CN108844963A - Large-scale storage tank Corrosion of base plate defect on-line monitoring system and method - Google Patents
Large-scale storage tank Corrosion of base plate defect on-line monitoring system and method Download PDFInfo
- Publication number
- CN108844963A CN108844963A CN201810652709.8A CN201810652709A CN108844963A CN 108844963 A CN108844963 A CN 108844963A CN 201810652709 A CN201810652709 A CN 201810652709A CN 108844963 A CN108844963 A CN 108844963A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- sensing device
- acoustic emission
- processing unit
- base plate
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/909—Investigating the presence of flaws or contamination in a container or its contents in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
Abstract
The invention proposes a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring system and methods, wherein detection system includes：Exciting bank, sensing device and processing unit；The exciting bank is perhaps arranged in the exposed position at storage tank bottom plate edge or is arranged on storage tank outer wall；The sensing device uses distributed optical fiber sensing system or acoustic emission sensor；When sensing device uses distributed optical fiber sensing system, the sensor fibre of distributed optical fiber sensing system is laid on the inner wall of storage tank bottom plate；When sensing device uses acoustic emission sensor, acoustic emission sensor is suspended in the middle part of storage tank inner cavity by hanger rope；The signal output section of the sensing device is connect with processing unit；The method have the benefit that：Storage tank bottom plate defect can be monitored on-line by proposing a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring system and method, the technology, and monitoring operation is simple, and cost is relatively low, and the accuracy of detection and positioning is all higher.
Description
Technical field
The present invention relates to a kind of storage tank bottom plate corrosion default on-line monitoring technique more particularly to a kind of large-scale storage tank bottom plate are rotten
Lose defect on-line monitoring system and method.
Background technique
With the fast development of the related industries technology such as China's oil storage tank, plate needed for the structures such as storage tank bottom plate, tank skin
Material demand also increases sharply；However, the sheet metals such as iron plate, steel plate in long-term production and use process inevitably
It will appear the defects of burn into falls off, will cause oil storage leakage when serious.
Existing Corrosion of Tanks defect detecting technique mainly has artificial observation method, detection method of eddy, Magnetic Flux Leakage Inspecting method, sound hair
Penetrate method, distribution type fiber-optic vibration measuring method and ultrasonic guided wave detecting method；
Wherein, the detection accuracy of artificial observation method is low, needs to expend many man power and materials, and working efficiency is low, can only
Judge whether that severe leakage situation occurs, can not determine leakage point position, cannot achieve on-line monitoring；Detection method of eddy and leakage field
Detection method cannot achieve continuous monitoring, and detection requires to carry out storage tank clear tank operation every time, cumbersome；
Ultrasonic guided wave detecting method can carry out corrosion default detection to small-sized tank structure in the case where not stopping production, but right
For large-scale storage tank, since the storage tank scale of construction is larger, inside there are many weld seams, and welding type is there is also diversity,
T-type fillet weld at such as butt weld, lap weld and margin plate；Supersonic guide-wave sensor array is usually placed in outside tank body
Portion, since weld seam is more, supersonic guide-wave can be scattered in numerous commissures, cause supersonic guide-wave that can not go deep into storage tank bottom plate
Inside, meanwhile, sensor array is also difficult to receive defect information related with storage tank bottom plate, therefore can not be on storage tank bottom plate
Defect accurately identified and positioned；Acoustic-emission and distribution type fiber-optic vibration measuring method belong to Distributed Measurement System, pass
Sensor or sensor fibre can be arranged on storage tank bottom plate lower surface, therefore can also be in the case where not stopping production to storage tank bottom plate
Health status is assessed, and still, acoustic-emission and distribution type fiber-optic vibration measuring method all can only there is a situation where reveal to issue
The effect of waving, for also in developing stage and the defect of not formed leakage can not detect, for example steel plate is thinning, bead crack
The defects of growth, therefore acoustic-emission and distribution type fiber-optic vibration measuring method are not used to monitoring and warning.
Summary of the invention
For the problems in background technique, the invention proposes a kind of large-scale storage tank Corrosion of base plate defect on-line monitorings to be
System, innovation are：The large-scale storage tank Corrosion of base plate defect on-line detecting system includes：The large-scale storage tank Corrosion of base plate lacks
Sunken on-line detecting system includes：Exciting bank, sensing device and processing unit；The exciting bank, or be arranged in bottom of storage tank
The exposed position of edges of boards edge, or be arranged on storage tank outer wall；The sensing device uses distributed optical fiber sensing system or sound
Emission sensor；When sensing device uses distributed optical fiber sensing system, the sensor fibre of distributed optical fiber sensing system is laid
On the inner wall of storage tank bottom plate；When sensing device uses acoustic emission sensor, acoustic emission sensor passes through hanger rope (voice sending sensor
The electrical lead wire of device can arrange along hanger rope, or directly using the electrical lead wire of acoustic emission sensor as hanger rope) it is suspended on storage tank
In the middle part of inner cavity；The signal output section of the sensing device is connect with processing unit.
The principle of the present invention is：Distributed optical fiber sensing system and acoustic emission sensor are biographies common in the art
Induction device；It, can be preferably since acoustic emission sensor is laid in tank inside when sensing device uses acoustic emission sensor
Receive the scattered information from storage tank bottom plate；When sensing device uses distributed optical fiber sensing system, pass through exciting bank master
It is dynamic to apply excitation, active detecting can be carried out to storage tank bottom plate, solving existing distribution type fiber-optic vibration measuring method can only be in leakage feelings
The problem of competence exertion acts under condition；When concrete application, also the present invention can mutually be tied with existing supersonic guide-wave sensor array
It closes, storage tank bottom plate is detected by the present invention, the position other than storage tank bottom plate is examined by supersonic guide-wave sensor array
It surveys, this just enables us to easily monitor the structural health conditions of storage tank entirety on-line, defect hidden danger is found in time,
It can be punished in time after there is defect hidden danger.
, can be when building for newly-built storage tank when concrete application, while building monitoring system of the invention, for
Storage tank is used as a servant, the clear tank operation of disposable (subsequent monitoring process does not need clear tank again) can be carried out to it, it then will be of the invention
Sensing device is arranged in storage tank；After monitoring system is laid, during subsequent operation, so that it may make not influencing storage tank normally
Under conditions of, tank structure health detection is completed, detection operation convenience is preferable, and cost is relatively low.
Preferably, when sensing device uses acoustic emission sensor, multiple acoustic emission sensors, Ge Gesheng are hung in storage tank
Emission sensor is equal with the spacing distance of storage tank bottom plate, and multiple acoustic emission sensors are on storage tank cross section by array format point
Cloth；The array is cross array, circular array or matrix.
Preferably, the exciting bank is multiple, and multiple exciting banks are circumferentially distributed along storage tank.Arrange multiple excitation dresses
It sets, us is allow to obtain the multi-signal of different energized positions, can effectively improve the accuracy of detection and comprehensive.
It is involved the invention also provides a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring method based on aforementioned system
And hardware it is as previously described；Specifically monitoring method includes：
1) after exciting bank, sensing device and processing unit install, storage tank is put into normal use；
2) in the case that medium remains static in storage tank, primary detection is carried out：Control exciting bank is applied to storage tank
Excitation is added to generate supersonic guide-wave, sensing device is synchronous to obtain detection signal, then will test signal and is transmitted to processing unit, handles
Device will test signal and be stored as reference signal；
3) during subsequent operation, exciting bank is periodically controlled to storage tank and applies excitation generation supersonic guide-wave, and is led to
It crosses sensing device and obtains corresponding monitoring signals, monitoring signals are then transmitted to processing unit, processing unit is by monitoring signals
Subtract each other with reference signal, then take envelope and judges whether there is the appearance of wave packet on envelope：If no wave packet occurs, then it is assumed that bottom of storage tank
Do not occur defect on plate；If there is the appearance of wave packet, then it is assumed that defect occurs in storage tank bottom plate, then according to flight time algorithm to scarce
Sunken position is positioned.
The signal processing means and envelope extraction of distributed optical fiber sensing system and acoustic emission sensor and flight time
Algorithm is the prior art, therefore is no longer repeated herein specific processing mode.
The method have the benefit that：Propose a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring system and side
Method, the technology can monitor storage tank bottom plate defect on-line, and monitoring operation is simple, and cost is relatively low, the standard of detection and positioning
True property is all higher.
Detailed description of the invention
Fig. 1, detection schematic diagram of the invention；
Fig. 2, acoustic emission sensor layout position illustration；
Fig. 3, acoustic emission sensor lay schematic diagram one (circular array)；
Fig. 4, acoustic emission sensor lay schematic diagram two (cross array)；
Fig. 5, acoustic emission sensor lay schematic diagram three (matrix).
Specific embodiment
A kind of large-scale storage tank Corrosion of base plate defect on-line monitoring system, innovation are：The large-scale storage tank Corrosion of base plate
Defect on-line detecting system includes：Exciting bank, sensing device and processing unit；The exciting bank, or be arranged in storage tank
The exposed position of bottom edge, or be arranged on storage tank outer wall；The sensing device using distributed optical fiber sensing system or
Acoustic emission sensor；When sensing device uses distributed optical fiber sensing system, the sensor fibre cloth of distributed optical fiber sensing system
It is located on the inner wall of storage tank bottom plate；When sensing device uses acoustic emission sensor, acoustic emission sensor is suspended on storage by hanger rope
In the middle part of tank inner cavity；The signal output section of the sensing device is connect with processing unit.
Further, when sensing device uses acoustic emission sensor, multiple acoustic emission sensors are hung in storage tank, it is each
Acoustic emission sensor is equal with the spacing distance of storage tank bottom plate, and multiple acoustic emission sensors press array format on storage tank cross section
Distribution；The array is cross array, circular array or matrix.
Further, the exciting bank is multiple, and multiple exciting banks are circumferentially distributed along storage tank.
A kind of large-scale storage tank Corrosion of base plate defect on-line monitoring method, related hardware include：Exciting bank, sensing dress
It sets and processing unit；The exciting bank is perhaps arranged in the exposed position at storage tank bottom plate edge or is arranged in storage tank outer wall
On；The sensing device uses distributed optical fiber sensing system or acoustic emission sensor；Sensing device is passed using distribution type fiber-optic
When sensing system, the sensor fibre of distributed optical fiber sensing system is laid on the inner wall of storage tank bottom plate；Sensing device is sent out using sound
When penetrating sensor, acoustic emission sensor is suspended in the middle part of storage tank inner cavity by hanger rope；The signal output section of the sensing device with
Processing unit connection；
Its innovation is：The large-scale storage tank Corrosion of base plate defect on-line monitoring method includes：
1) after exciting bank, sensing device and processing unit install, storage tank is put into normal use；
2) in the case that medium remains static in storage tank, primary detection is carried out：Control exciting bank is applied to storage tank
Excitation is added to generate supersonic guide-wave, sensing device is synchronous to obtain detection signal, then will test signal and is transmitted to processing unit, handles
Device will test signal and be stored as reference signal；
3) during subsequent operation, exciting bank is periodically controlled to storage tank and applies excitation generation supersonic guide-wave, and is led to
It crosses sensing device and obtains corresponding monitoring signals, monitoring signals are then transmitted to processing unit, processing unit is by monitoring signals
Subtract each other with reference signal, envelope is then taken (when using acoustic emission sensor, should to be also filtered before taking envelope, to subtract
Burr on few envelope) and judge whether there is the appearance of wave packet on envelope：If no wave packet occurs, then it is assumed that do not occur on storage tank bottom plate
Defect；If there is the appearance of wave packet, then it is assumed that defect occurs in storage tank bottom plate, is then carried out according to flight time algorithm to defective locations
Positioning.
Further, when sensing device uses acoustic emission sensor, multiple acoustic emission sensors are hung in storage tank, it is each
Acoustic emission sensor is equal with the spacing distance of storage tank bottom plate, and multiple acoustic emission sensors press array format on storage tank cross section
Distribution；The array is cross array, circular array or matrix.
Further, the exciting bank is multiple, and multiple exciting banks are circumferentially distributed along storage tank；Single detection cycle
In, multiple exciting banks successively apply excitation, and sensing device obtains corresponding detection signal respectively.
Claims (6)
1. a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring system, it is characterised in that：The large-scale storage tank Corrosion of base plate lacks
Sunken on-line detecting system includes：Exciting bank, sensing device and processing unit；The exciting bank, or be arranged in bottom of storage tank
The exposed position of edges of boards edge, or be arranged on storage tank outer wall；The sensing device uses distributed optical fiber sensing system or sound
Emission sensor；When sensing device uses distributed optical fiber sensing system, the sensor fibre of distributed optical fiber sensing system is laid
On the inner wall of storage tank bottom plate；When sensing device uses acoustic emission sensor, acoustic emission sensor is suspended on storage tank by hanger rope
In the middle part of inner cavity；The signal output section of the sensing device is connect with processing unit.
2. large-scale storage tank Corrosion of base plate defect on-line monitoring system according to claim 1, it is characterised in that：Sensing device
When using acoustic emission sensor, multiple acoustic emission sensors are hung in storage tank, each acoustic emission sensor and storage tank bottom plate
Spacing distance is equal, and multiple acoustic emission sensors are distributed on storage tank cross section by array format；The array is cross battle array
Column, circular array or matrix.
3. large-scale storage tank Corrosion of base plate defect on-line monitoring system according to claim 1 or 2, it is characterised in that：It is described
Exciting bank be it is multiple, multiple exciting banks are circumferentially distributed along storage tank.
4. a kind of large-scale storage tank Corrosion of base plate defect on-line monitoring method, related hardware include：Exciting bank, sensing device
And processing unit；The exciting bank is perhaps arranged in the exposed position at storage tank bottom plate edge or is arranged in storage tank outer wall
On；The sensing device uses distributed optical fiber sensing system or acoustic emission sensor；Sensing device is passed using distribution type fiber-optic
When sensing system, the sensor fibre of distributed optical fiber sensing system is laid on the inner wall of storage tank bottom plate；Sensing device is sent out using sound
When penetrating sensor, acoustic emission sensor is suspended in the middle part of storage tank inner cavity by hanger rope；The signal output section of the sensing device with
Processing unit connection；
It is characterized in that：The large-scale storage tank Corrosion of base plate defect on-line monitoring method includes：
1) after exciting bank, sensing device and processing unit install, storage tank is put into normal use；
2) in the case that medium remains static in storage tank, primary detection is carried out：Exciting bank is controlled to swash to storage tank application
Generation supersonic guide-wave is encouraged, sensing device is synchronous to obtain detection signal, then will test signal and is transmitted to processing unit, processing unit
It will test signal and be stored as reference signal；
3) during subsequent operation, exciting bank is periodically controlled to storage tank and applies excitation generation supersonic guide-wave, and passes through biography
Induction device obtains corresponding monitoring signals, and monitoring signals are then transmitted to processing unit, and processing unit is by monitoring signals and base
Calibration signal is subtracted each other, and is then taken envelope and is judged whether there is the appearance of wave packet on envelope：If no wave packet occurs, then it is assumed that on storage tank bottom plate
Do not occur defect；If there is the appearance of wave packet, then it is assumed that defect occurs in storage tank bottom plate, then according to flight time algorithm to defective bit
It sets and is positioned.
5. large-scale storage tank Corrosion of base plate defect on-line monitoring method according to claim 4, it is characterised in that：Sensing device
When using acoustic emission sensor, multiple acoustic emission sensors are hung in storage tank, each acoustic emission sensor and storage tank bottom plate
Spacing distance is equal, and multiple acoustic emission sensors are distributed on storage tank cross section by array format；The array is cross battle array
Column, circular array or matrix.
6. large-scale storage tank Corrosion of base plate defect on-line monitoring method according to claim 4 or 5, it is characterised in that：It is described
Exciting bank be it is multiple, multiple exciting banks are circumferentially distributed along storage tank；In single detection cycle, multiple exciting banks successively apply
Excitation, sensing device obtain corresponding detection signal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810652709.8A CN108844963B (en) | 2018-06-22 | 2018-06-22 | Online monitoring system and method for corrosion defects of bottom plate of large storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810652709.8A CN108844963B (en) | 2018-06-22 | 2018-06-22 | Online monitoring system and method for corrosion defects of bottom plate of large storage tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844963A true CN108844963A (en) | 2018-11-20 |
| CN108844963B CN108844963B (en) | 2021-05-28 |
Family
ID=64203029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810652709.8A Active CN108844963B (en) | 2018-06-22 | 2018-06-22 | Online monitoring system and method for corrosion defects of bottom plate of large storage tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108844963B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596623A (en) * | 2018-12-21 | 2019-04-09 | 无锡先导智能装备股份有限公司 | A kind of defect inspection method and device |
| CN110333296A (en) * | 2019-05-21 | 2019-10-15 | 合肥通用机械研究院有限公司 | A kind of atmospheric storage tank tank bottom Failure Probability Model based on acoustic emission detection |
| CN110646513A (en) * | 2019-10-17 | 2020-01-03 | 重庆大学 | Structural body bottom plate health state detection method based on guided wave combined excitation |
| CN110702787A (en) * | 2019-10-17 | 2020-01-17 | 常州大学 | Large-scale storage tank bottom plate corrosion immersion acoustic global detection method |
| CN111257429A (en) * | 2020-03-24 | 2020-06-09 | 济南大学 | Laying method of cobweb-like sensor array and application of cobweb-like sensor array in concrete health monitoring |
| CN112945282A (en) * | 2021-02-04 | 2021-06-11 | 中国特种设备检测研究院 | Large-scale crude oil storage tank large-angle weld defect optical fiber monitoring method and system |
| CN113063518A (en) * | 2021-03-24 | 2021-07-02 | 山东特种设备检验检测集团有限公司 | Atmospheric storage tank bottom plate corrosion monitoring method based on optical fiber sensing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157979A (en) * | 1982-03-12 | 1983-09-20 | Nippon Boshoku Kogyo Kk | Method for preventing corrosion of bottom plate of tank |
| JP2009202889A (en) * | 2008-02-26 | 2009-09-10 | Ihi Corp | Lateral nonslip device for cylindrical tank |
| CN202159039U (en) * | 2011-05-13 | 2012-03-07 | 中国石油天然气股份有限公司 | Ultrasonic guided wave detecting system of bottom board of oil storage tank |
| CN102506740A (en) * | 2011-11-11 | 2012-06-20 | 天津亿利科能源科技发展股份有限公司 | Deformation on-line monitoring device of bottom plate of storage tank based on optical fiber grating |
| US20150082888A1 (en) * | 2013-09-20 | 2015-03-26 | Kabushiki Kaisha Toshiba | Acoustic sensor and acoustic sensor system |
| CN205139092U (en) * | 2015-08-26 | 2016-04-06 | 中国石油天然气股份有限公司 | Invasive acoustic emission signal collection system and be used for signal collection system of storage tank |
| CN105651859A (en) * | 2016-01-12 | 2016-06-08 | 杭州浙达精益机电技术股份有限公司 | Ultrasonic guided wave device and method for monitoring corrosion of pipeline |
| CN206594108U (en) * | 2017-04-11 | 2017-10-27 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | A kind of passive combined detection system of hydraulically created fracture sound wave sound emission master |
-
2018
- 2018-06-22 CN CN201810652709.8A patent/CN108844963B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58157979A (en) * | 1982-03-12 | 1983-09-20 | Nippon Boshoku Kogyo Kk | Method for preventing corrosion of bottom plate of tank |
| JP2009202889A (en) * | 2008-02-26 | 2009-09-10 | Ihi Corp | Lateral nonslip device for cylindrical tank |
| CN202159039U (en) * | 2011-05-13 | 2012-03-07 | 中国石油天然气股份有限公司 | Ultrasonic guided wave detecting system of bottom board of oil storage tank |
| CN102506740A (en) * | 2011-11-11 | 2012-06-20 | 天津亿利科能源科技发展股份有限公司 | Deformation on-line monitoring device of bottom plate of storage tank based on optical fiber grating |
| US20150082888A1 (en) * | 2013-09-20 | 2015-03-26 | Kabushiki Kaisha Toshiba | Acoustic sensor and acoustic sensor system |
| CN205139092U (en) * | 2015-08-26 | 2016-04-06 | 中国石油天然气股份有限公司 | Invasive acoustic emission signal collection system and be used for signal collection system of storage tank |
| CN105651859A (en) * | 2016-01-12 | 2016-06-08 | 杭州浙达精益机电技术股份有限公司 | Ultrasonic guided wave device and method for monitoring corrosion of pipeline |
| CN206594108U (en) * | 2017-04-11 | 2017-10-27 | 平安煤矿瓦斯治理国家工程研究中心有限责任公司 | A kind of passive combined detection system of hydraulically created fracture sound wave sound emission master |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596623A (en) * | 2018-12-21 | 2019-04-09 | 无锡先导智能装备股份有限公司 | A kind of defect inspection method and device |
| CN109596623B (en) * | 2018-12-21 | 2021-07-06 | 无锡先导智能装备股份有限公司 | Defect detection method and device |
| CN110333296A (en) * | 2019-05-21 | 2019-10-15 | 合肥通用机械研究院有限公司 | A kind of atmospheric storage tank tank bottom Failure Probability Model based on acoustic emission detection |
| CN110646513A (en) * | 2019-10-17 | 2020-01-03 | 重庆大学 | Structural body bottom plate health state detection method based on guided wave combined excitation |
| CN110702787A (en) * | 2019-10-17 | 2020-01-17 | 常州大学 | Large-scale storage tank bottom plate corrosion immersion acoustic global detection method |
| CN110646513B (en) * | 2019-10-17 | 2021-11-12 | 重庆大学 | Structural body bottom plate health state detection method based on guided wave combined excitation |
| CN111257429A (en) * | 2020-03-24 | 2020-06-09 | 济南大学 | Laying method of cobweb-like sensor array and application of cobweb-like sensor array in concrete health monitoring |
| CN112945282A (en) * | 2021-02-04 | 2021-06-11 | 中国特种设备检测研究院 | Large-scale crude oil storage tank large-angle weld defect optical fiber monitoring method and system |
| CN112945282B (en) * | 2021-02-04 | 2022-04-05 | 中国特种设备检测研究院 | Large-scale crude oil storage tank large-angle weld defect optical fiber monitoring method and system |
| CN113063518A (en) * | 2021-03-24 | 2021-07-02 | 山东特种设备检验检测集团有限公司 | Atmospheric storage tank bottom plate corrosion monitoring method based on optical fiber sensing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108844963B (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108844963A (en) | Large-scale storage tank Corrosion of base plate defect on-line monitoring system and method | |
| CN104501750B (en) | A kind of method of ultrasonic phase array measurement U rib weld penetrations | |
| US8336383B2 (en) | Method and apparatus for automatic non-destructive testing of tubular axle shafts with variable internal and external radius profiles | |
| CN206594108U (en) | A kind of passive combined detection system of hydraulically created fracture sound wave sound emission master | |
| CN107064289A (en) | The methods, devices and systems and sensor of type multimode electromagnetic ultrasound and Magnetic Flux Leakage Inspecting | |
| CN107340328A (en) | A kind of weldment defect detecting system and detection method | |
| CN103353479B (en) | The detection method that a kind of electromagnetic acoustic longitudinal wave guide is compound with Magnetic Flux Leakage Inspecting | |
| CN104914157B (en) | A kind of defect the cannot-harm-detection device in metal structure short space | |
| CN103529121B (en) | Composite material laminated board machine adds bore edges pulse reflection method lamination defect analogy method | |
| BR0114581A (en) | Method for configuring an orderly array of transducers on an ultrasonic tester and apparatus and method for detecting defects in an austenically weld seam | |
| CN105021142B (en) | The measuring method and equipment therefor of a kind of laser lap weld width | |
| CN106198722B (en) | Method and device for detecting welding seam by pulse eddy current | |
| JP2018081076A (en) | System and method for nondestructive evaluation of test object | |
| CN105136910B (en) | A kind of tube sheet stereochemical structure girth joint acoustic emission detection localization method | |
| CN105929019A (en) | Non-contact steel pipe flux leakage detection probe system | |
| CN105842340A (en) | Oil tanker anchor chain nondestructive detection device and detection method thereof | |
| CN206489119U (en) | Type multimode electromagnetic ultrasonic testing system and electromagnetic ultrasonic transducer | |
| CN206038614U (en) | Ship sluice bottom board crack detecting system | |
| CN205670137U (en) | Automatically the reference block detected for sheet material electromagnetic acoustic | |
| CN105987751A (en) | Sensor for detecting 2D vibration velocity and sound pressure of water medium | |
| CN108267509A (en) | Damage image conversion system based on Lamb wave | |
| CN108535365B (en) | Square pipeline external detection electromagnetic ultrasonic flaw detection transducer structure | |
| KR100967084B1 (en) | Crack Monitoring System, Crack Monitoring Method and Computer Readable Medium on which Crack Monitoring Program is Recorded | |
| CN102590327A (en) | Multi-channel magnetic flaw detector | |
| CN105588523A (en) | Measuring method and measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |