CN112763574B - Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet - Google Patents
Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet Download PDFInfo
- Publication number
- CN112763574B CN112763574B CN202011176696.5A CN202011176696A CN112763574B CN 112763574 B CN112763574 B CN 112763574B CN 202011176696 A CN202011176696 A CN 202011176696A CN 112763574 B CN112763574 B CN 112763574B
- Authority
- CN
- China
- Prior art keywords
- detection
- phased array
- probe
- aluminum alloy
- welding seam
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 194
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 66
- 238000003466 welding Methods 0.000 claims abstract description 85
- 239000000523 sample Substances 0.000 claims abstract description 84
- 230000035945 sensitivity Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 15
- 230000007547 defect Effects 0.000 claims description 26
- 235000012431 wafers Nutrition 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 13
- 238000005498 polishing Methods 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 8
- 238000000227 grinding Methods 0.000 claims description 7
- 230000003746 surface roughness Effects 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 238000007781 pre-processing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000010191 image analysis Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000011002 quantification Methods 0.000 description 3
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000011895 specific detection Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 241001417935 Platycephalidae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 102220067365 rs143592561 Human genes 0.000 description 1
- 102220065682 rs77311724 Human genes 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- 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
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
-
- 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
- G01N29/04—Analysing solids
- G01N29/048—Marking the faulty objects
-
- 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
- G01N29/24—Probes
- G01N29/2437—Piezoelectric probes
-
- 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
- G01N29/24—Probes
- G01N29/2456—Focusing probes
-
- 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
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
-
- 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
-
- 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
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
- G01N2291/0427—Flexural waves, plate waves, e.g. Lamb waves, tuning fork, cantilever
-
- 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
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2632—Surfaces flat
-
- 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
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2675—Seam, butt welding
Abstract
A welding seam phased array ultrasonic detection method for an aluminum alloy sheet comprises the following steps: a. pretreating the detection surface; b. aiming at the welding line detection requirement of the aluminum alloy sheet, a tile-shaped focusing probe is designed to enable electrons in phased array ultrasonic detection to generate a focusing effect; c. preparing portable equipment for phased array ultrasonic detection, a detection wedge block and a calibration test block; d. calibrating the accuracy, the sound velocity and the sensitivity of the detection wedge block, and calibrating the encoder; e. and detecting on site, and then analyzing and judging according to phased array detection data and images to finish detection. When the device is used, phased array ultrasonic beams can be physically focused transversely, sound beams can be focused better in the welding seam, the sound energy of a focusing area is improved, the influence of factors such as sound energy attenuation and sound scattering on the signal to noise ratio can be reduced, the detection effect of air holes in the welding seam of the aluminum alloy sheet is improved, the blind area of welding seam detection is reduced, the primary wave coverage area is increased, and the detection reliability is improved.
Description
Technical Field
The invention relates to the technical field of material detection, in particular to a phased array ultrasonic detection method for welding seams of aluminum alloy sheets.
Background
Aluminum alloy materials are widely used in superstructures and parts of ship hulls, where the thickness is relatively thin, typically less than 10mm. Welding is widely used as a main joining process for butt joint and corner joint of aluminum alloys, and a large number of welds are formed during the construction of ships.
One ultrasonic detection method which is commonly used in the aviation industry at present is water-filled phased array ultrasonic detection, and the method is used for detecting a friction stir welding seam by high-grinding the seam allowance, flushing with a base metal and reducing the influence of the front edge of a probe. The water filling phased array ultrasonic detection can be realized in areas such as workshops, the difficulty in the field detection of the ship body is high, firstly, the water source area supply and the pressure stability are high, secondly, the weld joint grinding cannot be realized during the ship construction, and moreover, the structural strength is reduced due to the fact that the aluminum alloy is ground in a large area due to the hardness angle of the aluminum alloy, so that the use is affected. Phased array ultrasonic inspection in the marine industry generally does not use water-filled phased array ultrasonic inspection.
At present, the aluminum alloy material outer plate is used in a large amount, so that the overall weight of the ship is reduced, and the ship can quickly form good combat capability in combat. Compared with the conventional aluminum alloy material, the aluminum alloy has the advantages of high strength, good corrosion resistance and the like, is the most widely used material for light materials of ships and warships, and is widely applied to superstructure and ship bodies of ships and warships.
Generally, the quality detection is generally carried out by adopting the radiation detection and penetration detection technology, but the radiation detection technology cannot effectively detect the area type defect, the ionizing radiation generated by the radiation detection is harmful to human bodies and the environment, the detection work is influenced by time and space, and the detection efficiency is low; phased array ultrasonic detection technology has the advantages of multi-view display which is incomparable with conventional ultrasonic, and the data file can be stored for a long time. Therefore, an effective detection method is required to be found in the flat butt welding line of the marine aluminum alloy sheet so as to solve the detection difficulty of the ray detection.
The ultrasonic detection technology can solve the problem of radiation detection in field detection as the internal quality detection technology of the welding seam with small environmental influence, but when the aluminum alloy sheet welding seam is detected by conventional ultrasonic, the detection omission is easy to cause due to the influence of the length and scattering of a near field, the detection effect of the conventional ultrasonic detection single angle on the area defect existing in the aluminum alloy welding seam is easy to miss due to the influence of the angle, and the conventional ultrasonic reflection signal clutter is more caused by the uncertainty of the sound pressure reflection amplitude value in the near field and the sheet structure, so that the possibility of misjudgment is greatly increased.
At present, no report and perfect solution method is disclosed at home and abroad, the technical difficulty of ultrasonic detection of the welding seam of the aluminum alloy sheet can be completely solved, and a reliable detection method is formed, so that a feasible phased array ultrasonic detection method of the welding seam of the aluminum alloy sheet is urgently needed.
Disclosure of Invention
The invention aims to provide an improved phased array ultrasonic detection method for welding seams of aluminum alloy sheets, which can improve detection accuracy and detection reliability.
In order to achieve the above object, the technical scheme of the present invention is as follows: a welding seam phased array ultrasonic detection method for an aluminum alloy sheet is characterized by comprising the following steps of: the detection method comprises the following steps: a. pretreating the detection surface; b. aiming at the welding line detection requirement of the aluminum alloy sheet, a tile-shaped focusing probe is designed to enable electrons in phased array ultrasonic detection to generate a focusing effect; c. preparing portable equipment for phased array ultrasonic detection, a detection wedge block and a calibration test block; d. calibrating wedge accuracy, sound velocity and sensitivity, and calibrating an encoder; e. and detecting on site, and then analyzing and judging according to phased array detection data and images.
In the step a, polishing the surface of the scanning table to remove foreign matters which prevent the probe from moving, and ensuring that the surface roughness Ra of a probe moving area is less than or equal to 12.5 mu m; the polishing range extends from the side edge of the welding seam to the two sides of the welding seam by more than 6 times, and the thickness is additionally added with 50mm; and determining a welding line detection range, and drawing detection marks and reference lines.
And b, arranging a plurality of piezoelectric wafers to form a focusing probe, wherein each piezoelectric wafer is in an arc shape, the piezoelectric wafers are arranged to form a tile-shaped structure, the depth N of the focusing focus at the electronic focusing center angle position of the phased array probe is 1.5-2 times the thickness of the aluminum alloy sheet, and the deviation between the focusing focus and the central line position of the probe is less than or equal to 2 degrees.
c, firstly, preparing a phased array ultrasonic detection wedge block, wherein the detection wedge block is made of organic glass or polystyrene, the refraction angle of ultrasonic sound waves of the probe ranges from 45 degrees to 75 degrees in an aluminum alloy material, and the refraction center angle of the probe ranges from 55 degrees to 60 degrees; in order to ensure that the detection surface is straight, if the detection surface is slightly bent, proper grinding is needed to ensure that the clearance between any point of the contact part of the wedge block and the detection surface is less than or equal to 0.5mm; secondly, designing a calibration test block, wherein one end of the calibration test block is a flat head, the other end of the calibration test block is an arc head, a transverse through hole with the diameter of 1mm is adopted, a first arc surface and a second arc surface are arranged, and the ratio of the diameters of the first arc surface to the second arc surface is 1:2.
The step d comprises the following steps: d1, placing the probe at the plane position of the test block by wedge delay, and calibrating by wedge; d2, carrying out sound velocity calibration by adopting first and second arc surface reflection; d3, setting the focusing depth to be 1.5-2.0 times of the thickness of the aluminum alloy sheet, moving a probe to scan a transverse through hole with the diameter of 1mm, and adding a distance amplitude curve to finish sensitivity calibration; d4, placing the phased array probe near the focus position of the main sound beam, moving the probe back and forth, and adjusting gains of different angles to 70-85% level to finish ACG calibration; and D5, after the encoder is connected with the portable phased array equipment, the actual length is moved to be more than or equal to 1000mm, the calibration length is calibrated, the calibration error is less than or equal to 1%, and the distance calibration of the encoder is completed.
Compared with the prior art, the technical scheme of the invention comprises a plurality of improvements in detail besides the improvement of the whole technical scheme, and particularly has the following beneficial effects:
1. according to the phased array ultrasonic detection method for the butt welding seam of the aluminum alloy sheet, provided by the invention, the tile-shaped transverse wave phased array probe and the transverse tile-shaped focusing wafer design mode are adopted, so that phased array ultrasonic beams can be subjected to physical focusing in the transverse direction, sound beams can be better focused in the welding seam, the sound energy of a focusing area is improved, the influence of factors such as sound energy attenuation and sound scattering on the signal to noise ratio can be effectively reduced, the detection effect of air holes in the welding seam of the aluminum alloy sheet is improved, the blind area for detecting the welding seam is greatly reduced, the area covered by primary waves is increased, and the detection reliability is improved;
2. through a phased array ultrasonic sector scanning mode (S scanning), an ultrasonic sound beam can scan the whole welding seam area and a heat affected zone in a set angle range, so that defects in different orientations can be effectively detected, and the refraction angle is adjusted, thereby realizing multi-angle ultrasonic detection, having good defect detection effect in different directions, and improving the detection capability of area defects in butt welding seams of aluminum alloy sheets.
3. And (3) performing simulation by adopting full-coverage simulation software, constructing a model of the butt welding seam of the detected aluminum alloy sheet, simulating the sound beam path of ultrasonic waves in the welding seam, ensuring the ultrasonic sound beam coverage of the welding seam and a heat affected zone, and making a scanning plan, wherein the scanning plan comprises a stepping offset, a sound beam angle range and the like, so as to avoid missed detection.
4. The design adopts the calibration test block to calibrate the detection system, so that the detection sensitivity, the positioning accuracy and the like are more accurate, and the positioning and quantitative information of the defects obtained through analysis software is more accurate.
5. The phased array ultrasonic analysis software for the primary wave and secondary wave overturning display is adopted to intuitively reflect the defect condition of the butt weld of the aluminum alloy sheet, and compared with the traditional phased array single S-scan display, the structure condition can be effectively judged, and false detection and omission caused by false signals and structural signals are avoided.
Drawings
FIG. 1 is a schematic diagram of the detection flow of the present invention.
FIG. 2 is a schematic diagram of a detection position according to the present invention.
Fig. 3-4 are schematic views of the working states of the focusing probe and the detecting wedge block of the present invention.
FIG. 5 is a schematic diagram of the structure of the calibration block of the present invention.
FIGS. 6-7 are analysis of detection images of the present invention including air holes.
Fig. 8-9 illustrate the analysis of detection images of the present invention including unfused.
FIG. 10 is an analysis of a test image of the present invention including dense air holes.
FIG. 11 is a schematic view of reflected waves in an aluminum alloy sheet using a first transverse wave in the test of the present invention.
FIG. 12 is a schematic view of reflected waves in an aluminum alloy sheet using a second transverse wave superimposed oblique incident wave in the detection of the present invention.
Reference numerals:
a piezoelectric wafer 1, a detection wedge block 2, a calibration test block 3, a focusing focus 4, a 5 aluminum alloy sheet, a 6 probe, a 7 welding line, an 8 defect and a 9 sound beam;
31 flat heads, 32 circular arc surfaces and 33 transverse through holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a weld phased array ultrasonic detection method for an aluminum alloy sheet, which is different from the prior art in that: the detection method comprises the following steps: a. pretreating the detection surface; b. aiming at the welding line detection requirement of the aluminum alloy sheet, a tile-shaped focusing probe is designed to enable electrons in phased array ultrasonic detection to generate a focusing effect; c. preparing portable equipment for phased array ultrasonic detection, a detection wedge block and a calibration test block; d. calibrating the accuracy, the sound velocity and the sensitivity of the detection wedge block, and calibrating the encoder; e. and detecting on site, and then analyzing and judging according to phased array detection data and images.
In the step a, polishing the surface of the scanning table to remove foreign matters which prevent the probe from moving, and ensuring that the surface roughness Ra of a probe moving area is less than or equal to 12.5 mu m; the polishing range extends from the side edge of the welding seam to the two sides of the welding seam by more than 6 times, and the thickness is additionally added with 50mm; and determining a welding line detection range, and drawing detection marks and reference lines.
In the step b, the focusing probe is formed by arranging a plurality of piezoelectric wafers, each piezoelectric wafer is in an arc shape, the piezoelectric wafers are arranged to form a tile-shaped structure, the focusing focus is designed at the focusing position N of the electronic central angle of the phased array probe, the focusing focus refers to the transverse focusing depth of the probe, N is 1.5-2 times of the thickness of the aluminum alloy sheet, and the position deviation between the focusing focus and the central line of the probe is less than or equal to 2 degrees.
c, firstly, preparing a phased array ultrasonic detection wedge block, wherein the detection wedge block is made of machine glass or polystyrene, the refraction angle of ultrasonic sound waves of the probe ranges from 45 degrees to 75 degrees in an aluminum alloy material, and the refraction center angle of the probe ranges from 55 degrees to 60 degrees; in order to ensure that the detection surface is straight, if the detection surface is slightly bent, proper grinding is needed to ensure that the clearance between any point of the contact part of the wedge block and the detection surface is less than or equal to 0.5mm; secondly, designing a calibration test block, wherein one end of the calibration test block is a flat head, the other end of the calibration test block is an arc head, a transverse through hole with the diameter of 1mm is adopted, a first arc surface and a second arc surface are arranged, and the ratio of the diameters of the first arc surface to the second arc surface is 1:2. Specifically, the reason why the refraction angle of ultrasonic sound waves of the probe is controlled to be 45-75 degrees is that the ultrasonic sound waves are detected by transverse waves in the angle range, and all the ultrasonic sound waves in the aluminum alloy sheet are transverse waves and no longitudinal waves. Oblique incidence is adopted when the defect in the aluminum alloy sheet needs phased array ultrasonic detection, the opposite type defect reaction is insensitive when the angle is smaller than 45 degrees, and the longitudinal wave component is generated when the angle is larger than 75 degrees so as to influence the detection effect; secondly, the refractive central angle of the probe is 55-60 degrees (the central angle refers to the degree of the longitudinal refractive angle of the probe, the physical refractive angle of the probe is adopted, the refractive angle effect of 45-75 degrees can be realized by adopting an electronic deflection mode only when the physical refractive angle is adopted), the electronic focusing and electronic angle scanning (adopting time excitation to control the deflection of sound velocity) are adopted in the phased array detection, the probe is generally realized by adopting the mode of combining the central angle with the deflection of the upper and lower angles, and when the central angle exceeds 45-75 degrees, the energy loss is serious, the generated side lobes influence the detection result, and the false detection is caused.
The step d comprises the following steps: d1, placing the probe at the plane position of the test block by wedge delay, and calibrating by wedge; d2, carrying out sound velocity calibration by adopting first and second arc surface reflection; d3, setting the focusing depth to be 1.5-2.0 times of the thickness of the aluminum alloy sheet, moving a probe to scan a transverse through hole with the diameter of 1mm, and adding a distance amplitude curve to finish sensitivity calibration; d4, placing the phased array probe near the focus position of the main sound beam, moving the probe back and forth, adjusting gains of different angles to 70-85% level, and completing ACG calibration (angle amplitude calibration); and D5, after the encoder is connected with the portable phased array equipment, the actual length is moved to be more than or equal to 1000mm, the calibration length is calibrated, the calibration error is less than or equal to 1%, and the distance calibration of the encoder is completed.
In the step e, for the butt welding seam of the aluminum alloy sheet, a detection method of overlapping oblique incident waves of a first transverse wave and a second transverse wave is adopted, so that phased array ultrasonic energy is subjected to transverse physical focusing under preset conditions, defects such as air holes in the welding seam are detected, the first transverse wave forms a refraction wave, the second transverse wave overlaps the oblique incident waves to form a reflection wave, and the method is particularly shown in fig. 9 and 10; meanwhile, through the electronic deflection focusing design with the center angle of 55-60 degrees, the area defects of different angles can be detected in multiple angles, and the detection reliability is effectively improved.
When the butt welding seam is used, the main characteristics of the butt welding seam of the aluminum alloy sheet are that the welding seam area is nonmagnetic, the thickness is thinner, and the like, and for the butt welding seam, the common phased array ultrasonic detection technology has the problems of larger surface detection blind areas, and the like. Aiming at the butt welding seam of the aluminum alloy thin plate with the thickness of 5-15 mm, the invention adopts a detection method of combining transverse wave primary and secondary with oblique incidence, and makes phased array ultrasonic energy carry out transverse physical focusing under the preset condition by designing and customizing a tile-type wafer probe so as to be beneficial to detecting defects such as air holes in the welding seam; through the electron deflection focusing design with the center angle of 55-60 degrees, the area defects of different angles can be detected in multiple angles, and the detection reliability is effectively improved.
The invention has the following specific points:
1. the innovation point in the application is that the depth of focus of transverse focusing is designed by combining the specific thickness of the thin plate, namely the depth of focus design of the probe is performed by combining the characteristics of welding seams of the thin plate, and the special design can reduce the influence of interference waves to form a detectable condition
2. The test block design adopts two cambered surfaces with the radius of 10mm and 20mm for calibration, and because the focus focusing sound path is concentrated between the sound paths of 10-20, compared with the circular arc surface of the standard test block 50/100, the measured sound velocity error is smaller, the practical degree is higher, and the detection reliability is strong.
3. The phased array ultrasonic detection wafer adopts an arc design, as shown in fig. 4, the transverse diffusion of sound beams can be reduced, the arc radian is matched according to the focusing depth in steel, and the defect detection capability can be improved to the greatest extent. The concept of the directional design meets the requirement of customization. The problem of sound beam diffusion in conventional ultrasonic detection can be solved. In addition, the control array ultrasonic detection arc wafer is combined with an arc wedge block (made of materials such as organic glass and the like), so that focusing can be further generated, and a good detection effect is formed.
4. 1.0mm of transverse through holes, the fact that the wall thickness of an aluminum alloy sheet is smaller (4-15 mm) is considered, and the transverse through holes with the too large aperture are unfavorable for phased array ultrasonic detection positioning, quantification and sensitivity curve manufacturing; too small an aperture (less than 1 mm) makes the aperture much smaller than half of Yu Hengbo wavelength, resulting in missed detection and unreasonable set sensitivity.
Example 1
The phased array ultrasonic detection method for the aluminum alloy sheet butt welding seam comprises the following main steps of:
s1, surface pretreatment:
polishing the scanned surface to remove foreign matters (such as welding spatter, grooves and the like) which prevent the probe from moving, and ensuring the surface roughness Ra of the probe moving area to be less than or equal to 12.5 mu m. The polishing range is not less than 120mm from the side edge of the welding line to the outer two sides. The weld detection range is determined and the detection marks and reference lines are plotted as shown in fig. 2.
The reference line is used for guiding the phased array probe to walk in a specified direction. And drawing a reference line on the surface of the detected workpiece parallel to the welding line direction, wherein the distance (step offset) between the reference line and the welding line edge at one side of the detection area is determined according to the specific detection process design condition.
S2 watt probe design and customization:
the phased array probe (shown in fig. 3 specifically) is designed by adopting a tile type wafer, the focusing focus is designed to be plate thickness (depth) which is 2 times of depth of an electronic focusing central angle position of the phased array probe, the position deviation of a focusing Jiao Dianwei probe central line is not more than 2 degrees, the frequency range is 7.5MHz, the wedge type is that a transverse wave wedge material is polystyrene, and the refraction angle of ultrasonic sound waves of the probe is 55-70 degrees (central angle is 55-60 degrees) in an aluminum alloy material.
S3, preparing a phased array ultrasonic detection system:
the phased array ultrasonic detection system comprises equipment, wedges, scanning devices, system integration, process parameter design and calibration test block design and manufacture.
Further S3 comprises the following 6 steps:
s3a, preparing a phased array ultrasonic detection instrument to adopt a portable device (32/32), wherein the model is as follows: ISONIC2010, the equipment software is provided with a flat butt welding seam module and an unequal thickness welding seam detection module, and the software has a function of primary wave display and secondary wave image structure turnover.
And S3b, preparing a phased array ultrasonic detection wedge block, ensuring that the detection surface is straight, and if the detection surface is slightly bent, carrying out proper grinding to ensure that the gap between any point of the contact part of the wedge block and the detection surface is not more than 0.5mm.
S3c, preparing a manual phased array ultrasonic detection scanning mode by the scanning device, and placing the encoder at a proper position of the phased array probe in a stay wire mode.
S3d, system integration: according to the characteristics of the butt welding seam of the aluminum alloy thin plate, the selected phased array ultrasonic instrument, the tile type transverse wave phased array probe, the phased array ultrasonic wedge block and the phased array ultrasonic scanning device are connected through cables.
S3e, designing technological parameters: and establishing a test piece welding seam type and phased array ultrasonic beam coverage model by using software of the ISONIC phased array ultrasonic equipment, determining the ultrasonic beam full coverage of a test piece detection area, and setting parameters such as an applicable S scanning beam angle range, a focusing rule, the number of starting wafers, the number of wafers, scanning offset and the like. As shown in fig. 4:
s3f, designing a calibration test block, designing a transverse through hole with the diameter of 1mm, designing two arc surfaces R10 and R20, and ensuring that the design length of the test block meets the scanning requirement. As shown in particular in fig. 5;
s4, designing and manufacturing a calibration test block, sound velocity, wedge delay, sensitivity, ACG and encoder calibration:
further S4 comprises the following 5 steps:
s4a, a probe is placed at the plane position of a test block by wedge delay, calibration is performed by the wedge, calibration is automatically completed by equipment, and the calibration work is the special relevant function of ISONIC equipment, so that the specific working steps and working principles of the ISONIC equipment are not repeated in the prior art;
s4b, sound velocity calibration is carried out by adopting R10 and R20, two circular arc reflecting surfaces, wherein R10=10mm and R20=20mm;
and S4c, setting the focusing depth to be 2.0 times of the plate thickness, moving the probe to scan a transverse through hole with the diameter of 1.0mm, and adding a Distance Amplitude Curve (DAC) to finish the sensitivity calibration.
And S4d, placing the phased array probe near the focus position of the main sound beam (center angle), moving the probe back and forth, and adjusting gains of different angles to 80% to finish ACG calibration.
And S4e, after the encoder is connected with the portable phased array equipment, the actual length is moved by 300mm, the calibration length is calibrated, and the calibration error is not more than 1%. And (5) completing the distance calibration of the encoder.
S5, on-site detection: the detection section of the butt welding seam of the aluminum alloy sheet comprises the welding seam and base material areas with at least 2mm on two sides of the welding seam, a phased array fan-shaped scanning oblique incidence method is adopted, detection is implemented on one side and two sides of the welding seam, and collected detection data files are stored.
S6, judging according to recording and image analysis by using a phased array detection technology: and (3) carrying out validity check on the phased array detection data file according to standard general requirements, and after the phased array detection data file is qualified, adopting phased array ultrasonic analysis software to carry out analysis and interpretation so as to determine the positioning and quantification of the defects.
The detection results are shown in fig. 6 and 7 (the detection image analysis air holes and the detection image analysis are not fused), the detection effect is determined by the phased array ultrasonic detection of the air hole defects through physical anatomy, and the air holes with the diameter of 1mm can be successfully found. The unfused defect is determined by physical anatomy, the defect can be found by adopting 1-order wave and 2-order wave in image display, wherein the 1-order wave is insufficient in reflection equivalent due to the angle problem, and the 2-order wave is reflected by the bottom surface due to the proper angle, so that the reflection equivalent can be effectively detected.
Example 2
A phased array ultrasonic detection method of aluminum alloy sheet butt welding seam comprises a phased array ultrasonic detector, a tile type transverse wave phased array probe, a phased array ultrasonic wedge block, a phased array ultrasonic scanning device and a calibration test block to form a phased array ultrasonic detection system for detecting 8-10 mm thick (asymmetric) aluminum alloy sheet butt welding seam, which mainly comprises the following steps:
s1, surface pretreatment:
polishing the scanned surface to remove foreign matters (such as welding spatter, grooves and the like) which prevent the probe from moving, and ensuring the surface roughness Ra of the probe moving area to be less than or equal to 12.5 mu m. The polishing range extends from the side edge of the weld to the two sides of the weld by more than 6 times, and the thickness of the plate is additionally increased by 50mm. The weld detection range is determined and the detection marks and reference lines are plotted as shown in fig. 2.
The reference line is used for guiding the phased array probe to walk in a specified direction. And drawing a reference line on the surface of the detected workpiece parallel to the welding line direction, wherein the distance (step offset) between the reference line and the welding line edge at one side of the detection area is determined according to the specific detection process design condition.
S2 watt probe design and customization:
the phased array probe (see fig. 3 specifically) designed by using the tile-type wafer is designed, the depth N of the focusing focus at the electronic focusing center angle position of the phased array probe can be set to be 1.5-2 times of the plate thickness (depth), and the position deviation of the central line of the focusing Jiao Dianwei probe is not more than 2 degrees. The frequency ranges from 5MHz to 10MHz, the wedge type is that the transverse wave wedge material is organic glass or polystyrene, and the main refraction angle of ultrasonic sound waves of the probe is about 45-75 DEG (the central angle is 55-60 DEG) in the aluminum alloy material.
S3, preparing a phased array ultrasonic detection system:
the phased array ultrasonic detection system comprises equipment, wedges, scanning devices, system integration, process parameter design and calibration test block design and manufacture.
Further S3 comprises the following 6 steps:
s3a, preparing a phased array ultrasonic detection instrument to adopt a portable device, wherein equipment software adopts equipment software with a primary wave display and secondary wave image structure-following overturning function
And S3b, preparing a phased array ultrasonic detection wedge block, ensuring that the detection surface is straight, and if the detection surface is slightly bent, carrying out proper grinding to ensure that the gap between any point of the contact part of the wedge block and the detection surface is not more than 0.5mm.
S3c, preparing a scanning device to adopt a semi-automatic or manual phased array ultrasonic detection scanning mode, and fixing a probe on a scanning frame in the semi-automatic mode to connect with an encoder; under manual mode, the encoder is placed in a certain mode (wire drawing, direct fixation) at the proper position of the phased array probe.
S3d, system integration: according to characteristics of the butt welding seam of the aluminum alloy sheet for the ship, the selected phased array ultrasonic instrument, the tile transverse wave phased array probe, the phased array ultrasonic wedge block and the phased array ultrasonic scanning device are connected through cables.
S3e, designing technological parameters: and using phased array ultrasonic field simulation software to establish a test piece welding seam pattern and a phased array ultrasonic beam coverage model, determining the full coverage of ultrasonic beams in a test piece detection area, and setting parameters such as an applicable S scanning beam angle range, a focusing rule, an initial wafer, the number of wafers, scanning offset and the like.
S3f, designing a calibration test block, taking the characteristics of sheet aluminum alloy welding seams and phased array ultrasonic detection into consideration, designing two arc surfaces R10 and R20 by adopting a transverse through hole with the diameter of 1mm, and ensuring that the design length of the test block meets the scanning requirement. As shown in particular in fig. 4;
s4, designing and manufacturing a calibration test block, sound velocity, wedge delay, sensitivity, ACG and encoder calibration:
further S4 comprises the following 5 steps:
s4a, placing the probe at the plane position of the test block by wedge delay, and calibrating by the wedge, wherein the calibration is automatically completed by equipment;
s4b, sound velocity calibration is carried out by adopting R10 and R20 and two circular arc reflecting surfaces;
and S4c, setting the focusing depth to be 1.5-2.0 times of the plate thickness, moving the probe to scan a transverse through hole with the diameter of 1mm, and adding a Distance Amplitude Curve (DAC) to finish the sensitivity calibration.
And S4d, placing the phased array probe near the focus position of the main sound beam (center angle), moving the probe back and forth, and adjusting gains of different angles to a certain level (such as 80%), thereby completing ACG calibration.
S4e, after the encoder is connected with the portable phased array equipment, the actual moving length is not less than 1000mm, the calibration length is calibrated, and the calibration error is not more than 1%. And (5) completing the distance calibration of the encoder.
S5, on-site detection: the detection section of the butt welding seam of the aluminum alloy sheet for the ship comprises the welding seam and base material areas with at least 2mm on two sides of the welding seam, a phased array fan-shaped scanning oblique incidence method is adopted, detection is implemented on one side and two sides of the welding seam, and collected detection data files are stored.
S6, judging according to recording and image analysis by using a phased array detection technology: and analyzing, interpreting and determining the location and the quantification of the defects by adopting phased array ultrasonic analysis software.
The detection result is shown in FIG. 8 (the detected image analyzes dense pores)
The detection result shows that the dense air hole defects which are easy to generate on the upper surface of the welding line can be successfully found and identified through 1-time reflection (2-time waves), and the defects can be identified through an S-scanning interface during on-site detection data analysis, so that the effect is good. The adopted software can automatically turn over 2 secondary waves, and has good distinguishing performance with interference waves of a welding line structure and high detection reliability.
In summary, the probe provided by the invention adopts the tile-shaped design to customize the phased array probe, so that the surface blind area of the butt welding seam of the ultrasonic detection sheet can be reduced, the tile-shaped physical focusing can improve the transverse detection sensitivity of the detection target area, and the detection effect on common defects of the aluminum alloy welding seam such as small air holes is greatly improved.
The probe adopts the tile type design to customize the phased array probe, can reduce ultrasonic detection sheet metal butt weld's surface blind area, and tile type physical focusing can improve detection target area transverse detection sensitivity, has very big promotion to aluminium alloy welding seam common defect detection effect such as little gas pocket.
The special aluminum alloy sheet butt welding line calibration test block and the sensitivity standard reflector are designed and used for calibrating the phased array ultrasonic detection system, so that the detection rate, the good signal-to-noise ratio and the detection precision are ensured.
The software with the primary wave and secondary wave overturning functions is adopted, and the simulation of the weld joint structure is combined, so that the defect display is visual and the omission and false detection are small in the phased array detection of the aluminum alloy sheet weld joint. The quantitative and shaping method has the advantages that the quantitative and shaping method ensures that the phased array ultrasonic detection is more reliable and accurate in the detection of the welding line of the aluminum alloy sheet by adopting the listed equipment system calibration flow.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (2)
1. A welding seam phased array ultrasonic detection method for an aluminum alloy sheet is characterized by comprising the following steps of: the detection method is carried out on the butt welding seam of the aluminum alloy sheet with the thickness of 5 mm-15 mm, and comprises the following steps: a. preprocessing the detection surface, polishing the scanning table surface, removing foreign matters which obstruct the movement of the probe, and ensuring that the surface roughness Ra of the probe movement area is less than or equal to 12.5 mu m; the polishing range extends from the side edge of the welding seam to the two sides of the welding seam by more than 6 times, and the thickness is additionally added with 50mm; b. aiming at the welding line detection requirement of the aluminum alloy sheet, a tile-shaped focusing probe is designed to enable electrons in phased array ultrasonic detection to generate a focusing effect; c. preparing portable equipment for phased array ultrasonic detection, a detection wedge block and a calibration test block; d. calibrating the accuracy, the sound velocity and the sensitivity of the detection wedge block, and calibrating the encoder; e. detecting on site, and then analyzing and judging according to phased array detection data and images to finish detection; in the step b, the focusing probe is formed by arranging a plurality of piezoelectric wafers, each piezoelectric wafer is in an arc shape, and the plurality of piezoelectric wafers
The wafers are arranged to form a tile-shaped structure, the focusing focus is designed to be the thickness of the aluminum alloy thin plate with the depth N being 1.5-2 times, and the position deviation between the focusing focus and the central line of the probe is less than or equal to 2 degrees; c, firstly, preparing a phased array ultrasonic detection wedge block, wherein the detection wedge block is made of organic glass or polystyrene, the refraction angle of ultrasonic sound waves of the probe ranges from 45 degrees to 75 degrees in an aluminum alloy material, and the refraction center angle of the probe ranges from 55 degrees to 60 degrees; in order to ensure that the detection surface is straight, if the detection surface is slightly bent, grinding is needed, so that the gap between any point of the contact part of the wedge block and the detection surface is smaller than or equal to 0.5mm; secondly, designing a calibration test block, wherein one end of the calibration test block is a flat head, the other end of the calibration test block is an arc head, a transverse through hole with the diameter of 1mm is adopted, the arc head is provided with a first arc surface and a second arc surface, the first arc surface and the second arc surface with the radius of 10mm and the radius of 20mm are adopted, and the ratio of the diameters is 1:2, so that a focus focusing sound path is concentrated between 10-20 sound paths; the step d comprises the following steps: d1, placing the probe at the plane position of the test block by wedge delay, and calibrating by wedge; d2, carrying out sound velocity calibration by adopting first and second arc surface reflection; d3, setting the focusing depth to be 1.5-2.0 times of the thickness of the aluminum alloy sheet, moving a probe to scan a transverse through hole with the diameter of 1.0mm, and adding a distance amplitude curve to finish sensitivity calibration; d4, placing the phased array probe near the focus position of the main sound beam, moving the probe back and forth, and adjusting gains of different angles to 70-85% level to finish ACG calibration; d5, after the encoder is connected with the portable phased array equipment, moving the actual length to be more than or equal to 1000mm, calibrating the calibrated length, and completing the distance calibration of the encoder, wherein the calibration error is less than or equal to 1%; and e, performing transverse physical focusing on phased array ultrasonic energy under preset conditions by adopting a detection method of overlapping primary transverse waves and secondary transverse waves with oblique incident waves on the butt welding seam of the aluminum alloy sheet, and detecting the defect of the welding seam.
2. The ultrasonic detection method for the weld phased array of the aluminum alloy sheet according to claim 1, wherein the method comprises the following steps: in the step a, polishing the surface of the scanning table to remove foreign matters which prevent the probe from moving, and ensuring that the surface roughness Ra of a probe moving area is less than or equal to 12.5 mu m; the polishing range extends from the side edge of the welding seam to the two sides of the welding seam by more than 6 times, and the thickness is additionally added with 50mm; and determining a welding line detection range, and drawing detection marks and reference lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176696.5A CN112763574B (en) | 2020-10-28 | 2020-10-28 | Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176696.5A CN112763574B (en) | 2020-10-28 | 2020-10-28 | Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112763574A CN112763574A (en) | 2021-05-07 |
| CN112763574B true CN112763574B (en) | 2024-01-12 |
Family
ID=75693277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011176696.5A Active CN112763574B (en) | 2020-10-28 | 2020-10-28 | Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112763574B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607811A (en) * | 2021-07-16 | 2021-11-05 | 华北电力科学研究院有限责任公司 | Phased array ultrasonic detection test block and detection method for copper-aluminum transition wire clamp in butt joint through flash welding |
| CN113866279B (en) * | 2021-08-19 | 2023-11-10 | 中车唐山机车车辆有限公司 | Ultrasonic phased array detection method for curved surface double-shaft-shoulder friction stir welding seam |
| CN113899810A (en) * | 2021-08-26 | 2022-01-07 | 中国人民解放军空军工程大学航空机务士官学校 | Ultrasonic detection method for damage of aluminum-based stealth coating |
| CN115774051A (en) * | 2021-09-06 | 2023-03-10 | 核动力运行研究所 | Self-focusing phased array probe, manufacturing process and parameter determination method |
| CN114152675A (en) * | 2021-11-12 | 2022-03-08 | 无锡金诚工程技术服务有限公司 | Ultrasonic phased array detection method for flat plate butt weld of composite steel plate for bridge |
| CN114019024B (en) * | 2021-11-16 | 2023-09-15 | 南昌航空大学 | Method and system for measuring penetration of lower layer of welding seam in lap welding |
| CN114113331A (en) * | 2021-12-03 | 2022-03-01 | 上海船舶工程质量检测有限公司 | System and method for measuring longitudinal wave sound velocity distribution of material |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109257A (en) * | 1987-10-22 | 1989-04-26 | Hitachi Constr Mach Co Ltd | Focus probe |
| US5677490A (en) * | 1993-02-18 | 1997-10-14 | F. H. Gottfeld Gesellschaft Fur Zerstorungsfreie Werkstoffprufung Mbh | Ultrasonic testing device for weld seams in pipes, sheets and containers |
| CN102247164A (en) * | 2011-04-18 | 2011-11-23 | 华中科技大学 | Method for manufacturing high-frequency acoustic self-focusing spherical probe |
| CN102830170A (en) * | 2012-07-23 | 2012-12-19 | 中国科学院地质与地球物理研究所 | Control method and control device for obtaining coal sample transverse wave signal based on ultrasonic test |
| CN105403622A (en) * | 2015-11-07 | 2016-03-16 | 哈尔滨理工大学 | Sheet material damage identifying and positioning method |
| CN105548370A (en) * | 2016-01-29 | 2016-05-04 | 安徽理工大学 | Ultrasonic phased array probe for detecting curved surface workpiece |
| CN106442740A (en) * | 2016-08-31 | 2017-02-22 | 成都铁安科技有限责任公司 | Phased array self-aggregation probe, arc chipset and chip for detecting solid carriage axle |
| CN107490624A (en) * | 2017-09-19 | 2017-12-19 | 中国航空综合技术研究所 | Super thin metal weld inspection system and its detection method |
| CN108414616A (en) * | 2018-02-08 | 2018-08-17 | 中兴海陆工程有限公司 | TMCP steel plate butt weld phased array ultrasonic detecting methods |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0903232D0 (en) * | 2009-02-25 | 2009-04-08 | Saipem Spa | A method for testing pipeline welds |
-
2020
- 2020-10-28 CN CN202011176696.5A patent/CN112763574B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01109257A (en) * | 1987-10-22 | 1989-04-26 | Hitachi Constr Mach Co Ltd | Focus probe |
| US5677490A (en) * | 1993-02-18 | 1997-10-14 | F. H. Gottfeld Gesellschaft Fur Zerstorungsfreie Werkstoffprufung Mbh | Ultrasonic testing device for weld seams in pipes, sheets and containers |
| CN102247164A (en) * | 2011-04-18 | 2011-11-23 | 华中科技大学 | Method for manufacturing high-frequency acoustic self-focusing spherical probe |
| CN102830170A (en) * | 2012-07-23 | 2012-12-19 | 中国科学院地质与地球物理研究所 | Control method and control device for obtaining coal sample transverse wave signal based on ultrasonic test |
| CN105403622A (en) * | 2015-11-07 | 2016-03-16 | 哈尔滨理工大学 | Sheet material damage identifying and positioning method |
| CN105548370A (en) * | 2016-01-29 | 2016-05-04 | 安徽理工大学 | Ultrasonic phased array probe for detecting curved surface workpiece |
| CN106442740A (en) * | 2016-08-31 | 2017-02-22 | 成都铁安科技有限责任公司 | Phased array self-aggregation probe, arc chipset and chip for detecting solid carriage axle |
| CN107490624A (en) * | 2017-09-19 | 2017-12-19 | 中国航空综合技术研究所 | Super thin metal weld inspection system and its detection method |
| CN108414616A (en) * | 2018-02-08 | 2018-08-17 | 中兴海陆工程有限公司 | TMCP steel plate butt weld phased array ultrasonic detecting methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112763574A (en) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112763574B (en) | Phased array ultrasonic detection method for butt welded joint of aluminum alloy sheet | |
| CA2593894C (en) | A method for configuring an array of transducers in an ultrasonic test apparatus | |
| CN111537612B (en) | Phased array detection and assessment method for austenitic stainless steel small-diameter pipe welding joint | |
| US9032802B2 (en) | Phased array system and method for inspecting helical submerged arcs weld (HSAW) | |
| US7693251B2 (en) | Method and apparatus for ultrasonic inspection of reactor pressure vessel | |
| WO2020048373A1 (en) | Intermediate and large diameter thin-walled tube non-destructive detection method based on phased array ultrasonic flaw detector | |
| CN106290583A (en) | A kind of ultrasonic phase array detection Small-diameter Tube Seams Special test block | |
| CN215641043U (en) | Special reference block for ultrasonic detection of medium-thin wall austenitic stainless steel pipe butt weld | |
| CN102967654A (en) | Ultrasonic flaw detection method of surfacing steel pipe from base material side | |
| CN110988139A (en) | Phased array ultrasonic detection method for welding buoy base plate and sampan | |
| KR20100124242A (en) | Calibration block (reference block) and calibration procedure for phased-array ultrasonic inspection | |
| EP0619489A1 (en) | Method of inspecting repaired stub tubes in boiling water nuclear reactors | |
| CN108459086B (en) | Manual ultrasonic inspection method for large thick-wall dissimilar metal weld joint | |
| CN112798685B (en) | U-rib weld joint detection method based on ultrasonic phased array | |
| KR20100124238A (en) | Calibration block (reference block) and calibration procedure for phased-array ultrasonic inspection | |
| CN112255307A (en) | Ultrasonic phased array detection method for all-welded ball valve gland weld joint | |
| CN109507302B (en) | Comparative reflector test block and method for measuring weld defects of thinner plates | |
| CN110672725A (en) | Depth positioning test block and positioning method for weld defects of spiral submerged arc welded steel pipe | |
| CN115711944A (en) | Electron beam weld penetration detection method and device based on water immersion ultrasonic phased array | |
| CN1138699A (en) | Supersonic testing method for butt welding seam of narrow-bore tube | |
| CN115112766A (en) | Ultrasonic phased array inspection method for weld joint | |
| CN114624337A (en) | Barrel longitudinal weld TOFD detection defect depth correction method | |
| CN114324578A (en) | Ferrite steel container sheet butt weld phased array ultrasonic detection method | |
| CN112326799A (en) | Method for applying phased array technology to pressure pipeline regular inspection and grading | |
| CN112326798A (en) | Ultrasonic detection method for defects of T-shaped welding seam area of crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 200032 floor 1, building 4, 851 Zhongshan South 2nd Road, Xuhui District, Shanghai Applicant after: SHANGHAI SHIP ENGINEERING QUALITY TESTING CO.,LTD. Applicant after: Shanghai Shipbuilding Technology Research Institute (the 11th Research Institute of China Shipbuilding Corp.) Address before: 200032 floor 1, building 4, 851 Zhongshan South 2nd Road, Xuhui District, Shanghai Applicant before: SHANGHAI SHIP ENGINEERING QUALITY TESTING CO.,LTD. Applicant before: SHIPBUILDING TECHNOLOGY Research Institute (NO 11 RESEARCH INSTITUTE OF CHINA STATE SHIPBUILDING Corp.,Ltd.) |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |