (en) * | 2021-09-27 | 2021-12-28 | 南昌航空大学 | Online detection probe, system and method for ultrahigh-temperature ferromagnetic metal casting and forging |
| CN114371221A (en) * | 2022-01-10 | 2022-04-19 | 哈尔滨工业大学 | Electromagnetic ultrasonic transducer with ultra-high temperature resistant double-coil structure |
| CN114371221B (en) * | 2022-01-10 | 2023-10-03 | 哈尔滨工业大学 | Electromagnetic ultrasonic transducer with ultra-high temperature resistant double-coil structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205538843U (en) | High temperature resistant pulsed electromagnetic iron formula electromagnetic acoustic nondestructive test probe | |
| CN110530978A (en) | High temperature forge piece persistently detects electromagnetic ultrasonic probe, failure detector and method of detection | |
| JP5129566B2 (en) | Flexible electromagnetic acoustic transducer sensor | |
| Xie et al. | A novel magnetic force transmission eddy current array probe and its application for nondestructive testing of defects in pipeline structures | |
| CN105181791B (en) | A kind of volume defect lossless detection method being combined based on impulse eddy current and electromagnetic acoustic | |
| CN105758938A (en) | 550-DEG C high-temperature metal material electromagnetic ultrasonic flaw detection method and device | |
| CN107505388A (en) | A kind of flexible magnetic saturation Pulsed eddy current testing probe and detection method | |
| Zhai et al. | High-temperature EMAT with double-coil configuration generates shear and longitudinal wave modes in paramagnetic steel | |
| CN109444270B (en) | Electromagnetic ultrasonic and pulse eddy current composite detection sensor | |
| CN110514743A (en) | A kind of electromagnetic supersonic flaw detecting method and device of pipeline defect detection | |
| CN114371221B (en) | Electromagnetic ultrasonic transducer with ultra-high temperature resistant double-coil structure | |
| CN108562642A (en) | Electromagnet transduction device, the pipe detection system and method for longitudinal mode supersonic guide-wave | |
| CN113155977A (en) | Electromagnetic ultrasonic surface wave transducer for high-temperature metal detection and detection method | |
| CN113176342B (en) | Internally-inserted electromagnetic ultrasonic spiral guided wave transducer and working method thereof | |
| Jin et al. | Electromagnetic stimulation of the acoustic emission for fatigue crack detection of the sheet metal | |
| CN103217481A (en) | Magnetoacoustic tomography-with-magnetic-induction probe applying magnetostriction | |
| CN103969340B (en) | A kind of all-round radial battery electromagnet ultrasonic changer | |
| CN110045020A (en) | A kind of electromagnet ultrasonic changer and test macro | |
| CN107064311A (en) | A kind of omni-directional A0 mode Lamb wave electromagnet ultrasonic changer | |
| CN204008561U (en) | Guided wave sensor based on magnetostrictive effect | |
| CN116642532A (en) | Multi-physical fusion detection device and method suitable for detecting defects and thickness of test piece | |
| CN114152184A (en) | Double-layer magnetic shielding type pulse eddy current sensor | |
| CN210626394U (en) | Nondestructive testing system for magneto-optical imaging of composite magnetic field | |
| He et al. | Designs for improving electromagnetic acoustic transducers’ excitation performance | |
| Tu et al. | A new magnetic configuration for a fast electromagnetic acoustic transducer applied to online steel pipe wall thickness measurements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |