CN107490628A - Phased array sector scanning reference sensitivity and the method to set up of angle gain compensation - Google Patents
Phased array sector scanning reference sensitivity and the method to set up of angle gain compensation Download PDFInfo
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- 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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/30—Arrangements for calibrating or comparing, e.g. with standard objects
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- 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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/32—Arrangements for suppressing undesired influences, e.g. temperature or pressure variations, compensating for signal noise
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- 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
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to the phased array ultrasonic detection in field of non destructive testing, and in particular to phased array sector scanning reference sensitivity and the method to set up of angle gain compensation.It is to be connected phased array supersonic equipment with phased array probe, select the sectoring software in equipment, weld seam through-thickness is divided into several subregions by weld seam simulation softward, it is determined that sectoring angular range and used a few subwaves that each subregion each uses detect, reference sensitivity and angle gain is set to compensate by artificial reflector corresponding with each subregion scope in reference block.The inventive method novel and unique, simple to operate, practical, radiationless, pollution-free, detection efficiency is high, uses encoder record testing result, is shown with image format, be visual and understandable, quantitative accuracy is high, reduces the probability of erroneous judgement.The application of reference sensitivity and angle gain compensation method to set up when suitably detecting welding point as phased array supersonic sectoring.
Description
Technical field
The present invention relates to the phased array ultrasonic detection in field of non destructive testing, and in particular to the spirit of phased array sector scanning benchmark
Sensitivity and the method to set up of angle gain compensation.
Background technology
Bearing device includes various boilers, pressure vessel and pressure pipeline etc., belongs to important production equipment, with national economy
Production and people's daily life have very close contact.But bearing device often has high temperature, high pressure and poisonous medium
The features such as, once accident occurs, consequence is extremely serious.To avoid the quality accident being likely to occur, bearing device is being manufactured, made
With, examine etc. and to widely apply non-destructive testing technology in link.
Phased array ultrasonic detection technology is new direction, the new power of non-destructive testing technology development both at home and abroad at present, is at first
One of non-destructive testing technology entered.Phased array supersonic technology is the acoustic beam using electronically control phased array supersonic probe come real
Existing ultrasonic wave transmitting, the method received.Phased array supersonic probe chip is made up of multiple small chips, and each small chip is also known as
Array element.Each array element can be excited by independent, and apply different time delays, and the ultrasonic waveform of all array element transmittings is into one
Overall wavefront, dynamic focusing can be realized, and shape and the direction of transmitting supersonic beam can be efficiently controlled.It is determination defect
Shape, size and Orientation provide the ability bigger than single or multiple conventional ultrasonic probes systems.Phased array supersonic is examined
Survey technology has imaging function, and testing result is shown with image format, is divided into A sweep, B-scan, S scannings, E scanner unis P scannings
Deng visual and understandable, the data of storage have dynamic playback function, and can also record scanning position.These functions are conventional super
Sound detection technology is difficult to.
Phased array ultrasonic detection technology starts to apply in China, such as detects pipe ring in Pipeline
Weld seam, in Anhui six, peace and Anqing thermal power plant detection thin-walled small diameter tube girth joint, justify to turbine blade root and turbine
The detection of disk, train axle detection, the detection of nuclear power station main pump thermal insulation board etc., have huge application space, embody phase
Control the superiority of battle array ultrasound detection.
Phased array ultrasonic detection technology passes through in actually detected application sweeps frequently with sectoring technology and encoder record
Look into position to be detected, this detection mode advantage is obvious, i.e.,：(1) multiple angular sectors Scanning Detctions, scanning inspection are used
It is big to survey scope, detection efficiency is high, speed is fast；(2) test position is recorded using encoder in real time；(3) record inspection in real time can be realized
Survey result；(4) the detection image data of storage can be with dynamic playback.
But phased array supersonic carries out straight line using sectoring and encoder record scanning position parallel to bead direction
The detection mode of motion there is also it is fatal the shortcomings that, this shortcoming influence phased array ultrasonic detection technology application, i.e.,：
(1) there is saturation state in image wave amplitude during the detection data analysis of storage.
Often there is saturation state in image wave amplitude during the detection data analysis of storage.So-called wave amplitude saturation state is exactly wave height
Amplitude more than height all over the screen does not record, but the color of image shown is very deep, by the filter process of analysis software not, gives
Defects assessment increases difficulty, can not be evaluated.The amplitude of phased array supersonic equipment height all over the screen is substantially both at home and abroad at present
100%th, 220%, 260% and 800% etc., wave amplitude saturated phenomenon just occurs more than above-mentioned value.Image saturation state is examined
Sensitivity is influenceed, and amplitude could be lowered by only changing sensitivity, could solve image saturation problem.Phased array supersonic equipment
After preserving detection data, change range of sensitivity very little in analysis, some equipment is only -6dB~+6dB, and some equipment is basic
Do not allow to change, can not meet the requirement of defect analysis evaluation, can only again detect, increase testing cost, reduce detection
Efficiency.Because substantially by evaluation line, quantitative line and sentence scrap wire (areas of Ji An I, IIth area and IIIth area) when being detected using sectoring
Assessment is carried out, wave amplitude is in saturation state and does not judge which area is defect be in, so can not be evaluated to defect.
(2) reference sensitivity and angle gain compensation are problematic when phased array supersonic is detected using sectoring.
The detection of phased array supersonic sectoring at present is essentially all using a reference sensitivity and an angular range
Angle gain compensated curve be configured, be all that setting is detected simultaneously on a passage using primary wave and secondary wave
, and show on an interface.This set easily causes reference sensitivity and angle gain compensates inaccurate, bigger than normal show
As detection sensitivity is higher when causing actually detected, and wave amplitude saturated phenomenon occur in the detection image data for easily causing collection.
Such as the weld seam that detection thickness is T=30mm is detected using phased array supersonic sectoring, using phased array probe
Parameter：Frequency is 5MHz, (array number n) is that 32 chips, two array element centreline spaces away from (p) are 0.5mm to chip number, and array element is wide
Degree (e) is 0.4mm, and the gap (g) between two array elements is 0.1mm.16 (i.e. 9-24) individual chips are excited during detection, in RB-3 test blocks
Reference sensitivity and angle gain compensated curve are set.
Set and detected simultaneously using primary wave and secondary wave, fan angle range is 38 °~70 °, selection make away from
Hole depth from-amplitude curve (i.e. TCG curves and DAC curves) is respectively 10mm, 20mmm, 30mm, 40mm, 50mm, 60mm.Point
Distance-amplitude curve Cai Yong not be made at least three holes in this six holes, it is desirable to each angle in sectoring angular range
Will scanning to these artificial reflectors.When detection is set, the hole of hole deep 10mm and 60mm depths is essential, and benchmark is sensitive
The wave height of degree is the 80% of height all over the screen, and reference sensitivity is calibrated using hole deep 10mm.(1) refraction angle be 55 ° when, 10mm
When deep hole reaches height 80% all over the screen, yield value 25dB, 60mm deep hole must also reach the 80% of height all over the screen, yield value
For 41dB.The hole deep 10mm hole deep with 60mm differs 50mm in depth, the Δ dB values difference 16dB between them, adds
Between compensating for coupling 4dB~6dB, Δ dB value difference 20dB~22dB.(2) when being 70 ° at refraction angle, hole deep 10mm reaches full
During screen height 80%, yield value 37dB, 60mm deep hole reaches the 80% of height all over the screen, yield value 57.5dB.They it
Between Δ dB values difference 20.5dB, along with compensating for coupling 4dB~6dB, Δ dB values are differed between 24.5dB~26.5dB.
As can be seen here, Δ dB values difference is very big, is illustrated deep to 60mm using the deep hole calibration reference sensitivities of 10mm
Hole be problematic, inaccurate, and irrational.Because hole deep 10mm is in secondary wave detection zone, that is, welding
Upper position is stitched, is 40mm, 50mm and 60mm respectively in hole depth corresponding to this region, and uses the deep hole calibration benchmark spirits of 10mm
Sensitivity is irrational at a glance, it should which it is rational, effective to calibrate reference sensitivity using hole deep 40mm.Using 10mm
Deep hole calibration reference sensitivity, again using the sectoring detection of a polarizers of big angle scope (i.e. 38 °~70 °), will also result in
The value of angle gain compensation is also bigger than normal, in turn results in that sensitivity compensation value is also big, and Δ dB value differences are bigger, noise signal is also increasing
Greatly, signal to noise ratio reduces, and ultimately causes reference sensitivity and angle gain compensation is forbidden, phenomenon bigger than normal occurs, cause sector to sweep
There is the probability increase of amplitude saturation state in the detection image data for retouching collection.
The basic reason for above-mentioned phenomenon occur is that reference sensitivity and angle gain compensation setting are problematic, and one is selection
First hole depth of calibration reference sensitivity is problematic, and another problem is that sectoring angular range is too big.
The content of the invention
In order to overcome current phased array supersonic using reference sensitivity calibration during sectoring detection and angle gain compensation
The deficiency of method to set up, easily cause detection data image wave amplitude and saturation state occur, the phenomenon that defect can not be evaluated.
The present invention proposes phased array sector scanning reference sensitivity and the method to set up of angle gain compensation.This method can be solved effectively
Reference sensitivity and the offering question of angle gain compensation, are commented for the analysis of testing result when sectoring is detected using encoder
Surely lay the first stone, provided safeguard measure for phased array supersonic technology application.
Scheme is used by the present invention solves technical problem：
Phased array sector scanning reference sensitivity and angle gain compensation method to set up, be by phased array supersonic equipment with
Phased array probe connects, and selects the sectoring software in equipment, by weld seam simulation softward by weld seam through-thickness decile
Into several subregions, it is determined that sectoring angular range and used a few subwaves that each subregion each uses detect, pass through
The artificial reflector corresponding with each subregion scope sets the side that reference sensitivity and angle gain compensate in reference block
Method.
The function that described phased array supersonic equipment has includes：
(1) phased array supersonic equipment must be multi-path-apparatus, and have multinomial scanning function or subregion scanning function；
(2) phased array supersonic equipment has sectoring detection technique；
(3) phased array supersonic equipment has weld seam simulation softward function；
(4) phased array supersonic equipment has and is separately provided on different passages, and different set is included same
On individual interface, and compensated with different reference sensitivities and angle gain；
(5) phased array supersonic equipment has the function that an exciting wafer number is more than or equal to 16 chips.
The chip number of described phased array supersonic probe have to be larger than equal to 16 chips, in the situation that satisfaction can penetrate
Under, the small probe of active aperture is selected as far as possible.
Described phased array ultrasonic detection reference sensitivity and the setting steps of angle gain compensation include：
The first step：Select phased array supersonic equipment；
Second step：Select phased array supersonic probe；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, weld seam through-thickness is divided into several subregions, it is determined that each subregion
The sectoring angular range each used and used a few subwave detections, it is specific as follows：
(1) thickness of workpiece is less than 5mm two subregions of weld seam decile, is detected using tertiary wave fan angle range in weld seam
Bottom subregion, weld seam middle and upper part subregion is detected using secondary wave fan angle range and four subwave fan angle ranges；
(2) thickness of workpiece is more than or equal to 5mm, two subregions of weld seam decile less than or equal to 7mm, using tertiary wave segment angle
Range detection weld seam middle and lower part subregion is spent, weld seam middle and upper part subregion is detected using secondary wave fan angle range；
(3) thickness of workpiece is more than 7mm, two subregions of weld seam decile less than or equal to 120mm, using primary wave fan angle
Range detection weld seam middle and lower part subregion, weld seam middle and upper part subregion is detected using secondary wave fan angle range；For narrow gap
During the subregion of weld seam detection middle and upper part, the inspection of ripple fan angle range again and again is at least further added by the basis of original sectoring
Survey；
(4) thickness of workpiece is more than 120mm weld seam, using two-sided (i.e. the front and back of workpiece) primary wave sectoring
Detection, weld seam through-thickness is divided into several subregions, but the oneself height of each subregion cannot be greater than 100mm, from weldering
Root subregion is stitched to capping subregion (i.e. top subregion, and last subregion), be arranged in order for the first subregion, second point
Area, the 3rd subregion ...；Each subregion is detected using primary wave fan angle range successively, for weld seam middle and upper part subregion
(i.e. most latter two subregion) undetectable position of primary wave sectoring, in another side (i.e. back of work) and using same
Setting carry out primary wave sectoring detection.
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specific as follows：
(1) setting of weld seam reference sensitivity of the thickness of workpiece less than 5mm and angle gain compensation
1) weld seam middle and lower part subregion is set：Determine manually to reflect corresponding to tertiary wave fan angle range in reference block
Body, three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the people of some depth
Work reflector calibrates reference sensitivity, can also use the artificial reflector of some of depth bounds between 8mm~12mm to make angle
Spend gain compensating curve；
2) weld seam middle and upper part subregion is set：
1. determining artificial reflector corresponding to secondary wave fan angle range in reference block, three are at least selected manually
Reflector makes distance-amplitude curve and angle gain compensated curve, and benchmark spirit is calibrated using the artificial reflector of some depth
Sensitivity, the artificial reflector of some of depth bounds between 5mm~8mm can be also used to make angle gain compensated curve；
2. determining artificial reflector corresponding to four subwave fan angle ranges in reference block, three are at least selected manually
Reflector makes distance-amplitude curve and angle gain compensated curve, and benchmark spirit is calibrated using the artificial reflector of some depth
Sensitivity, the artificial reflector of some of depth bounds between 9mm~13mm can be also used to make angle gain compensated curve.
(2) thickness of workpiece is more than or equal to setting for 5mm, the weld seam reference sensitivity less than or equal to 7mm and angle gain compensation
Put
1) weld seam middle and lower part subregion is set：Its method to set up and the 5th step (1) article the 1st) money is identical, but makes angle and increase
Beneficial compensated curve can also use the artificial reflector of some of depth bounds between 11mm~15mm；
2) weld seam middle and upper part subregion is set：Its method to set up and the 5th step (1) article the 2nd) method of money 1. is identical, but makes
The artificial reflector of some of depth bounds between 8mm~11mm can also be used by making angle gain compensated curve；
(3) thickness of workpiece is more than 7mm, the weld seam reference sensitivity less than or equal to 120mm and angle gain compensation setting
1) weld seam middle and lower part subregion is set：Determine manually to reflect corresponding to primary wave fan angle range in reference block
Body, three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the people of some depth
Work reflector calibrates reference sensitivity, and depth can also be respectively adopted according to detection parameters between (8~11) mm, (20~40) mm
Between and first calibration reference sensitivity artificial reflector make corresponding object angle gain compensated curve；
2) weld seam middle and upper part subregion is set：Determine manually to reflect corresponding to secondary wave fan angle range in reference block
Body, three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the people of some depth
Work reflector calibrates reference sensitivity, and depth two people of certain between (15~35) mm can also be respectively adopted according to detection parameters
Work reflector and the artificial reflector of first calibration reference sensitivity make the angle gain compensated curve of corresponding object；
3) set for the weld seam detection middle and upper part subregion of narrow gap：On the basis of original secondary wave sectoring at least again
Increase the detection of ripple fan angle range again and again, its preparation method is the determination primary wave fan angle model in reference block
Artificial reflector corresponding to enclosing detection narrow gap weld seam middle and upper part subregion, at least selects three artificial reflectors to make distance-ripple
Width curve and angle gain compensated curve, it can also use someone of the depth bounds between (8~11) mm or (20~50) mm
Work reflector makes angle gain compensated curve；
(4) setting of weld seam reference sensitivity of the thickness of workpiece more than 120mm and angle gain compensation
1) the first subregion is set：When determining the first subregion of detection in reference block corresponding to primary wave fan angle range
Artificial reflector, at least select three artificial reflectors to make distance-amplitude curves and angle gain compensated curve, but use the
One artificial reflector calibration reference sensitivity, can also use first man work reflector to make angle gain compensated curve；
2) method to set up such as the second subregion, the 3rd subregion and the 4th subregion is identical with the first subregion method to set up；
3) weld seam middle and upper part subregion (i.e. most latter two subregion) is set：Its method to set up is 1) and 2) identical with this, but
Workpiece another side (i.e. the back side) is detected.
The benchmark wave height of described phased array ultrasonic detection reference sensitivity is set as the 80%~100% of height all over the screen
(being free of 100%).
The positive effect of the present invention is：Simple to operate, practical, novel and unique is radiationless, pollution-free, testing result with
Image format shown, is visual and understandable, easy analyzing evaluation defect, and quantitative accuracy is high, is affected by human factors small, and leakage is commented and judged by accident
Probability it is low, detection efficiency is high.
Embodiment
Reference sensitivity and angle gain compensate the tight of method to set up when existing phased array supersonic is detected using sectoring
Weight shortcoming, easily cause detection data image wave amplitude and saturation state occur, the phenomenon that defect can not be evaluated.The present invention carries
Go out reference sensitivity and angle gain when a kind of phased array supersonic sectoring simple to operate, practical detects welding point to mend
The method to set up repaid.
Detection method
What reference sensitivity and angle gain compensated during a kind of detection welding point for phased array supersonic sectoring sets
Method is put, is to be connected phased array supersonic equipment with phased array probe, the sectoring software in equipment is selected, by weld seam mould
Intend software and weld seam through-thickness be divided into several subregions, it is determined that sectoring angular range that each subregion each uses and
Used a few subwave detections, set benchmark clever by artificial reflector corresponding with each subregion scope in reference block
Sensitivity and the method for angle gain compensation.
Embodiment 1：
Embodiment 1 is to detect the pipe girth joint that specification is Φ 32mm × 3.5mm, is examined using phased array supersonic sectoring
Reference sensitivity and the method to set up of angle gain compensation during survey, reference block are that (specification of test block is for PGD-1 test blocks：400mm
(length) × 25mm (width) × 50mm (height), the radius of curvature of test block is 18mm, the horizontal through hole for having 10 a diameter of 2mm in test block,
Horizontal via depth is respectively 3mm, 5mm, 7mm, 9mm, 12mm, 14mm, 16mm, 18mm, 20mm and 22mm)：
The first step：ISONIC-2009 phased array supersonic equipment is selected, it is 8 to excite grade, once excites 16 chips, 16
The active aperture of individual chip is 16 × 0.4 (mm)+(16-1) × 0.1mm=7.9mm (following computational methods are identical)；
Second step：The special phased array supersonic probe of small diameter tube is selected, i.e.,：Chip number is 16 chips, frequency 7.5MHz,
Adjacent two plates centreline space away from (P) is 0.5mm, wafer width (e) 0.4mm, gap (g) 0.1mm between adjacent chip, crystalline substance
Plate curvature radius is 35mm, wedge angle is 39 °, the voussoir velocity of sound is 2337m/s, and voussoir radius of curvature is 16mm；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 11mm, weld seam through-thickness is then divided into middle and upper part and the subregion of middle and lower part two from centre, it is determined that each point
How area is detected, and is specifically：Using tertiary wave detection weld seam middle and lower part, tertiary wave fan angle range is 63 °~70 °；Using
Secondary wave detection weld seam middle and upper part, secondary wave fan angle range are 68 °~77 °；Using four subwaves detection weld seam middle and upper part, four
Subwave fan angle range is 52 °~64 °；
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) weld seam middle and lower part subregion is set
Using the setting of tertiary wave detection weld seam middle and lower part subregion on passage 1：Determined three times in PGD-1 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 5mm, 9mm and 12mm horizontal through hole；Make distance-ripple
The references angle of width curve (i.e. DAC curves) is 66 °, uses depth to calibrate reference sensitivity, benchmark wave height for 9mm horizontal through hole
For the 90% of height all over the screen, reference sensitivity value is 42dB；63 °~70 ° of angle gain is made using horizontal through hole deep 9mm to mend
Repay curve；
(note 1：The depth value of the artificial reflector highly corresponding with subregion in reference block, it at least should be greater than being equal to and divide
Area's height, that is to say, that subregion scope must be covered, can also exceed covering subregion scope, it is same as below.Note 2：For making TCG
The phased array supersonic equipment of curve, angle gain compensated curve is made using 5mm, 9mm and 12mm horizontal through hole, angle gain is mended
Repay curve in TCG curve procedures are made just and meanwhile make, it is same as below.)
(2) weld seam middle and upper part subregion is set
1) using the setting of secondary wave detection weld seam middle and upper part subregion on passage 2：Two are determined in PGD-1 reference blocks
Artificial reflector corresponding to subwave fan angle range, i.e. depth are respectively 5mm, 7mm and 12mm horizontal through hole；Making distance-
The references angle of amplitude curve (i.e. DAC curves) is 72 °, uses depth to calibrate reference sensitivity, reference wave for 7mm horizontal through hole
The 90% of a height of height all over the screen, reference sensitivity value are 44.5dB；68 °~77 ° of angle is made using horizontal through hole deep 7mm to increase
Beneficial compensated curve；
2) using the setting of four subwaves detection weld seam middle and upper part subregion on passage 3：Four are determined in PGD-1 reference blocks
Artificial reflector corresponding to subwave fan angle range, i.e. depth are respectively 7mm, 9mm, 14mm and 16mm horizontal through hole；Make
The references angle of distance-amplitude curve (i.e. DAC curves) is 58 °, uses depth to calibrate reference sensitivity for 9mm horizontal through hole,
The 90% of a height of height all over the screen of reference wave, reference sensitivity value are 39.5dB；52 °~64 ° are made using horizontal through hole deep 12mm
Angle gain compensated curve.
Embodiment 2：
Embodiment 2 is to detect the pipe girth joint that specification is Φ 42mm × 7mm, is detected using phased array supersonic sectoring
When reference sensitivity and angle gain compensation method to set up, reference block is that (radius of curvature of test block is for PGD-2 test blocks
22mm, remaining parameter are identical with PGD-1 test blocks in embodiment 1)：
The first step：ISONIC-2009 phased array supersonic equipment is selected, it is 8 to excite grade, once excites 16 chips, 16
The active aperture of individual chip is 7.9mm；
Second step：The special phased array supersonic probe of small diameter tube is selected, i.e.,：Chip number is 16 chips, frequency 7.5MHz,
Adjacent two plates centreline space away from (P) is 0.5mm, wafer width (e) 0.4mm, gap (g) 0.1mm between adjacent chip, crystalline substance
Plate curvature radius is 35mm, wedge angle is 39 °, the voussoir velocity of sound is 2337m/s, and voussoir radius of curvature is 21mm；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 11mm, weld seam through-thickness is then divided into middle and upper part and the subregion of middle and lower part two from centre, it is determined that each point
How area is detected, and is specifically：Using tertiary wave detection weld seam middle and lower part, tertiary wave fan angle range is 49 °~56 °；Using
Secondary wave detection weld seam middle and upper part, secondary wave fan angle range are 54 °~71 °；
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) weld seam middle and lower part subregion is set
Using the setting of tertiary wave detection weld seam middle and lower part subregion on passage 1：Determined three times in PGD-2 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 9mm, 12mm, 18mm and 22mm horizontal through hole；Make away from
References angle from-amplitude curve (i.e. DAC curves) is 52 °, uses the horizontal through hole calibration reference sensitivity that depth is 9mm, base
The 95% of a height of height all over the screen of quasi wave, reference sensitivity value are 41dB；49 °~56 ° of angle is made using horizontal through hole deep 12mm
Spend gain compensating curve；
(2) weld seam middle and upper part subregion is set
Using the setting of secondary wave detection weld seam middle and upper part subregion on passage 2：Determined in PGD-2 reference blocks secondary
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 9mm, 12mm and 16mm horizontal through hole；Make distance-ripple
The references angle of width curve (i.e. DAC curves) is 62 °, uses depth to calibrate reference sensitivity for 9mm horizontal through hole, quasi wave is a height of
The 90% of height all over the screen, reference sensitivity value are 40dB；68 °~77 ° of angle gain is made using horizontal through hole deep 9mm to compensate
Curve.
Embodiment 3：
Embodiment 3 is to detect the pipe girth joint that specification is Φ 51mm × 12.5mm, using phased array supersonic sectoring
Reference sensitivity and the method to set up of angle gain compensation during detection, reference block are that (radius of curvature of test block is for PGD-3 test blocks
26mm, remaining parameter are identical with PGD-1 test blocks in embodiment 1)：
The first step：ISONIC-2009 phased array supersonic equipment is selected, it is 8 to excite grade, once excites 16 chips, 16
The active aperture of individual chip is 7.9mm；
Second step：The special phased array supersonic probe of small diameter tube is selected, i.e.,：Chip number is 16 chips, frequency 7.5MHz,
Adjacent two plates centreline space away from (P) is 0.5mm, wafer width (e) 0.4mm, gap (g) 0.1mm between adjacent chip, crystalline substance
Plate curvature radius is 35mm, wedge angle is 39 °, the voussoir velocity of sound is 2337m/s, and voussoir radius of curvature is 25.5mm；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 10mm, weld seam through-thickness is then divided into middle and upper part and the subregion of middle and lower part two from centre, it is determined that each point
How area is detected, and is specifically：Using primary wave detection weld seam middle and lower part, primary wave fan angle range is 58 °~75 °；Using
Secondary wave detection weld seam middle and upper part, secondary wave fan angle range are 38 °~60 °；
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) weld seam middle and lower part subregion is set
Using the setting of primary wave detection weld seam middle and lower part subregion on passage 1：Determined once in PGD-3 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 6mm, 9mm, 14mm and 16mm horizontal through hole；Make away from
References angle from-amplitude curve (i.e. DAC curves) is 68 °, uses the horizontal through hole calibration reference sensitivity that depth is 9mm, base
The 90% of a height of height all over the screen of quasi wave, reference sensitivity value are 42dB；58 °~75 ° of angle is made using horizontal through hole deep 9mm
Gain compensating curve；
(2) weld seam middle and upper part subregion is set
Using the setting of secondary wave detection weld seam middle and upper part subregion on passage 2：Determined in PGD-3 reference blocks secondary
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 16mm, 18mm, 22mm, 28mm and 30mm horizontal through hole；
The references angle for making distance-amplitude curve (i.e. DAC curves) is 48 °, uses depth to calibrate benchmark spirit for 16mm horizontal through hole
Sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 39.5dB；38 ° are made using horizontal through hole deep 18mm
~60 ° of angle gain compensated curve.
Embodiment 4：
Embodiment 4 is to detect the test plate (panel) weld seam that specification is 350mm × 280mm × 22mm, is swept using phased array supersonic sector
Reference sensitivity and the method to set up of angle gain compensation when retouching detection, reference block are that (specification of test block is for PRB-2 test blocks：
450mm (length) × 25mm (width) × 110mm (height), there is 5 a diameter of 2mm horizontal through hole in test block, between adjacent horizontal through hole is vertical
Away from being respectively 10mm, 30mm, 50mm, 70mm and 90mm for 40mm, hole depth)：
The first step：ZETEC phased array supersonic equipment is selected, pulse voltage 75V, once excites 16 chips (i.e. 9~24),
The active aperture of 16 chips is 7.9mm；
Second step：104379W36 models phased array supersonic probe is selected, parameter is：Chip number is 32 chips, and frequency is
5MHz, adjacent two plates centreline space away from (P) are 0.5mm, wafer width (e) 0.4mm, the gap (g) between adjacent chip
0.1mm, wedge angle are 36 °, the voussoir velocity of sound is 2337m/s, using plane voussoir；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 16mm, weld seam through-thickness is then divided into middle and upper part and the subregion of middle and lower part two from centre, it is determined that each point
How area is detected, and is specifically：Using primary wave detection weld seam middle and lower part, primary wave fan angle range is 55 °~75 °；Using
Secondary wave detection weld seam middle and upper part, secondary wave fan angle range are 40 °~55 °；
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) weld seam middle and lower part subregion is set
Using the setting of primary wave detection weld seam middle and lower part subregion on passage 1：Determined once in PRB-2 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 10mm, 20mm and 30mm horizontal through hole；Making distance-
The references angle of amplitude curve (i.e. TCG curves) is 65 °, uses depth to calibrate reference sensitivity, benchmark for 10mm horizontal through hole
Wave height is the 80% of height all over the screen, and reference sensitivity value is 27.5dB；The deep horizontal through hole system of 10mm, 20mm and 30mm is respectively adopted
Make TCG curves and the angle gain compensated curve (note of 55 °~75 ° of making：Angle is made in TCG curve procedures are done while also
Spend gain compensating curve)；
(2) weld seam middle and upper part subregion is set
Using the setting of secondary wave detection weld seam middle and upper part subregion on passage 2：Determined in PRB-2 reference blocks secondary
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 30mm, 40mm and 50mm horizontal through hole；Making distance-
The references angle of amplitude curve (i.e. TCG curves) is 45 °, uses depth to calibrate reference sensitivity, benchmark for 30mm horizontal through hole
Wave height is the 80% of height all over the screen, and reference sensitivity value is 35dB；The deep horizontal through hole of 30mm, 40mm and 50mm is respectively adopted to make
TCG curves and the angle gain compensated curve of 40 °~55 ° of making (note：Angle is made in TCG curve procedures are done while also
Gain compensating curve).
Embodiment 5：
Embodiment 5 is to detect the test plate (panel) weld seam that specification is 600mm × 500mm × 120mm, is swept using phased array supersonic sector
Reference sensitivity and the method to set up of angle gain compensation when retouching detection, reference block are that (specification of test block is for PRB-3 test blocks：
700mm (length) × 30mm (width) × 170mm (height), there is 8 a diameter of 2mm horizontal through hole in test block, between adjacent horizontal through hole is vertical
Away from being respectively 10mm, 30mm, 50mm, 70mm, 90mm, 110mm, 130mm and 150mm for 40mm, hole depth)：
The first step：ISONIC-2009 phased array supersonic equipment is selected, it is 8 to excite grade；
Second step：Select phased array supersonic probe, using the phased array probe of two kinds of models, i.e., 105503W36 models and
104379W36 models：
(1) 105503W36 models probe parameter：Chip number is 16 chips, frequency 2MHz, adjacent two plates center line
Spacing (P) is 1mm, gap (g) 0.1mm between wafer width (e) 0.9mm, adjacent chip, wedge angle are 36 °, voussoir sound
Speed is 2337m/s.
(2) 104379W36 models probe parameter：Chip number is 32 chips, frequency 5MHz, adjacent two plates center line
Spacing (P) is 0.5mm, gap (g) 0.1mm between wafer width (e) 0.4mm, adjacent chip, wedge angle are 36 °, voussoir
The velocity of sound is 2337m/s, using plane voussoir.
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 150mm, weld seam through-thickness is then divided into middle and upper part and the subregion of middle and lower part two from centre, it is determined that each point
How area is detected, and is specifically：
(1) it is 57 °~72 ° using primary wave detection weld seam middle and lower part, primary wave fan angle range；Examined using secondary wave
Weld seam middle and upper part is surveyed, secondary wave fan angle range is 40 °~56 °；It is configured using 105503W36 models probe, once
16 chips are excited, the active aperture of 16 chips is 15.9mm.
(2) because the weld seam belongs to narrow gap weld seam, the detection of primary wave sectoring twice should be increased, set carry out respectively
Scanning, i.e.,：Distance of the probe distal end away from weld edge is 5mm, and primary wave fan angle range is 55 °~75 °；Probe distal end away from
The distance of weld edge is 30mm, and primary wave fan angle range is 46 °~66 °；Set using 104379W36 models probe
Put, once excite 16 chips, the active aperture of 16 chips is 7.9mm.
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) weld seam middle and lower part subregion is set
Using the setting of primary wave detection weld seam middle and lower part subregion on passage 1：Determined once in PRB-3 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 70mm, 90mm and 120mm horizontal through hole；Once excite
16 chips, the references angle for making distance-amplitude curve (i.e. DAC curves) is 65 °, uses horizontal through hole school of the depth for 70mm
Quasi- reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 49.5dB；Using the horizontal through hole that 70mm is deep
Make 58 °~72 ° of angle gain compensated curve.
(2) weld seam middle and upper part subregion is set
1) using the setting of secondary wave detection weld seam middle and upper part subregion on passage 2：Two are determined in PRB-3 reference blocks
Artificial reflector corresponding to subwave fan angle range, i.e. depth are respectively 160mm, 200mm and 240mm horizontal through hole；Once
16 chips are excited, the references angle for making distance-amplitude curve (i.e. DAC curves) is 48 °, uses horizontal stroke of the depth for 160mm
Through hole calibration reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 46dB；Deep using 160mm
Horizontal through hole makes 38 °~55 ° of angle gain compensated curve.
2) narrow gap weld seam increase primary wave detection twice is set
1. it is separately provided using primary wave detection weld seam middle and upper part subregion：Determined once in PRB-3 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 10mm, 20mm and 30mm horizontal through hole；Once excite 16
Individual chip (i.e. 9~24), the references angle for making distance-amplitude curve (i.e. DAC curves) is 65 °, uses depth as 10mm's
Horizontal through hole calibration reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 40dB；Deep using 30mm
Horizontal through hole makes 55 °~75 ° of angle gain compensated curve.
2. it is separately provided using primary wave detection weld seam middle and upper part subregion：Determined once in PRB-3 reference blocks
Artificial reflector corresponding to ripple fan angle range, i.e. depth are respectively 30mm, 40mm and 60mm horizontal through hole；Once excite 16
Individual chip (i.e. 9~24), the references angle for making distance-amplitude curve (i.e. DAC curves) is 56 °, uses depth as 30mm's
Horizontal through hole calibration reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 37.5dB；It is deep using 30mm
Horizontal through hole make 46 °~66 ° of angle gain compensated curve.
Embodiment 6：
Embodiment 6 is to detect the test plate (panel) weld seam that specification is 600mm × 500mm × 300mm, is swept using phased array supersonic sector
Reference sensitivity and the method to set up of angle gain compensation when retouching detection, reference block are that (specification of test block is for PRB-7 test blocks：
700mm (length) × 30mm (width) × 210mm (height), there is 10 a diameter of 11.1mm horizontal through hole in test block, and adjacent horizontal through hole hangs down
Straight spacing is 40mm, hole depth be respectively 10mm, 30mm, 50mm, 70mm, 90mm, 110mm, 130mm, 150mm, 170mm and
190mm)：
The first step：ISONIC-2009 phased array supersonic equipment is selected, it is 8 to excite grade, once excites 16 chips, 16
The active aperture of individual chip is 15.9mm；
Second step：105503W36 models phased array supersonic probe is selected, parameter is：Chip number is 16 chips, and frequency is
2MHz, adjacent two plates centreline space away from (P) are 1mm, wafer width (e) 0.9mm, the gap (g) between adjacent chip
0.1mm, wedge angle are 36 °, the voussoir velocity of sound is 2337m/s, using plane voussoir；
3rd step：After phased array supersonic equipment is connected with phased array probe, fan-shaped scanning software in equipment is selected；
4th step：Using weld seam simulation softward, groove definition is carried out to detected weld, determines probe distal end away from weld edge
Distance be 200mm, using two-sided primary wave sectoring detect, then by weld seam through-thickness trisection, i.e., first point
Area is root of weld subregion, the second subregion is middle part subregion, the 3rd subregion is top subregion, it is determined that how each subregion detects,
Specifically：The subregion of weld seam first is detected using primary wave, primary wave fan angle range is 35 °~55 °；Detected using primary wave
The subregion of weld seam second, primary wave fan angle range are 53 °~68 °；Test plate (panel) is similarly turned into (i.e. in back of work), adopted
With same setting detection weld seam top subregion and middle part subregion；
5th step：Reference sensitivity is set using artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation, it is specifically：
(1) first subregion (i.e. root of weld subregion) is set
Using the setting of primary wave detection root of weld subregion on passage 1：Primary wave is determined in PRB-7 reference blocks
Artificial reflector corresponding to fan angle range, i.e. depth are respectively 190mm, 270mm and 310mm horizontal through hole；Once excite
16 chips, the references angle for making distance-amplitude curve (i.e. DAC curves) is 45 °, uses horizontal through hole of the depth for 190mm
Calibration reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 44dB；Using the horizontal logical of 190mm depths
Hole makes 35 °~55 ° of angle gain compensated curve；
(2) second subregions (i.e. subregion in the middle part of weld seam) are set
Using the setting of subregion in the middle part of primary wave detection weld seam on passage 2：Primary wave is determined in PRB-7 reference blocks
Artificial reflector corresponding to fan angle range, i.e. depth are respectively 100mm, 140mm and 200mm horizontal through hole；Once excite
16 chips, the references angle for making distance-amplitude curve (i.e. DAC curves) is 60 °, uses horizontal through hole of the depth for 100mm
Calibration reference sensitivity, the 80% of a height of height all over the screen of reference wave, reference sensitivity value is 42.5dB；Using the horizontal stroke that 100mm is deep
Through hole makes 53 °~68 ° of angle gain compensated curve.
(3) the 3rd subregions (weld seam top subregion) are set
Test plate (panel) is similarly turned into (i.e. in back of work), weld seam top subregion and middle part are detected using same setting
Subregion.
The characteristics of detection method：
(1) the inventive method proposes to set phased array sector scanning reference sensitivity and angle gain using zone method first
The method of compensation, for solve the problems, such as analyze data storage when picture amplitude saturation lay the first stone, reduce to Analysis of test results
The False Rate of judge.
(2) specified in more detail goes out according to how different wall divides subregion, and the inventive method in each subregion such as first
What sets reference sensitivity and the angle gain compensation of sectoring detection.
(3) the inventive method is applied to that there is the multichannel phased array supersonic of multinomial scanning function or subregion scanning function to set
It is standby；Include with being separately provided on different passages, and by different set on same interface, and there is different bases
Quasi- sensitivity and angle gain compensation；
(4) the inventive method is applied to using encoder record scanning position, real-time display scanning data, testing result with
Image format is shown, visual and understandable, and quantitative accuracy is high, and the data of storage have dynamic playback function；
(5) the inventive method novel and unique, it is simple to operate it is practical, be easily mastered, be applied widely,
Detection efficiency is high.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (9)
1. phased array sector scanning reference sensitivity and the method to set up of angle gain compensation, it is characterised in that including following step
Suddenly：Phased array supersonic equipment is connected with phased array probe, the sectoring software in equipment is selected, by weld seam simulation softward
Weld seam through-thickness is divided into several subregions, it is determined that sectoring angular range that each subregion each uses and being adopted
A few subwave detections, reference sensitivity is set by artificial reflector corresponding with each subregion scope in reference block
And angle gain compensation.
2. phased array sector scanning reference sensitivity according to claim 1 and the method to set up of angle gain compensation, its
It is characterised by, the phased array supersonic equipment is multi-path-apparatus, and has multinomial scanning function or subregion scanning function；It is phased
Battle array ultrasonic device is separately provided on different passages, and different set is included on same interface, and with difference
Reference sensitivity and angle gain compensation；Exciting wafer number of phased array supersonic equipment is more than or equal to 16.
3. phased array sector scanning reference sensitivity according to claim 1 and the method to set up of angle gain compensation, its
It is characterised by, the chip number of the phased array supersonic probe is more than or equal to 16.
4. phased array sector scanning reference sensitivity according to claim 1 and the method to set up of angle gain compensation, its
It is characterised by, the sectoring angular range and used a few subwave detection bags that each subregion of described determination each uses
Include：
（1）Thickness of workpiece is less than 5mm two subregions of weld seam decile, and weld seam middle and lower part is detected using tertiary wave fan angle range
Subregion, weld seam middle and upper part subregion is detected using secondary wave fan angle range and four subwave fan angle ranges；
（2）Thickness of workpiece is more than or equal to 5mm, two subregions of weld seam decile less than or equal to 7mm, using tertiary wave fan angle model
Detection weld seam middle and lower part subregion is enclosed, weld seam middle and upper part subregion is detected using secondary wave fan angle range；
（3）Thickness of workpiece is more than 7mm, two subregions of weld seam decile less than or equal to 120mm, using primary wave fan angle range
Weld seam middle and lower part subregion is detected, weld seam middle and upper part subregion is detected using secondary wave fan angle range；For the weld seam of narrow gap
When detecting middle and upper part subregion, the detection of ripple fan angle range again and again is at least further added by the basis of original sectoring；
（4）Thickness of workpiece is more than 120mm weld seam, is detected using two-sided primary wave sectoring, by weld seam through-thickness etc.
It is divided into several subregions, but the oneself height of each subregion cannot be greater than 100mm, from root of weld subregion to capping subregion, according to
It is secondary to be arranged as the first subregion, the second subregion, the 3rd subregion ...；Each subregion is carried out using primary wave fan angle range successively
Detection, is also to adopt in another side back of work for weld seam most latter two undetectable position of subregion primary wave sectoring
Primary wave sectoring detection is carried out with same setting.
5. phased array sector scanning reference sensitivity according to claim 4 and the method to set up of angle gain compensation, its
It is characterised by, weld seam of the thickness of workpiece less than 5mm passes through artificial reflector corresponding with each subregion scope in reference block
To include the step of setting reference sensitivity and angle gain to compensate：
（1）Weld seam middle and lower part subregion is set：Artificial reflector corresponding to tertiary wave fan angle range is determined in reference block,
Three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the artificial of some depth
Reflector calibrates reference sensitivity, can also use the artificial reflector of some of depth bounds between 8mm~12mm to make angle
Gain compensating curve；
（2）Weld seam middle and upper part subregion is set：
1. determining artificial reflector corresponding to secondary wave fan angle range in reference block, three artificial reflections are at least selected
System makees distance-amplitude curve and angle gain compensated curve, and reference sensitivity is calibrated using the artificial reflector of some depth,
Also the artificial reflector of some of depth bounds between 5mm~8mm can be used to make angle gain compensated curve；
2. determining artificial reflector corresponding to four subwave fan angle ranges in reference block, three artificial reflections are at least selected
System makees distance-amplitude curve and angle gain compensated curve, and reference sensitivity is calibrated using the artificial reflector of some depth,
Also the artificial reflector of some of depth bounds between 9mm~13mm can be used to make angle gain compensated curve.
6. phased array sector scanning reference sensitivity according to claim 4 and the method to set up of angle gain compensation, its
Be characterised by, thickness of workpiece be more than or equal to 5mm, the weld seam less than or equal to 7mm by reference block with each subregion scope phase
Corresponding artificial reflector includes the step of setting reference sensitivity and angle gain to compensate：
（1）Weld seam middle and lower part subregion is set：Artificial reflector corresponding to tertiary wave fan angle range is determined in reference block,
Three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the artificial of some depth
Reflector calibrates reference sensitivity, can also use the artificial reflector of some of depth bounds between 11mm~15mm to make angle
Gain compensating curve；
（2）Weld seam middle and upper part subregion is set：Artificial reflector corresponding to secondary wave fan angle range is determined in reference block,
Three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the artificial of some depth
Reflector calibrates reference sensitivity, can also use the artificial reflector of some of depth bounds between 8mm~11mm to make angle
Gain compensating curve.
7. phased array sector scanning reference sensitivity according to claim 4 and the method to set up of angle gain compensation, its
It is characterised by, thickness of workpiece passes through relative with each subregion scope in reference block more than 7mm, the weld seam less than or equal to 120mm
The artificial reflector answered includes the step of setting reference sensitivity and angle gain to compensate：
（1）Weld seam middle and lower part subregion is set：Artificial reflector corresponding to primary wave fan angle range is determined in reference block,
Three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the artificial of some depth
Reflector calibrates reference sensitivity, and also depth can be respectively adopted according to detection parameters is（8~11）Between mm,（20~40）Mm it
Between and first calibration reference sensitivity artificial reflector make corresponding object angle gain compensated curve；
（2）Weld seam middle and upper part subregion is set：Artificial reflector corresponding to secondary wave fan angle range is determined in reference block,
Three artificial reflectors are at least selected to make distance-amplitude curve and angle gain compensated curve, using the artificial of some depth
Reflector calibrates reference sensitivity, and also depth can be respectively adopted according to detection parameters is（15~35）Certain two between mm are artificial
Reflector and the artificial reflector of first calibration reference sensitivity make the angle gain compensated curve of corresponding object；
（3）Set for the weld seam detection middle and upper part subregion of narrow gap：At least increase again on the basis of original secondary wave sectoring
Add the detection of ripple fan angle range again and again, its preparation method is the determination primary wave fan angle range in reference block
Artificial reflector corresponding to the subregion of narrow gap weld seam middle and upper part is detected, at least selects three artificial reflectors to make distance-wave amplitude
Curve and angle gain compensated curve, can also use depth bounds for（8~11）Mm or（20~40）Some between mm is artificial
Reflector makes angle gain compensated curve.
8. phased array sector scanning reference sensitivity according to claim 4 and the method to set up of angle gain compensation, its
It is characterised by, weld seam of the thickness of workpiece more than 120mm passes through artificial reflection corresponding with each subregion scope in reference block
Body includes the step of setting reference sensitivity and angle gain to compensate：
（1）The setting of each subregion：When determining to detect each subregion in reference block corresponding to primary wave fan angle range
Artificial reflector, at least select three artificial reflectors to make distance-amplitude curves and angle gain compensated curve, but use the
One artificial reflector calibration reference sensitivity, can also use first man work reflector to make angle gain compensated curve；
（2）Except weld seam most latter two subregion is detected in back of work, remaining subregion detects in workpiece front.
9. the setting of the phased array sector scanning reference sensitivity and angle gain compensation according to any one of claim 1 ~ 8
Method, it is characterised in that the benchmark wave height h of the reference sensitivity is set as 80% height all over the screen≤100% height all over the screen of h ＜.
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| CN108982663A (en) * | 2018-06-25 | 2018-12-11 | 海洋石油工程股份有限公司 | The detection method of double metallic composite material submarine pipeline girth joint phased array zone method |
| CN110208384A (en) * | 2019-07-01 | 2019-09-06 | 河海大学常州校区 | A kind of workpiece surface is open the measurement method at oblique flaw height and inclination angle |
| WO2020048373A1 (en) * | 2018-09-05 | 2020-03-12 | 中国电建集团山东电力建设第一工程有限公司 | Intermediate and large diameter thin-walled tube non-destructive detection method based on phased array ultrasonic flaw detector |
| CN110988139A (en) * | 2019-11-01 | 2020-04-10 | 中国船舶重工集团公司第七二五研究所 | Phased array ultrasonic detection method for welding buoy base plate and sampan |
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| CN114487102A (en) * | 2021-12-31 | 2022-05-13 | 北京航天特种设备检测研究发展有限公司 | Weld phased array ultrasonic detection method with extra height |
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| CN114487102A (en) * | 2021-12-31 | 2022-05-13 | 北京航天特种设备检测研究发展有限公司 | Weld phased array ultrasonic detection method with extra height |
| CN114487102B (en) * | 2021-12-31 | 2024-05-28 | 北京航天特种设备检测研究发展有限公司 | Ultrasonic detection method for weld joint phased array with residual height |
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