CN105259250A - Method for detecting integrity of weld through ultrasonic guided wave array - Google Patents
Method for detecting integrity of weld through ultrasonic guided wave array Download PDFInfo
- Publication number
- CN105259250A CN105259250A CN201510604399.9A CN201510604399A CN105259250A CN 105259250 A CN105259250 A CN 105259250A CN 201510604399 A CN201510604399 A CN 201510604399A CN 105259250 A CN105259250 A CN 105259250A
- Authority
- CN
- China
- Prior art keywords
- weld
- weld seam
- guided wave
- integrity
- wave array
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a method for detecting the integrity of a weld through an ultrasonic guided wave array. The method comprises the following steps: 1, exciting L (0, 2) symmetrical guided waves in a pipeline, and arranging sensor arrays at two sides of the weld to receive a detection signal; 2, calculating the peak of incoming waves before the guided waves go through the weld and the peak of transmitted waves after the guided waves go through the weld, and adopting the reciprocal of a transmission coefficient as a damage index; and 3, drawing the circumferential distribution curve of the damage index, and carrying out weld defect parameter identification on the peaks of the curve. The ultrasonic guided wave array is adopted to realize thorough detection and high precision of the integrity of the weld.
Description
Technical field
The present invention relates to weld integrity detection technique field, particularly relate to a kind of method of supersonic guide-wave array detection weld integrity.
Background technology
Along with the expectation of client is constantly risen, the quality of weld seam is just becoming more and more important.People expected product and assembly have high-quality, and can not surprisingly break down.This type of can cause the fault of great finance and societal consequence often can be avoided by suitable detection technique.Detect weld seam by detecting defect to reduce costs at the commitment manufactured, the cost of client returns to be reduced by detecting and correct all defect and extend life-span of assembly.
Existing weld seam detection technology still has many defects, is exactly the most significantly to detect thoroughly, and can not identify the integrality with reasonable assessment weld seam, we propose a kind of method of supersonic guide-wave array detection weld integrity for this reason, are used for solving the problem.
Summary of the invention
Based on the technical matters that background technology exists, the present invention proposes a kind of method of supersonic guide-wave array detection weld integrity.
The method of a kind of supersonic guide-wave array detection weld integrity that the present invention proposes, comprises the steps;
A, excite L (0,2) Guided in the duct, at weld seam both sides placement sensor array;
B, calculate guided wave by transmission coefficient during weld seam, and using its inverse as damage criterion;
The hoop distribution curve of c, drafting damage criterion, utilizes the peak value on this curve to carry out the identification of weld defect parameter.
Preferably, the sensor array mode in a is uniform arrangement 16 sensors in weld seam both sides, and totally 32 sensors, are labeled as S respectively
1q, S
2q... .S
16q, represent weld seam front end sensors; S
1h, S
2h... .S
16h, end sensor after expression weld seam.
Preferably, the value that the transmission coefficient in b obtains divided by this sensor record guided wave signals peak value before weld seam for sensor record guided wave signals peak value after weld seam.
Preferably, the weld defect parameter identification method in c for choosing first ripple bag analysis before and after weld seam, definition weld seam after first ripple bag peak A
qfirst ripple bag peak A front with weld seam
hratio be transmissivity R
t, and R
t=A
h/ A
q, therefore D
index=1/R
t.
The method of a kind of supersonic guide-wave array detection weld integrity that the present invention proposes, corresponding label sensor is positioned at same hoop position, weld defect hoop parameter and radial Parametric Representation, symmetrical supersonic guide-wave is excited in pipeline side, utilize uniform sensor record guided wave signals before and after weld seam, and calculate the transmission coefficient of respective sensor tracer signal, the present invention adopts supersonic guide-wave array, achieve the thorough detection of weld integrity, precision is high.
Accompanying drawing explanation
Fig. 1 is R
tand the relation schematic diagram between the radial parameter of weld defect.
Fig. 2 is weld defect hoop recognition result schematic diagram.
Fig. 3 is defect of pipeline model and measuring point distribution plan.
Fig. 4 is pumping signal figure.
Fig. 5 is the displacement time-history curves comparison diagram of measuring point before and after weld defect.
Fig. 6 is the damage criterion variation diagram of weld defect.
Fig. 7 is the damage criterion figure of stack pile different angles operating mode.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
The method of a kind of supersonic guide-wave array detection weld integrity that the present invention proposes, comprises the steps:
A, pipeline weldering in excite L (0,2) Guided, at weld seam both sides placement sensor array, sensor array mode is uniform arrangement 16 sensors in weld seam both sides, and totally 32 sensors, are labeled as S respectively
1q, S
2q... .S
16q, represent weld seam front end sensors; S
1h, S
2h... .S
16h, end sensor after expression weld seam.
As shown in Figure 3, after weld seam, No. 1 sensor record guided wave signals peak value is divided by the front No. 1 sensor record guided wave signals peak value of weld seam, obtains transmission coefficient, by that analogy, obtains the hoop distribution of 16 transmission coefficients.The inverse of definition transmission coefficient is damage criterion Dindex, utilizes the hoop of Dindex value distribution identifiable design to go out the hoop of weld defect and radial parameter.A kind of pipeline that following table 1 provides for the present embodiment and solder material parameter.
Wherein, weld defect arranges as follows:
B, calculate guided wave by transmission coefficient during weld seam, and using its inverse as damage criterion, the value that transmission coefficient obtains divided by this sensor record guided wave signals peak value before weld seam for sensor record guided wave signals peak value after weld seam.When defect hoop size is fixed as π/6, during defect variation in thickness, damage criterion change as shown in Figure 6.
C, draw the hoop distribution curve of damage criterion, utilize the peak value on this curve to carry out the identification of weld defect parameter, weld defect parameter identification method for choosing first ripple bag analysis before and after weld seam, first ripple bag peak A after definition weld seam
qfirst ripple bag peak A front with weld seam
hratio be transmissivity R
t, and R
t=A
h/ A
q, therefore D
index=1/R
t.
When the radial parameter of fixation weld defect is 2mm, the hoop parameter of change weld defect, calculates the Dindex of each operating mode, Figure 7 shows that the damage criterion figure of stack pile different angles operating mode.
In the present invention, utilize the Dindex reciprocal of hoop transmission coefficient can find out the position of weld defects at hoop, and the size of Dindex value reflect the depth parameter change of defect.With the transmissivity of complete solder as a reference, be d containing the Dindex extreme value of poor weld pipe to the distance definition of the Dindex of complete solder pipe, when the radial parameter of weld defect is from 0.5mm, 1.5mm, 2.5mm, when 3.5mm increases gradually, the value of d is changed to 0.22, and 0.82,1.73,3.06, be similar to and meet quadratic function relation.
In the present invention, Dindex distribution curve is calculated with the transmission coefficient of complete weld seam, calculate containing the Dindex distribution curve of poor weld pipeline and the intersection point of complete weld seam pipeline Dindex distribution curve, and connect the formation identification angle in two intersection points and the center of circle, then this angle is basic consistent with defect parameters.
Test item is as follows: Fig. 1 is R
tand the relation schematic diagram between the radial parameter of weld defect, Fig. 2 is weld defect hoop recognition result schematic diagram, and Fig. 3 is defect of pipeline model and measuring point distribution plan, the displacement time-history curves comparison diagram of Fig. 4 to be pumping signal figure, Fig. 5 be measuring point before and after weld defect.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (4)
1. a method for supersonic guide-wave array detection weld integrity, is characterized in that, comprises the steps:
A, excite L (0,2) Guided in pipe welding seam side, at weld seam both sides placement sensor array;
B, calculate guided wave by transmission coefficient during weld seam, and using its inverse as damage criterion;
The hoop distribution curve of c, drafting damage criterion, utilizes the peak value on this curve to carry out the identification of weld defect parameter.
2. the method for supersonic guide-wave array detection weld integrity according to claim 1, is characterized in that, the sensor array mode in a is uniform arrangement 16 sensors in weld seam both sides, and totally 32 sensors, are labeled as S respectively
1q, S
2q... .S
16q, represent weld seam front end sensors; S
1h, S
2h... .S
16h, end sensor after expression weld seam.
3. the method for supersonic guide-wave array detection weld integrity according to claim 2, is characterized in that, the value that the transmission coefficient in b obtains divided by this sensor record guided wave signals peak value before weld seam for sensor record guided wave signals peak value after weld seam.
4. the method for supersonic guide-wave array detection weld integrity according to claim 1, it is characterized in that, weld defect parameter identification method in c is for choosing first ripple bag analysis before and after weld seam, after definition weld seam, first ripple bag peak A q is transmissivity RT with the ratio of front first the ripple bag peak A h of weld seam, and RT=Ah/Aq, therefore Dindex=1/RT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604399.9A CN105259250A (en) | 2015-09-21 | 2015-09-21 | Method for detecting integrity of weld through ultrasonic guided wave array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604399.9A CN105259250A (en) | 2015-09-21 | 2015-09-21 | Method for detecting integrity of weld through ultrasonic guided wave array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105259250A true CN105259250A (en) | 2016-01-20 |
Family
ID=55099017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510604399.9A Pending CN105259250A (en) | 2015-09-21 | 2015-09-21 | Method for detecting integrity of weld through ultrasonic guided wave array |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105259250A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847252A (en) * | 1981-09-14 | 1983-03-18 | Kubota Ltd | Detecting method for flaw in welded part of reaction tube by ultrasonic flaw detection |
| CN101762633A (en) * | 2008-12-25 | 2010-06-30 | 中国石油天然气股份有限公司 | Rapid detection method for pipeline body defects |
| CN102495141A (en) * | 2011-11-24 | 2012-06-13 | 上海交通大学 | Discontinuous structure positioning method based on transmission coefficient and reflection coefficient |
| CN202994734U (en) * | 2012-12-25 | 2013-06-12 | 深圳市发利构件机械技术服务有限公司 | Pipeline detection system |
| CN103207237A (en) * | 2013-03-04 | 2013-07-17 | 江苏大学 | Detection method of weld joint characteristic guided wave of butt weld |
| CN103217480A (en) * | 2013-03-29 | 2013-07-24 | 杭州浙大精益机电技术工程有限公司 | Ultrasonic guided-wave judging method for pipe cross section loss amount |
| CN103901112A (en) * | 2014-03-07 | 2014-07-02 | 镇江天颐装备科技有限公司 | Sensor device for detecting welding line by ultrasonic guided waves and fixing method |
-
2015
- 2015-09-21 CN CN201510604399.9A patent/CN105259250A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847252A (en) * | 1981-09-14 | 1983-03-18 | Kubota Ltd | Detecting method for flaw in welded part of reaction tube by ultrasonic flaw detection |
| CN101762633A (en) * | 2008-12-25 | 2010-06-30 | 中国石油天然气股份有限公司 | Rapid detection method for pipeline body defects |
| CN102495141A (en) * | 2011-11-24 | 2012-06-13 | 上海交通大学 | Discontinuous structure positioning method based on transmission coefficient and reflection coefficient |
| CN202994734U (en) * | 2012-12-25 | 2013-06-12 | 深圳市发利构件机械技术服务有限公司 | Pipeline detection system |
| CN103207237A (en) * | 2013-03-04 | 2013-07-17 | 江苏大学 | Detection method of weld joint characteristic guided wave of butt weld |
| CN103217480A (en) * | 2013-03-29 | 2013-07-24 | 杭州浙大精益机电技术工程有限公司 | Ultrasonic guided-wave judging method for pipe cross section loss amount |
| CN103901112A (en) * | 2014-03-07 | 2014-07-02 | 镇江天颐装备科技有限公司 | Sensor device for detecting welding line by ultrasonic guided waves and fixing method |
Non-Patent Citations (2)
| Title |
|---|
| HUIXING YUN 等: "Damage detection based on the propagation of longitudinal guided wave in a bimetal composite pipe", 《THEORETICAL & APPLIED MECHANICS LETTERS》 * |
| 尹慧 等: "声波在界面上的反射和透射系数", 《曲阜师范大学学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104007180B (en) | Torsional mode magnetostriction sensor array | |
| CN102589490B (en) | Ultrasonic wave detection device for thinning rate of body in white | |
| CN102877490A (en) | Method for detecting quality of large-diameter tubular pile at low strain | |
| US10307859B2 (en) | Joint part determination method and joint material manufacturing method | |
| CN108318579B (en) | Honeycomb co-curing structure defect ultrasonic A scanning identification method and device | |
| CN104155237A (en) | Detection method for interface bonding strength of aluminum-steel composite material | |
| CN101819183A (en) | Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector | |
| CN104111286B (en) | A kind of velocity of wave for the detection of supersonic welding point and thickness calibration steps | |
| CN105203635A (en) | Surface wave detection method for longitudinal defect on outer surface of small-diameter tube | |
| CN105021715A (en) | Arrayed omnidirectional type horizontal shear modal magnetostrictive transducer | |
| CN105880952A (en) | Production process of longitudinal submerged arc welded pipe for oil and gas transmission | |
| CN106093204A (en) | A kind of phase weighting vector total focus imaging device for forging crack quantitative judge and method | |
| CN103713042B (en) | Based on the weld defects eddy current detection method of k nearest neighbor algorithm | |
| CN114813949A (en) | Ultrasonic guided wave pipeline damage scanning device and detection method based on limited sensor group | |
| CN103760229A (en) | Welding defect giant magnetoresistance vortexing detection method based on supporting vector machine | |
| CN105259250A (en) | Method for detecting integrity of weld through ultrasonic guided wave array | |
| CN202092532U (en) | Inner arc inspecting template | |
| CN103115961A (en) | Waterproof coil overlap joint seam quality detection method and instrument based on B ultrasounds | |
| CN205280658U (en) | Eddy current probe | |
| CN107064311A (en) | A kind of omni-directional A0 mode Lamb wave electromagnet ultrasonic changer | |
| CN103293223A (en) | Characteristic guided wave based butt weld nondestructive testing system | |
| CN106624313A (en) | On-line detecting system and method for spot welding | |
| CN108195934B (en) | Ultrasonic guided wave detection frequency optimization method based on time-frequency analysis | |
| CN201697830U (en) | Device for detecting fatigue damage degree of self-piercing rivet joint of metal sheet through dynamic response | |
| CN103017944B (en) | Measuring method for longitudinal force of welding seam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |