CN203811581U - Acoustic emission signal electromagnetic ultrasonic detection device - Google Patents
Acoustic emission signal electromagnetic ultrasonic detection device Download PDFInfo
- Publication number
- CN203811581U CN203811581U CN201320708803.3U CN201320708803U CN203811581U CN 203811581 U CN203811581 U CN 203811581U CN 201320708803 U CN201320708803 U CN 201320708803U CN 203811581 U CN203811581 U CN 203811581U
- Authority
- CN
- China
- Prior art keywords
- signal
- acoustic emission
- detection device
- coil
- connects
- 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
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model relates to the technology of acoustic emission, and in particular to an acoustic emission signal electromagnetic ultrasonic detection device. According to the device, through adopting the transduction mechanism of electromagnetic ultrasonic, detection can be conducted on a metal thin plate; a transducer adopts a permanent magnet to provide magnetic field, is excellent in sensitivity to surface wave, and can position defects accurately; through taking the transduction mechanism of electromagnetic ultrasonic as core technology, no coupling agent is required during detection, no pre-treatment is needed to be conducted on the surface of a testing piece, and the device can be used for conducting on-line detection on the metal thin plate under severe environment such as high-temperature environment and high-speed environment, and is wide in application range and high in detection efficiency.
Description
Technical field
The present invention relates to acoustic emission signal detection technique, is exactly a kind of sheet metal acoustic emission signal electromagnetic supersonic detection device specifically.
Background technology
Along with China's industrialization, modern deeply further, the application of sheet metal spreads all over industry-by-industry, particularly in the national important infrastructures such as petroleum pipe line, boiler, bridge, there is irreplaceable critical positions, the quality testing of sheet metal in these facilities, life-span monitoring is directly connected to the safe operation of national economy.But due to the impact of severe environment for use, these sheet materials ftracture unavoidably, corrode, so that occur potential security threat, therefore, these defects that detect are as early as possible gone forward side by side to exercise and are just seemed most important with life appraisal.Traditional piezoelectric supersonic signal supervisory instrument need to carry out pre-service to test specimen, and daubing coupling agent, and therefore this kind equipment labour intensity is large, and detection efficiency is low.And signal supervisory instrument based on electromagnetic acoustic transducing mechanism is with its non-contacting feature, not only can adapt to well the complicated rugged environment such as high temperature, high speed, and improve detection efficiency.
Summary of the invention
The invention provides a kind of acoustic emission signal that sheet metal below 20mm produces to thickness detects and the electromagnetic acoustic signal supervisory instrument of defect location.
The object of the present invention is achieved like this: described acoustic emission signal electromagnetic supersonic detection device, it is made up of signal receiver array, signal amplifying system and signal processing system, signal receiver array connects signal amplifying system, and signal amplifying system connects signal processing system.
The present invention also has following technical characterictic:
(1) in described signal receiving array, each signal receiver comprises inductive coil, permanent magnet and protective seam; permanent magnet provides static magnetic field; inductive coil connects signal amplifying system, and snakelike coil, spiral coil and compound coil all can be used for the detection of shear wave, compressional wave and surface wave.
(2) described signal amplifying system comprises analog filter, high-gain low-noise amplifier, and analog filter connects high-gain low-noise amplifier, and high-gain low-noise amplifier connects signal processing system.
(3) described signal processing system comprises high-speed AD module, signal processor, storage element and liquid crystal display, high-speed AD module connects signal processing module, signal processing module connects storage element and liquid crystal display, and signal processing module adopts DSP to realize.
The present invention is a kind of acoustic emission signal electromagnetic supersonic detection device, and job step is as follows:
Step 1: signal receiver array is accepted acoustic emission signal, induces voltage signal and passes to signal amplifying system.
Step 2: signal amplifying system, by voltage signal filtering amplification, then passes to signal processing system.
Step 3: simulating signal is transformed to digital signal by the high-speed AD module in signal processing system, and by the distribution situation of signal processor analyzing defect, store and show.
Brief description of the drawings
Fig. 1 is general structure block diagram of the present invention;
Fig. 2 is signal receiver structured flowchart of the present invention;
Fig. 3 is signal amplifying system structured flowchart of the present invention;
Fig. 4 is signal processing system structured flowchart of the present invention;
Fig. 5,6,7 is three kinds of inductive coil structural representations of the present invention;
Fig. 8 is that test specimen of the present invention detects schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described for example.
As shown in Figure 1, signal receiver array (1) collection signal, via being transferred to signal processing system (3) after signal amplifying system (2) filter and amplification, signal processing system (3) is carried out analyzing and processing to signal, finally realizes judgement the location to defect.
As shown in Figure 2; in described signal receiver array, each signal receiver comprises inductive coil (4), permanent magnet (5) and protective seam (6), and inductive coil (4) connects signal amplifying system (2).
As shown in Figure 3, described signal amplifying system (2) comprises analog filter (7), high-gain low-noise amplifier (8), analog filter (7) connects high-gain low-noise amplifier (8), and high-gain low-noise amplifier (8) connects signal processing system (3).
As shown in Figure 4, described signal processing system comprises high-speed AD module (9), signal processor (10), storage element (11) and liquid crystal display (12), high-speed AD module (9) connects signal processing module (10), signal processing module (10) connects storage element (11) and liquid crystal display (12), and signal processing module adopts DSP to realize.
As shown in Figure 5, described inductive coil (4) can be snakelike coil (13).
As shown in Figure 6, described inductive coil (4) can be spiral coil (14).
As shown in Figure 7, described inductive coil (4) can be compound coil (15), specifically comprise snakelike coil (13) and spiral coil (14), snakelike coil (13) connects spiral coil (14), and position is overlapping up and down.
The present invention is a kind of acoustic emission signal electromagnetic supersonic detection device, and job step is as follows:
Step 1: sheet metal produces acoustic emission signal, and signal receiver array received acoustic emission signal, induces voltage signal and pass to signal amplifying system.
Step 2: signal amplifying system, by voltage signal filtering amplification, then passes to signal processing system.
Step 3: simulating signal is transformed to digital signal by the high-speed AD module in signal processing system, and by the distribution situation of signal processor analyzing defect, store and show.
Claims (8)
1. an acoustic emission signal electromagnetic supersonic detection device, it is made up of signal receiver array (1), signal amplifying system (2), signal processing system (3), it is characterized in that signal receiver array (1) connects signal amplifying system (2), signal amplifying system (2) connects signal processing system (3).
2. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 1; it is characterized in that: in described signal receiver array (1), each signal receiver comprises inductive coil (4), permanent magnet (5) and protective seam (6), inductive coil (4) connects signal amplifying system (2).
3. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 1, it is characterized in that: described signal amplifying system (2) comprises analog filter (7), high-gain low-noise amplifier (8), analog filter (7) connects high-gain low-noise amplifier (8), and high-gain low-noise amplifier (8) connects signal processing system (3).
4. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 1, it is characterized in that: described signal processing system (3) comprises high-speed AD module (9), signal processor (10), storage element (11) and liquid crystal display (12), high-speed AD module (9) connects signal processing module (10), signal processing module (10) connects storage element (11) and liquid crystal display (12), and signal processing module adopts DSP to realize.
5. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 2, it is characterized in that: the design shape of described inductive coil (4) has three kinds, comprise snakelike coil (13), spiral coil (14), compound coil (15).
6. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 5, it is characterized in that: described compound coil (15) comprises snakelike coil (13) and spiral coil (14), snakelike coil (13) connects spiral coil (14), and position is overlapping up and down.
7. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 2, is characterized in that: the design shape of described permanent magnet (5) has two kinds, comprises cylindrical and rectangle.
8. a kind of acoustic emission signal electromagnetic supersonic detection device according to claim 2, is characterized in that: the design shape of described protective seam (6) has two kinds, comprises cylindrical and rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708803.3U CN203811581U (en) | 2013-11-08 | 2013-11-08 | Acoustic emission signal electromagnetic ultrasonic detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320708803.3U CN203811581U (en) | 2013-11-08 | 2013-11-08 | Acoustic emission signal electromagnetic ultrasonic detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811581U true CN203811581U (en) | 2014-09-03 |
Family
ID=51450315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320708803.3U Expired - Fee Related CN203811581U (en) | 2013-11-08 | 2013-11-08 | Acoustic emission signal electromagnetic ultrasonic detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954354A (en) * | 2016-04-28 | 2016-09-21 | 中国石油化工股份有限公司 | Ultrasonic non-destructive detection device for detecting defect of thin plate |
-
2013
- 2013-11-08 CN CN201320708803.3U patent/CN203811581U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954354A (en) * | 2016-04-28 | 2016-09-21 | 中国石油化工股份有限公司 | Ultrasonic non-destructive detection device for detecting defect of thin plate |
| CN105954354B (en) * | 2016-04-28 | 2018-08-28 | 中国石油化工股份有限公司 | A kind of device carrying out Ultrasonic Nondestructive to thin plate defect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102182933B (en) | Nondestructive detection system and method for pulsed magnetic flux leakage defects and stresses | |
| CN102230914B (en) | Electromagnetic resonance-based nondestructive testing method for metal material | |
| Jeon et al. | Damage detection on composite structures with standing wave excitation and wavenumber analysis | |
| CN206489114U (en) | The sensor and system of type multimode electromagnetic ultrasound and Magnetic Flux Leakage Inspecting | |
| CN103412049B (en) | A kind of high temperature steam injection defect of pipeline monitoring method | |
| US20210262983A1 (en) | Low-Frequency Electromagnetic Detection Method For Large-Scale Damage Of Ferromagnetic Materials Based On Broadband Excitation | |
| CN202794106U (en) | Stress detecting device based on Barkhausen principle | |
| CN103353479A (en) | Electromagnetic ultrasonic longitudinal guided wave and magnetic leakage detection compounded detection method | |
| CN103412038B (en) | The portable ACFM detector of a kind of Based PC/104 embedded system | |
| CN103257182A (en) | Pulse vortexing defect quantitative detection method and detection system | |
| CN105353030A (en) | Low-frequency electromagnetism-based defect detecting device | |
| CN202018442U (en) | Nondestructive detecting system for pulsed magnetic flux leakage defect and stress | |
| CN109444270A (en) | A kind of electromagnetic acoustic and impulse eddy current compound detection sensor | |
| WO2021007970A1 (en) | Carrier-type pulsed eddy current testing method and device | |
| CN104792875A (en) | Double coil-based flexible electromagnetic ultrasonic testing system and testing method | |
| CN103792287A (en) | Large-area structural damage detection method based on Lamb wave | |
| CN103615995A (en) | Method for lossless evaluation of thickness of thin cladding layer based on ultrasonic surface waves | |
| CN101281166A (en) | Method and apparatus for permanent magnetism destabilization nondestructive detection | |
| CN104833720A (en) | Method for single-coil electromagnetic resonance detection of metal pipeline damage | |
| CN205449361U (en) | Residual stress test equipment | |
| CN105092691A (en) | Quantitative detection method and detector for detecting accumulated oxide scales in pipelines | |
| Lei et al. | Ultrasonic pig for submarine oil pipeline corrosion inspection | |
| CN203811581U (en) | Acoustic emission signal electromagnetic ultrasonic detection device | |
| CN204228305U (en) | Magnetic Memory-Barkhausen's fusion detection stress system | |
| CN201993345U (en) | Nondestructive test instrument for concrete structure |
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 |
Granted publication date: 20140903 Termination date: 20141108 |
|
| EXPY | Termination of patent right or utility model |