CN104535650A - Phased-array detection method of structure of T-shaped non-parallel wing plate - Google Patents
Phased-array detection method of structure of T-shaped non-parallel wing plate Download PDFInfo
- Publication number
- CN104535650A CN104535650A CN201410831927.XA CN201410831927A CN104535650A CN 104535650 A CN104535650 A CN 104535650A CN 201410831927 A CN201410831927 A CN 201410831927A CN 104535650 A CN104535650 A CN 104535650A
- Authority
- CN
- China
- Prior art keywords
- wing plate
- detection
- sensitivity
- defect
- detection method
- 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
Abstract
The invention discloses a phased-array detection method of the structure of a T-shaped non-parallel wing plate. The phased-array detection method is characterized in that a phased-array ultrasonic detection technology is adopted for replacing the conventional ultrasonic detection method for the structure of the T-shaped non-parallel wing plate; in the structure of the T-shaped non-parallel wing plate, since the bottom surface of the wing plate is not smooth, the difficulty of the conventional ultrasonic detection is high, and the wave of the defect on the same height with the bottom surface of the wing plate is difficultly distinguished from the bottom wave so as to be easily ignored or subjected to missed detection, so that safety accidents are caused; and when the conventional ray detection is implemented on the non-parallel wing plate structure, the conditions of confusion and missed detection and the like are easily caused by non-uniform darkness. The phased-array detection method disclosed by the invention has the advantages that the internal defects are distinguished from reflecting signals of the bottom surface, the size of the defects also can be measured, the final detection sensitivity can reach phi1 long-horizontal hole, so that the detection cost is effectively reduced and the detection period is effectively shortened and the like.
Description
[technical field]
The present invention relates to a kind of detection method, be specifically related to a kind of T-shaped non-parallel wing plate structure phased array detection method.
[background technology]
Known, T-shaped non-parallel wing plate structure due to wing plate bottom surface not parallel, conventional Ultrasound detection difficulty is comparatively large, is in the defect of sustained height, is difficult to distinguish with end ripple with wing plate bottom surface, is easily left in the basket or undetected, causes security incident; Conventional ray detection, for non-parallel wing plate structure, because blackness is uneven, also easily causes the obscuring of defect, the situation such as undetected.
As shown in Figure 1, the wing plate top 1 of wing plate is not parallel with wing plate bottom 2, web 3 and wing plate can be machine work integrative-structure, also can be shaping for edge weld seam welding, on wing plate, A position is provided with the horizontal through hole of φ 3, for the detection of this horizontal through hole, conventional Ultrasound adopts normal probe to detect on wing plate top 1 usually, be in B point on same level line with A position and the reflection wave signal of the horizontal through hole in A position can be disturbed with the reflection wave that A position is in the C point of same upright position, D, E two place web wing plate transition position also can produce undesired signal, defect is caused not easily to be differentiated or undetected.
For conventional ray detection, adopt vertically downward transillumination method time, the horizontal through hole of A position can with on the left of A near uniform thickness position blackness identical, cause identifying difficulty, again can be excessive due to scanning thickness for the defect on wing plate between D, E, cause sensitivity decrease, cannot differentiate.
Conventional Dynamic Non-Destruction Measurement also comprises Magnetic testing, Liquid penetrant testing, EDDY CURRENT etc., and wherein Magnetic testing, Liquid penetrant testing are only applicable to the nearly surperficial detection of workpiece, and EDDY CURRENT is used for the detection of thin-wall pipes.
[summary of the invention]
For overcoming the deficiency existed in background technology, the invention provides a kind of T-shaped non-parallel wing plate structure phased array detection method, the present invention adopts phased array ultrasonic detection technology instead of conventional ultrasonic to T-shaped non-parallel wing plate structure detection method, specifically comprise sensitivity adjustment method and end ripple and defect waves differentiating method, detection sensitivity can reach the long cross-drilled hole of φ 1, effectively reduces testing cost and promotes sense cycle etc.
For realizing goal of the invention as above, the present invention adopts technical scheme as described below:
A kind of T-shaped non-parallel wing plate structure phased array detection method, utilize the inherent vice of the non-parallel wing plate structure of phased array ultrasonic detection Technique on T type to detect, distinguished by the reflected signal of inherent vice and bottom surface, detection method specifically comprises the steps:
One, phased array detection sensitivity regulates:
Adjustment of sensitivity is divided into two kinds of modes according to wing plate maximum gauge T < 30mm and T >=30mm, wherein as T < 30mm, sensitivity is set to 80% of the maximum reflection ripple of the horizontal through hole in T/2 place, as T >=30mm, the TCG calibration curve of the horizontal through hole of suitable diameter should be made according to acceptance requirement, using 80% of the maximum reflection ripple of the horizontal through hole of suitable diameter between the T/4-3T/4 after TCG calibration curve as detection sensitivity, 6dB can be improved as Scanning sensitivity during scanning, but former detection sensitivity to be returned to during final qualification defect,
Two, the differentiation of end ripple and defect waves:
Connect step, the fan-shaped display mode of phased array ultrasonic detection technology makes Flaw display and end ripple be presented in same picture, and due to the singularity of T-shaped non-parallel wing plate structure, the bottom of wing plate and defect may be on same level line, is difficult to distinguish; In fan-shaped display, gate scope should be turned down as far as possible, be as the criterion so that reflecting body waveform can be entangled, if have two or more defect on the same level line of gate scope, angle cursor should be utilized to measure one by one, and record reflecting body horizontal level and vertical depth, contrast by carrying out measurement to the position of each reflecting body and workpiece own form correspondence position, thus get rid of workpiece self bottorm echo, search out defect waves, then adjust corresponding sensitivity acceptance evaluation according to acceptance requirement.
Described T-shaped non-parallel wing plate structure phased array detection method, the diameter of described horizontal through hole is arranged according to acceptance requirement.
Adopt technical scheme as above, the present invention has superiority as described below:
The T-shaped non-parallel wing plate structure phased array detection method of one of the present invention, the present invention adopts phased array ultrasonic detection technology instead of conventional ultrasonic to T-shaped non-parallel wing plate structure detection method, T-shaped non-parallel wing plate structure due to wing plate bottom surface not parallel, conventional Ultrasound detection difficulty is larger, the defect of sustained height is in wing plate bottom surface, be difficult to distinguish with end ripple, be easily left in the basket or undetected, cause security incident; Conventional ray detection is for non-parallel wing plate structure, because blackness is uneven, also easily cause the obscuring of defect, the situation such as undetected, the reflected signal of inherent vice and bottom surface is distinguished by the present invention, the size of defect can also be measured, final detection sensitivity can reach the long cross-drilled hole of φ 1, effectively reduces testing cost and promotes sense cycle etc.
[accompanying drawing explanation]
Fig. 1 is the structural representation of T-shaped non-parallel wing plate;
Fig. 2 is the detection schematic diagram of T-shaped non-parallel wing plate structure;
Fig. 3 is the fan sweeping figure that the maximum echo of the horizontal through hole in left side is corresponding;
Fig. 4 is the fan sweeping figure that the horizontal through hole right hand edge echo in left side is corresponding;
Fig. 5 is the fan sweeping figure that the horizontal through hole left hand edge echo in left side is corresponding;
Fig. 6 is the fan sweeping figure that the maximum echo of the horizontal through hole in right side is corresponding;
Fig. 7 is the fan sweeping figure that the horizontal through hole right hand edge echo in right side is corresponding;
Fig. 8 is the fan sweeping figure that the horizontal through hole left hand edge echo in right side is corresponding;
Fig. 9 is the fan sweeping figure that the echo of wing plate bottorm echo 1 is corresponding;
Figure 10 is the fan sweeping figure that the echo of wing plate bottorm echo 2 is corresponding;
In the drawings: 1, wing plate top; 2, wing plate bottom; 3, web; 4, the horizontal through hole of left side φ 3; 5, bottorm echo A; 6, bottorm echo B; 7, the horizontal through hole of right side φ 3; 8, pop one's head in.
[embodiment]
Can explain the present invention in more detail by the following examples, the present invention is not limited to the following examples;
The T-shaped non-parallel wing plate structure phased array detection method of one by reference to the accompanying drawings described in 1, the inherent vice of the non-parallel wing plate structure of phased array ultrasonic detection Technique on T type is utilized to detect, the reflected signal of inherent vice and bottom surface is distinguished, final detection sensitivity can reach the long cross-drilled hole of φ 1, higher than existing ultrasonic technique, detection method specifically comprises the steps:
One, phased array detection sensitivity regulates:
Adjustment of sensitivity is divided into two kinds of modes according to wing plate maximum gauge T < 30mm and T >=30mm, wherein as T < 30mm, sensitivity is set to 80% of the maximum reflection ripple of the horizontal through hole in T/2 place, and the diameter of described horizontal through hole is arranged according to acceptance requirement; As T >=30mm, the TCG calibration curve of the horizontal through hole of suitable diameter should be made according to acceptance requirement, using 80% of the maximum reflection ripple of the horizontal through hole of suitable diameter between the T/4-3T/4 after TCG calibration curve as detection sensitivity, 6dB can be improved during scanning as Scanning sensitivity, but former detection sensitivity will be returned to during final qualification defect;
Two, the differentiation of end ripple and defect waves:
Connect step, the fan-shaped display mode of phased array ultrasonic detection technology makes Flaw display and end ripple be presented in same picture, and due to the singularity of T-shaped non-parallel wing plate structure, the bottom of wing plate and defect may be on same level line, is difficult to distinguish; In fan-shaped display, gate scope should be turned down as far as possible, be as the criterion so that reflecting body waveform can be entangled, if have two or more defect on the same level line of gate scope, angle cursor should be utilized to measure one by one, and record reflecting body horizontal level and vertical depth, contrast by carrying out measurement to the position of each reflecting body and workpiece own form correspondence position, thus get rid of workpiece self bottorm echo, search out defect waves, then adjust corresponding sensitivity acceptance evaluation according to acceptance requirement.
By reference to the accompanying drawings 2 ~ 10, the specific embodiment of the present invention is:
As shown in Figure 2, wing plate arranges the T-shaped non-parallel wing plate structure of 2 horizontal through holes of φ 3, thickness T=40mm, Fig. 3 ~ 10 are the analytic process of defect and end ripple, by the position of the horizontal through hole of left side φ 34 can be obtained to the analysis of accompanying drawing 3 ~ 5 at probe 8 center 12.07mm to the left, 15.62mm on the lower side, size is that 13.09-9.91=3.18mm and actual result are coincide; Analyzing the position that can obtain the horizontal through hole of right side φ 37 by Fig. 6 ~ 8 is probe 8 center 12.20mm to the left, 26.35mm on the lower side, and size is that 13.09-9.91=3.18 and actual result are coincide; Fig. 9 and 10 is wing plate bottorm echo A5 and bottorm echo B6 signal, also conforms to true form through measuring.
Further, select 4 kinds of test blocks, 8 artificial defects detect:
Corresponding phased array detection case is as shown in the table, and be wherein set to (x, y)=(0,0) point with workpiece wing plate upper surface midpoint, x is horizontal direction, is just to the right, and y is vertical direction, is just upwards.
Defects detection record sheet
Can find out the location of defect and quantitatively all more accurate according to actual testing result, defect quantitative maximum error for test block 4 hole 1, error reaches 1.28mm, defect location maximum error for test block 3 hole 3 (45,-15) one group, error is (1.07 ,-0.56), and all the other defectoscopy errors are all less.
Phased-array ultrasonic detection technique has following features compared with conventional lossless detection technique:
(1) sensing range is wide: the probe that ultrasound phase-control array 1 system uses is multiple array structure, does not need to change probe, just can realize the multi-angle to institute Region Of Interest, multi-direction scanning, making whole detection system have greater flexibility by arranging software parameter; The flaw detectability that direction is difficult to distinguish strengthens;
(2) dirigibility is good, and efficiency is high: phased-array technique can carry out electron scanning, a quantitative levels faster than common raster scanning; Multiple application just can be contained single limited unlike conventional ultrasound probe application with a phased array probe;
(3) multiple display modes: phased array detects can carry out the multiple scanning display modes such as S sweeps, A, B, C, D, E sweep, and enhances the accuracy that defect quantitative is decided to be.Multiple defect can be shown in a width S scintigram, non-interference;
(4) data electronic record: phased array detects and can preserve data and image, facilitates later off-line analysis;
Exactly because phased-array ultrasonic detection technique has these features, the phased array of T-shaped non-parallel wing plate structure is detected and can be realized, comprises the differentiation of the bottorm echo on flaw echo and same level line, and locate, quantitative etc.
Part not in the detailed description of the invention is prior art.
The embodiment selected in this article in order to open object of the present invention, currently thinks to be suitable for, but it is to be understood that the present invention is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.
Claims (2)
1. a T-shaped non-parallel wing plate structure phased array detection method, it is characterized in that: utilize the inherent vice of the non-parallel wing plate structure of phased array ultrasonic detection Technique on T type to detect, distinguished by the reflected signal of inherent vice and bottom surface, detection method specifically comprises the steps:
One, phased array detection sensitivity regulates:
Adjustment of sensitivity is divided into two kinds of modes according to wing plate maximum gauge T < 30mm and T >=30mm, wherein as T < 30mm, sensitivity is set to 80% of the maximum reflection ripple of the horizontal through hole in T/2 place, as T >=30mm, the TCG calibration curve of the horizontal through hole of suitable diameter should be made according to acceptance requirement, using 80% of the maximum reflection ripple of the horizontal through hole of suitable diameter between the T/4-3T/4 after TCG calibration curve as detection sensitivity, 6dB can be improved as Scanning sensitivity during scanning, but former detection sensitivity to be returned to during final qualification defect,
Two, the differentiation of end ripple and defect waves:
Connect step, the fan-shaped display mode of phased array ultrasonic detection technology makes Flaw display and end ripple be presented in same picture, and due to the singularity of T-shaped non-parallel wing plate structure, the bottom of wing plate and defect may be on same level line, is difficult to distinguish; In fan-shaped display, gate scope should be turned down as far as possible, be as the criterion so that reflecting body waveform can be entangled, if have two or more defect on the same level line of gate scope, angle cursor should be utilized to measure one by one, and record reflecting body horizontal level and vertical depth, contrast by carrying out measurement to the position of each reflecting body and workpiece own form correspondence position, thus get rid of workpiece self bottorm echo, search out defect waves, then adjust corresponding sensitivity acceptance evaluation according to acceptance requirement.
2. T-shaped non-parallel wing plate structure phased array detection method according to claim 1, is characterized in that: the diameter of described horizontal through hole is arranged according to acceptance requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831927.XA CN104535650B (en) | 2014-12-29 | 2014-12-29 | A kind of T-shaped non-parallel wing plate structure phased array detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410831927.XA CN104535650B (en) | 2014-12-29 | 2014-12-29 | A kind of T-shaped non-parallel wing plate structure phased array detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104535650A true CN104535650A (en) | 2015-04-22 |
| CN104535650B CN104535650B (en) | 2017-09-08 |
Family
ID=52851220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410831927.XA Expired - Fee Related CN104535650B (en) | 2014-12-29 | 2014-12-29 | A kind of T-shaped non-parallel wing plate structure phased array detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104535650B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181798A (en) * | 2015-08-05 | 2015-12-23 | 中冶建筑研究总院有限公司 | Construction steel structure weld ultrasonic phased array detection technology |
| CN106770664A (en) * | 2016-11-22 | 2017-05-31 | 中国计量大学 | A kind of method that edge defect detection is improved based on total focus imaging algorithm |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403510A (en) * | 1980-10-23 | 1983-09-13 | Dewalle Stewart | Apparatus and method for ultrasonic inspection |
| EP0619488A1 (en) * | 1993-04-07 | 1994-10-12 | Intertechnique | Ultrasonic method and apparatus for the detection and the identification of a contaminant for example frost, on the surface of a structure |
| US20070084288A1 (en) * | 2005-10-14 | 2007-04-19 | Olympus Ndt | Ultrasonic fault detection system using a high dynamic range analog to digital conversion system |
| CN101135672A (en) * | 2007-08-11 | 2008-03-05 | 青海省电力科学试验研究院 | Prop porcelain insulator and porcelain bushing ultrasonic wave detecting method |
| CN101551361A (en) * | 2009-05-25 | 2009-10-07 | 天津钢管集团股份有限公司 | Device for detecting lamination defect with ultrasonic wall thickness inspection and detecting method thereof |
| CN201697895U (en) * | 2010-02-26 | 2011-01-05 | 中国海洋石油总公司 | Full-automatic phased-array ultrasonic detection device |
| CN203881715U (en) * | 2014-05-20 | 2014-10-15 | 北京中唐电工程咨询有限公司 | Ultrasonic flaw-detecting device for inclined T-type blade root of large-scale turbine |
| US20140338453A1 (en) * | 2013-05-17 | 2014-11-20 | The Boeing Company | Porosity Inspection System for Composite Structures with Non-Parallel Surfaces |
-
2014
- 2014-12-29 CN CN201410831927.XA patent/CN104535650B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4403510A (en) * | 1980-10-23 | 1983-09-13 | Dewalle Stewart | Apparatus and method for ultrasonic inspection |
| EP0619488A1 (en) * | 1993-04-07 | 1994-10-12 | Intertechnique | Ultrasonic method and apparatus for the detection and the identification of a contaminant for example frost, on the surface of a structure |
| US20070084288A1 (en) * | 2005-10-14 | 2007-04-19 | Olympus Ndt | Ultrasonic fault detection system using a high dynamic range analog to digital conversion system |
| CN101135672A (en) * | 2007-08-11 | 2008-03-05 | 青海省电力科学试验研究院 | Prop porcelain insulator and porcelain bushing ultrasonic wave detecting method |
| CN101551361A (en) * | 2009-05-25 | 2009-10-07 | 天津钢管集团股份有限公司 | Device for detecting lamination defect with ultrasonic wall thickness inspection and detecting method thereof |
| CN201697895U (en) * | 2010-02-26 | 2011-01-05 | 中国海洋石油总公司 | Full-automatic phased-array ultrasonic detection device |
| US20140338453A1 (en) * | 2013-05-17 | 2014-11-20 | The Boeing Company | Porosity Inspection System for Composite Structures with Non-Parallel Surfaces |
| CN203881715U (en) * | 2014-05-20 | 2014-10-15 | 北京中唐电工程咨询有限公司 | Ultrasonic flaw-detecting device for inclined T-type blade root of large-scale turbine |
Non-Patent Citations (2)
| Title |
|---|
| 常少文: "焊接钢管超声波自动探伤检测系统的软件设计与应用", 《焊管》 * |
| 李衍: "ASME 法规对超声TOFD 法的最新规定介绍", 《无损检测》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181798A (en) * | 2015-08-05 | 2015-12-23 | 中冶建筑研究总院有限公司 | Construction steel structure weld ultrasonic phased array detection technology |
| CN105181798B (en) * | 2015-08-05 | 2017-12-22 | 中冶建筑研究总院有限公司 | A kind of construction steel structure welding line ultrasonic phased array characterization processes |
| CN106770664A (en) * | 2016-11-22 | 2017-05-31 | 中国计量大学 | A kind of method that edge defect detection is improved based on total focus imaging algorithm |
| CN106770664B (en) * | 2016-11-22 | 2019-05-07 | 中国计量大学 | A method of edge defect detection is improved based on total focus imaging algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104535650B (en) | 2017-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016155403A1 (en) | Ultrasonic detection and locating method and device based on tofd and phased array | |
| CN105699492B (en) | A kind of ultrasonic imaging method for weld seam detection | |
| CN108956761A (en) | Steel plate all standing ultrasonic detection device and method | |
| CN102539532B (en) | Ultrasonic C scanning imaging method based on two-dimensional neighborhood synthetic aperture focusing | |
| US9759692B2 (en) | System and method of dynamic gating in non-destructive weld inspection | |
| CN106324095B (en) | Longitudinal wave straight probe full-acoustic-path non-blind-zone flaw detection method | |
| CN107576729B (en) | Ultrasonic phased array-based weld defect detection and rapid extraction system and method | |
| CN105973990B (en) | A kind of Incline Crack TOFD quantitative detecting method based on geometrical relationship | |
| CN109239081B (en) | Weld quality parameter detection method based on structured light and visual imaging | |
| CN111398426B (en) | Measurement and compensation calibration method for full-focusing phased array three-dimensional ultrasonic field | |
| CA2900298C (en) | Method and device for improving the saft analysis when measuring irregularities | |
| CN104698089A (en) | Ultrasonic relative time propagation technology suitable for inclined crack quantifying and imaging | |
| CN106501377B (en) | A method of R corner structure flaw size is detected using ultrasonic phase array | |
| CN108414623B (en) | Resistance spot welding quality evaluation method based on ultrasonic scanning imaging | |
| CN108956775A (en) | A kind of high-sensitivity ultrasonic detection method of engine complex profile bearing part | |
| CN202837253U (en) | Test block assembly for train wheel ultrasonic flaw detection | |
| CN106706759B (en) | Method for evaluating defects of welding joint of P92 steel main steam pipeline of ultra-supercritical generator set | |
| CN103529123B (en) | Dual-probe manual ultrasonic detection method | |
| CN103543208A (en) | Method for reducing near surface blind region in TOFD (Time of Flight Diffraction) detection based on spectral analysis principle | |
| CN106546176A (en) | A kind of rail outward appearance physical dimension and surface defect detection apparatus | |
| CN104535650A (en) | Phased-array detection method of structure of T-shaped non-parallel wing plate | |
| CN105510442A (en) | Dynamic linkage focus detection method adopting multiple phased array probes | |
| CN102706960A (en) | Ultrasonic phased array detection system for transitional circular arc inside cavity | |
| US9829468B2 (en) | Method and device for detecting defects within a test object | |
| CN203148899U (en) | Acoustic detection system for cast iron material defects |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20211229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |