CN103217486B - Angle probe ultrasonic field transverse sound pressure distribution measuring method - Google Patents
Angle probe ultrasonic field transverse sound pressure distribution measuring method Download PDFInfo
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- CN103217486B CN103217486B CN201310100737.6A CN201310100737A CN103217486B CN 103217486 B CN103217486 B CN 103217486B CN 201310100737 A CN201310100737 A CN 201310100737A CN 103217486 B CN103217486 B CN 103217486B
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- 239000000523 sample Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000010606 normalization Methods 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 abstract 2
- 238000002604 ultrasonography Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
The invention relates to an angle probe ultrasonic field transverse sound pressure distribution measuring method used for rapidly determining sound pressure distribution at each point of an ultrasonic field during ultrasonic wave detection. The method comprises the steps that: a detection system composed of an ultrasonic flaw detector and an ultrasonic angle probe is adopted; in a detection test block, with a 1/4 arc-shaped through hole, a probe position is adjusted to a maximal reflection echo position; with the maximal reflection echo position as a base point, the probe is moved left and right, and the offset distances of the probe relative to the through hole and corresponding reflection echo heights are recorded; the reflection echo height is subjected to a normalization treatment with the reflection echo height at a certain offset distance as a reference; According to the relevance of the normalized echo height and the relative offset distance between the probe and the through hole, a transverse sound pressure distribution diagram is obtained; and according to the transverse sound pressure distribution diagram, position parameters of the probe relative to the through hole, probe K value, and probe frontier, an ultrasonic probe transverse half-spread angle is obtained by calculation. The method provided by the invention is used for detecting angle probe ultrasonic field transverse sound pressure.
Description
Technical field
The present invention relates to a kind of measuring method of angle probe ultrasonic field horizontal acoustic pressure distribution, for fast in ultrasound examination
Speed measures the distribution of ultrasonic field each point acoustic pressure.
Background technology
Ultrasonic Nondestructive is the Dynamic Non-Destruction Measurement being widely used at present.The ultrasonic field of ultrasound probe transmitting, tool
There is special structure, only when defect is located in ultrasonic field, be possible to be found.Pop one's head in during ultrasound examination each scanning
Overlap length, acoustic beam is to by the level of coverage in scanning section, being required for considering the architectural characteristic of horizontal ultrasonic field of popping one's head in.As
When carrying out steel plate butt weld automatic scanning, after only measuring the horizontal acoustic pressure distribution of probe, just can be given and take into account scanning efficiency
Specific probe scanning degree of overlapping with testing result.But in practical application, also there is not special detection angle probe ultrasonic field horizontal
To the method for acoustic pressure distribution, the probe scanning degree of overlapping requiring according to standard, carry out formal detection test, in certain situation
Under cause detection efficiency low.
Therefore, in industrial ultrasound examination, for taking into account detection efficiency and Detection results, need to know the super of probe generation
The horizontal acoustic pressure of sound field is distributed.Process provides a kind of measuring method of angle probe ultrasonic field horizontal acoustic pressure distribution.
Content of the invention
It is an object of the invention to provide a kind of workable, simple and practical, horizontal sound of angle probe ultrasonic field of efficiency high
The measuring method of pressure distribution.
The present invention adopts the following technical scheme that
The present invention includes operations described below step:
Using the detecting system being made up of with ultrasonic angle probe ultrasonic reflectoscope, detect 1/4 circular arc through hole in test block
Adjustment probe positions are to reflection echo maximum；
With reflection echo maximum as basic point, move left and right probe, record probe is with respect to the offset distance of described through hole
And corresponding reflection echo height；
Will reflect back into wave height with the reflection echo of certain offset distance is highly that reference is normalized；
According to the echo height after normalization and the dependency of probe and the relative offset distance of through hole, obtain horizontal acoustic pressure
Scattergram；
According to horizontal acoustic pressure scattergram, the location parameter of probe opposing through-bores, probe k value and Front distance, calculate
The horizontal half-angle of spread of ultrasound probe.
The positive effect of the present invention is as follows:
The present invention can be used for detecting the distribution of angle probe ultrasonic field horizontal acoustic pressure, verify the overlap length of each scanning of pop one's head in
Acoustic beam, to by the level of coverage in scanning section, taking into account detection efficiency and Detection results, improves detection quality.
The present invention has operability, simple and practical, and efficiency is higher.
Brief description
Fig. 1 is the structural representation of test block used by the present invention；
Fig. 2 is the right view of test block used by the present invention；
Fig. 3 is the horizontal acoustic pressure scattergram of the embodiment of the present invention 1；
In the accompanying drawings, 1 test block, 2 arc-shaped through-holes.
Specific embodiment
Embodiment 1
Referring to the drawings 1 ~ 2, test block 1 used herein is long (l1) 200mm, width (w) 100mm, the length of height (h) 50mm
Cube, it is internally provided with the through hole 2 of 1/4 circular arc.A diameter of 1mm of described through hole 2, the radius of the circle of curvature is
50mm.
Ultrasonic reflectoscope used in the present invention is hs616e common a type digital ultrasonic flaw detector.
Used in the present invention probe is popped one's head in for 2.5p9 × 9k2.
Using the detecting system being made up of with ultrasonic angle probe ultrasonic reflectoscope, detect 1/4 circular arc through hole in test block,
Adjustment probe positions are to reflection echo maximum；
It is 0mm with reflection echo maximum for basic point, move left and right probe, record probe is with respect to the offset distance of through hole
And corresponding reflection echo height；
Will reflect back into wave height with the reflection echo of certain offset distance is highly that reference is normalized；
According to the echo height after normalization and the dependency of probe and the relative offset distance of through hole, obtain horizontal acoustic pressure
Scattergram, is shown in accompanying drawing 3；When there being highest echo acoustic pressure, instrument display sound path is 50mm, is produced when by probe offset 8mm
Give birth to relatively low reflection echo.Obtain the horizontal half-angle of spread θ=atan(8/50 popping one's head in)=9 °.
When ultrasonic beam is propagated in test block, run into the round tube hole within test block, ultrasonic beam is reflected, and moves left and right
Probe detects round tube hole with secondary acoustic beam, and reflection echo is highly different.Due to the reflection in acoustic pressure and ultrasonic reflectoscope oscillography screen
Echo height is directly proportional, and acoustic pressure primary concern is that wave height relatively, therefore after reflection echo is highly normalized, does
Go out the echo height after normalization and be acoustic beam horizontal acoustic pressure scattergram with the figure of probe opposing through-bores side-play amount.
The using effect of the present invention:
The steel plate butt weld being 3400 × 6000 × 70mm to certain specification carries out ultrasound examination, and probe selects 2.5p13
× 13k1, ultrasonic reflectoscope is cts-9003 common a type digital ultrasonic flaw detector, and probe scanning mode is automatically to sweep
Look into.According to the requirement of examination criteria jb/t4730.3-2005, probe scanning coverage rate is not less than the 15% of probe width, this probe
Width is 15mm, i.e. overlapping scanning 2mm every time, then effective scanning width of scanning every time is 13mm.Test block using the present invention
Horizontal acoustic pressure distribution to this probe is measured, and takes the 80% of the strongest acoustic pressure as edge, then beam width is 17mm, that is, visit
Head interval 2mm scanning still has very high Scanning sensitivity, but each scanning width is 17mm, and scanning efficiency is original 1.3 times,
Balance the contradiction of detection efficiency and Detection results.
Claims (1)
1. a kind of measuring method of angle probe ultrasonic field horizontal acoustic pressure distribution is it is characterised in that it includes operations described below step:
Using the detecting system being made up of with ultrasonic angle probe ultrasonic reflectoscope, detect 1/4 circular arc through hole adjustment in test block
Probe positions are to reflection echo maximum；
With reflection echo maximum as basic point, move left and right probe, record probe is with respect to the offset distance of described through hole and phase
Corresponding reflection echo height；
Will reflect back into wave height with the reflection echo of certain offset distance is highly that reference is normalized；
According to the echo height after normalization and the dependency of probe and the relative offset distance of through hole, obtain horizontal acoustic pressure distribution
Figure；
According to horizontal acoustic pressure scattergram, the location parameter of probe opposing through-bores, probe k value and Front distance, calculate ultrasonic
The horizontal half-angle of spread of ripple probe.
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| CN201310100737.6A CN103217486B (en) | 2013-03-27 | 2013-03-27 | Angle probe ultrasonic field transverse sound pressure distribution measuring method |
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| CN201310100737.6A CN103217486B (en) | 2013-03-27 | 2013-03-27 | Angle probe ultrasonic field transverse sound pressure distribution measuring method |
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| CN103217486A CN103217486A (en) | 2013-07-24 |
| CN103217486B true CN103217486B (en) | 2017-02-01 |
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| CN104990983B (en) * | 2015-06-25 | 2017-12-26 | 国电锅炉压力容器检验中心 | A kind of bolt transverse wave velocity measuring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185837A (en) * | 1996-03-28 | 1998-06-24 | 三菱电机株式会社 | Supersonic flaw detector and its method |
| JPH10282069A (en) * | 1997-04-07 | 1998-10-23 | Nippon Steel Corp | Ultrasonic flaw detector and sensitivity calibration method thereof |
| CN201207045Y (en) * | 2008-03-12 | 2009-03-11 | 河北省电力研究院 | Ultrasonic flaw detection briquette |
| CN101819183A (en) * | 2010-05-06 | 2010-09-01 | 符丰 | Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector |
| CN102818844A (en) * | 2012-07-25 | 2012-12-12 | 中国石油集团渤海石油装备制造有限公司 | Transverse wave detection method for defects of spiral weld steel pipe body and flaw detection apparatus used in same |
-
2013
- 2013-03-27 CN CN201310100737.6A patent/CN103217486B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185837A (en) * | 1996-03-28 | 1998-06-24 | 三菱电机株式会社 | Supersonic flaw detector and its method |
| JPH10282069A (en) * | 1997-04-07 | 1998-10-23 | Nippon Steel Corp | Ultrasonic flaw detector and sensitivity calibration method thereof |
| CN201207045Y (en) * | 2008-03-12 | 2009-03-11 | 河北省电力研究院 | Ultrasonic flaw detection briquette |
| CN101819183A (en) * | 2010-05-06 | 2010-09-01 | 符丰 | Method for calibrating large-angle or small-angle longitudinal wave angle probe for ultrasonic fault detector |
| CN102818844A (en) * | 2012-07-25 | 2012-12-12 | 中国石油集团渤海石油装备制造有限公司 | Transverse wave detection method for defects of spiral weld steel pipe body and flaw detection apparatus used in same |
Non-Patent Citations (1)
| Title |
|---|
| 超声相控阵检测缺陷的灵敏度试验;第2节，附图1;《无损检测》;20081231;第30卷(第10期);第704-706页，尤其是第2节，附图1 * |
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Inventor after: Liu Changfu Inventor after: Wang Qiang Inventor after: Xia Yanwei Inventor after: Dai Xiaohao Inventor after: Zhao Jifeng Inventor before: Liu Changfu Inventor before: Wang Qiang Inventor before: Dai Xiaohao Inventor before: Zhao Jifeng |
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