CN110824003A - Ultrasonic partition focusing detection method - Google Patents

Ultrasonic partition focusing detection method Download PDF

Info

Publication number
CN110824003A
CN110824003A CN201911041580.8A CN201911041580A CN110824003A CN 110824003 A CN110824003 A CN 110824003A CN 201911041580 A CN201911041580 A CN 201911041580A CN 110824003 A CN110824003 A CN 110824003A
Authority
CN
China
Prior art keywords
ultrasonic
ultrasonic probe
sample
depth
flaw detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911041580.8A
Other languages
Chinese (zh)
Inventor
梁菁
史亦韦
沙正骁
韩波
权鹏
王晓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AECC Beijing Institute of Aeronautical Materials
Original Assignee
AECC Beijing Institute of Aeronautical Materials
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AECC Beijing Institute of Aeronautical Materials filed Critical AECC Beijing Institute of Aeronautical Materials
Priority to CN201911041580.8A priority Critical patent/CN110824003A/en
Publication of CN110824003A publication Critical patent/CN110824003A/en
Pending legal-status Critical Current

Links

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
    • G01N29/043—Analysing solids in the interior, e.g. by 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/221—Arrangements for directing or focusing the acoustical 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
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
    • 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
    • G01N2291/028—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
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

The invention belongs to the field of nondestructive testing, and relates to an ultrasonic subarea focusing detection method. The invention provides a method for detecting the internal defects of a metal material by utilizing a focusing probe in a partitioning manner, which overcomes the defect of low detection sensitivity of a common flat probe, greatly improves the sensitivity of ultrasonic detection and realizes the ultrasonic nondestructive detection of the tiny defects in the metal.

Description

Ultrasonic partition focusing detection method
Technical Field
The invention relates to an ultrasonic subarea focusing detection method, belonging to the field of nondestructive detection.
Background
When in ultrasonic detection, the sound pressure at the position far away from the sound source is lower due to the diffusion of the ultrasonic sound beam, so that the defect echo at the deeper part of the buried depth is reduced, the detection capability of the ultrasonic is weakened,
disclosure of Invention
The invention designs an ultrasonic subarea focusing detection method aiming at the problems, and the purpose of the invention is realized by the following technical scheme:
the method comprises the following steps:
an ultrasonic subarea focusing detection method comprises the following steps:
1.1 placing and partitioning the sample;
1.2 connecting scanning equipment and selecting an ultrasonic probe;
1.3, measuring the effective sound beam width of the ultrasonic probe;
1.4 setting detection parameters;
1.5, scanning in a subarea, setting a scanning starting point and a scanning end point in the ultrasonic flaw detector, and starting subarea scanning until subarea scanning is finished;
1.6 repeat steps 1.2-1.5 until detection of all the partitions of the sample is completed.
In step 1.1, the requirement of the sample is that the surface roughness Ra of the sample is better than 0.8 μm, the sample is immersed in water, and the distance between the highest point of the sample and the water surface is more than one fourth of the thickness h of the sample.
In step 1.1, the partitioning method of the sample partition is as follows: partitioning the sample according to different depths, recording the machining allowance of the sample as a, a as a constant and inDepth increment for nth partition; the depth of the first partition is a to a + i1The second partition is from a + i1To a + i2… …, m-th partition from a + im-1To a + imUp to a + imGreater than the sample thickness h, at which point the starting point of the last partition is a + im-1The end point is h.
The process of selecting the connecting equipment and the ultrasonic probe in the step 1.2 is as follows: the transmitting/receiving interface of the ultrasonic flaw detector is connected with the ultrasonic probe through a coaxial cable, the ultrasonic probe is arranged on a scanning frame or a mechanical arm which can do multi-axis cooperative motion, the ultrasonic probe is controlled by the scanning frame or the mechanical arm to be vertical to the surface of the sample, the distance Wp between the end surface of the ultrasonic probe and the surface of the sample is kept to be g, if the surface of the sample is a curved surface, the ultrasonic probe is controlled by the scanning frame or the mechanical arm to enable the axis of the ultrasonic probe to coincide with the normal of the surface of the sample, and the distance Wp is kept to be g, wherein g is f-2(2a + i)m-1+im) F is an ultrasonic probeThe focal length g is more than one fourth of h and more than 50mm, if the condition is not met, an ultrasonic probe with a larger focal length is adopted,
step 1.2, the buried depth is selected to be a + im-1The cylindrical flat-bottom hole standard test block ensures that the axis of the ultrasonic probe is coincided with the axis of the standard test block, the distance between the end surface of the ultrasonic probe and the upper end surface of the standard test block is G, the sensitivity of the ultrasonic flaw detector is adjusted to ensure that the reflection echo of the flat-bottom hole reaches 80 percent of the full screen, and the sensitivity at the moment is Gm-1The depth of burial is selected to be a + imRepeating the above process to obtain a standard test block with sensitivity Gm，|Gm-Gm-1If the condition is not met, | should be less than Δ, the ultrasound probe is reselected.
Step 1.3 the process of measuring the effective sound beam width of the ultrasonic probe comprises the following steps: selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imThe axial line of the ultrasonic probe is made to coincide with the axial line of a standard test block with the burial depth dmin, the distance between the end face of the ultrasonic probe and the upper end face of the standard test block is g, the sensitivity of the ultrasonic flaw detector is adjusted to enable the reflection echo of the flat-bottom hole to reach 80% of the full screen, the sensitivity at the moment is Gmin, the ultrasonic probe is moved along the aperture direction of the flat-bottom hole until the reflection echo of the flat-bottom hole reaches 40% of the full screen, the moving distance of the ultrasonic probe is Pmin, the sound beam width of the ultrasonic probe is 2Pmin, the steps are repeated until the sound beam width 2Pmax of the ultrasonic probe corresponding to the standard test block with the burial depth dmax is obtained, and the minimum value is selected as the effective sound beam width of the ultrasonic probe in the sound beam width measured values of the series of the flat-bottom hole standard test.
Step 1.4, the process of setting detection parameters is as follows:
adjusting sensitivity
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imOpening the distance amplitude compensation editing function of the ultrasonic flaw detector to enable the axis of the ultrasonic probe to coincide with the axis of the standard test block with the burial depth dmin and enable the distance between the end face of the ultrasonic probe and the upper end face of the standard test block to be gAdjusting the sensitivity of the ultrasonic flaw detector to enable the reflection echo of the flat-bottom hole to reach 80% of the full screen, wherein the sensitivity is Gmin, inputting the burial depths dmin and Gmin into a DAC list of the flaw detector, repeating the steps to obtain all sensitivity values of the standard test block with the burial depths ranging from dmin to dmax, inputting the burial depths of all the standard test blocks and the corresponding sensitivity values into the DAC list of the flaw detector, forming a DAC curve of the ultrasonic probe in the subarea by the ultrasonic flaw detector after storage, opening or calling the curve, then adjusting the sensitivity of the ultrasonic flaw detector, and increasing or reducing the sensitivity A;
adjustable sampling door
Adjusting a sampling gate of the ultrasonic flaw detector to enable the starting point to be a + im-1S1, end point a + im+ s2, if the first partition is the sample machining allowance a, s1 is the distance between the starting depth of the partition and the starting point of the sampling gate, s2 is the distance between the ending point of the sampling gate and the ending depth of the partition, if the last partition is the sampling gate, the ending point of the sampling gate is h-1mm or h-1.5mm, the height of the sampling gate is not higher than 40% of the full screen,
setting scanning parameters
Setting a scanning interval in the ultrasonic flaw detector, wherein the scanning interval is not more than one third of the width of an effective sound beam, setting a repetition frequency in the ultrasonic flaw detector, the repetition frequency is selected to be as large as possible on the premise of not generating phantom waves, and setting a scanning speed in the ultrasonic flaw detector, wherein the scanning speed is not more than the product of the repetition frequency and the scanning interval.
The partitioning of step 1.1 is performed in the following manner:
table 1: partition mode
Area code 1 2 3 4 5 6 7
Starting depth mm Allowance a for machining 13 25 38 50 63 89
End depth mm 13 25 38 50 63 89 140
The partitioning of step 1.1 is performed in the following manner:
table 2: partition mode
Figure BDA0002251546210000031
Figure BDA0002251546210000041
The partitioning of step 1.1 is performed in the following manner:
table 3: partition mode
Area code 1 2 3 4
Starting depth mm Allowance a for machining 25 50 76
End depth mm 25 50 76 140
The invention has the advantages and beneficial effects that:
the invention develops an ultrasonic subarea focusing detection method, overcomes the problem of reduced detection sensitivity of defects caused by ultrasonic sound beam diffusion in non-subarea detection, and realizes high-sensitivity ultrasonic detection of a sample.
Detailed Description
The working principle of the invention is as follows:
the focusing ultrasonic probe has the strongest defect finding capability in the focusing area, and by utilizing the characteristic, the invention divides the sample, uses the focusing probes with different specifications in different areas or adjusts the water distance of the probes so as to adjust the focusing depth, thereby ensuring that the defects of different burial depths of the sample are all in the focusing area, and improving the detection capability of ultrasonic detection.
Example 1
FGH96 powder superalloy samples with a thickness of 140mm, which have the following steps of zone focusing detection:
the method comprises the following steps:
1.1 sample requirement and Placement
The surface roughness Ra of the sample is processed to be better than 0.8 mu m, the sample is immersed into water, the distance between the highest point of the sample and the water surface is 200mm,
1.2 sample partitioning
The samples were partitioned according to the following table
Partition mode
Figure BDA0002251546210000042
Detecting each partition by adopting the steps of 1.3-1.8:
1.3 connecting device and Probe selection
The transmitting/receiving interface of the ultrasonic flaw detector is connected with an ultrasonic probe through a coaxial cable, the ultrasonic probe is arranged on a scanning frame or a mechanical arm which can do multi-axis cooperative motion, the scanning frame or the mechanical arm controls the probe to be vertical to the surface of a sample and keeps the distance Wp between the end surface of the probe and the surface of the sample to be g, if the surface of the sample is a curved surface, the scanning frame or the mechanical arm controls the probe to make the axis of the probe coincide with the normal of the surface of the sample and keeps the water distance to be g, and g is the focal length f-2(2a + i) of the probe (2a + i)m-1+im) G is more than 50mm, if g is not more than 50mm, a probe with larger focal length is adopted,
the buried depth is selected to be a + im-1The cylindrical flat-bottom hole standard test block ensures that the axis of the probe is coincided with the axis of the standard test block, the distance between the end surface of the probe and the upper end surface of the standard test block is G, the sensitivity of the ultrasonic flaw detector is adjusted to ensure that the reflection echo of the flat-bottom hole reaches 80 percent of the full screen, and the sensitivity at the moment is Gm-1The depth of burial is selected to be a + imRepeating the above process to obtain a standard test block with sensitivity Gm，|Gm-Gm-1If the condition is not met, | should be less than 2dB, the probe is reselected,
1.4 measuring effective acoustic beam width of Probe
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + in-1Dmax is not less than a + inThe axial line of the probe is coincided with the axial line of a standard test block with the burial depth dmin, the distance between the end face of the probe and the upper end face of the standard test block is g, the sensitivity of the ultrasonic flaw detector is adjusted to enable the flat-bottom hole reflection echo to reach 80 percent of the full screen, the sensitivity at the moment is Gmin, the probe is moved along the aperture direction of the flat-bottom hole until the flat-bottom hole reflection echo reaches 40 percent of the full screen, the moving distance of the probe is Pmin, the sound beam width of the probe is 2Pmin, the steps are repeated until the minimum value of the sound beam widths 2Pmax, 2Pmin to 2Pmax of the probe corresponding to the standard test block with the burial depth dmax and all the measured sound beam widths between the two is obtained as the effective sound beam width of the probe,
1.5 adjustment of sensitivity
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imOpening the Distance Amplitude Compensation (DAC) editing function of the ultrasonic flaw detector to enable the axis of the probe to coincide with the axis of a standard test block with the burial depth dmin and enable the distance between the end face of the probe and the upper end face of the standard test block to be g, adjusting the sensitivity of the ultrasonic flaw detector to enable the flat-bottom hole reflection echo to reach 80% of the full screen, enabling the sensitivity to be Gmin at the moment, inputting the burial depth dmin and the Gmin into a DAC list of the flaw detector, repeating the steps until the sensitivity Gmax and the burial depth dmax of the ultrasonic flaw detector corresponding to the standard test block with the burial depth dmax are input into the DAC list of the flaw detector, and forming the Distance Amplitude Compensation (DAC) editing function by the ultrasonic flaw detector after storageThe DAC curve of the probe under the subarea is opened or called, then the sensitivity of the ultrasonic flaw detector is adjusted, the sensitivity A is increased or decreased,
1.6 adjusting the sampling gate
Adjusting a sampling gate of the ultrasonic flaw detector to enable the starting point to be a + im-1-2mm, end point a + im+2mm, the starting point of the sampling gate is the machining allowance a of the sample if the first zone is the first zone, the end point of the sampling gate is 139mm if the last zone is the last zone, the height of the sampling gate is 10% of the full screen,
1.7 setting scanning parameters
Setting a scanning interval in the ultrasonic flaw detector, wherein the scanning interval is not more than one third of the width of an effective sound beam, setting a repetition frequency in the ultrasonic flaw detector, the repetition frequency is selected as large as possible on the premise of not generating phantom waves, setting a scanning speed in the ultrasonic flaw detector, the scanning speed is not more than the product of the repetition frequency and the scanning interval,
1.8 scanning
Setting a scanning starting point and a scanning finishing point in the ultrasonic flaw detector, starting scanning until scanning is finished,
1.9 repeating steps 1.3-1.8 until the detection of all the partitions is completed,
example 2
FGH96 powder superalloy samples with a thickness of 35mm, which have the following steps of zone focusing detection:
the method comprises the following steps:
1.1 sample requirement and Placement
The surface roughness Ra of the sample is processed to be better than 0.8 mu m, the sample is immersed into water, the distance between the highest point of the sample and the water surface is 100mm,
1.2 sample partitioning
The samples were partitioned according to the following table
Partition system 2
Area code 1 2 3 4 5 6
Starting depth mm Allowance a for machining 6 13 19 25 32
End depth mm 6 13 19 25 32 35
Detecting each partition by adopting the steps of 1.3-1.8:
1.3 connecting device and Probe selection
The transmitting/receiving interface of the ultrasonic flaw detector is connected with the ultrasonic probe through a coaxial cable, the ultrasonic probe is arranged on a scanning frame or a mechanical arm which can perform multi-axis cooperative motion, the scanning frame or the mechanical arm controls the probe to be vertical to the surface of the sample and keeps the distance between the end surface of the probe and the surface of the sampleG is the distance Wp, if the sample surface is a curved surface, the axis of the probe is controlled by a scanning frame or a mechanical arm to be coincident with the normal of the sample surface, and the water distance is kept to be g, which is the focal length f-2(2a + i) of the probem-1+in) G is more than 50mm, if g is not more than 50mm, a probe with larger focal length is adopted,
the buried depth is selected to be a + im-1The cylindrical flat-bottom hole standard test block ensures that the axis of the probe is coincided with the axis of the standard test block, the distance between the end surface of the probe and the upper end surface of the standard test block is G, the sensitivity of the ultrasonic flaw detector is adjusted to ensure that the reflection echo of the flat-bottom hole reaches 80 percent of the full screen, and the sensitivity at the moment is Gm-1The depth of burial is selected to be a + imRepeating the above process to obtain a standard test block with sensitivity Gm，|Gm-Gm-1If the condition is not met, | should be less than 1dB, the probe is reselected,
1.4 measuring effective acoustic beam width of Probe
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imThe axial line of the probe is coincided with the axial line of a standard test block with the burial depth dmin, the distance between the end face of the probe and the upper end face of the standard test block is g, the sensitivity of the ultrasonic flaw detector is adjusted to enable the flat-bottom hole reflection echo to reach 80 percent of the full screen, the sensitivity at the moment is Gmin, the probe is moved along the aperture direction of the flat-bottom hole until the flat-bottom hole reflection echo reaches 40 percent of the full screen, the moving distance of the probe is Pmin, the sound beam width of the probe is 2Pmin, the steps are repeated until the minimum value of the sound beam widths 2Pmax, 2Pmin to 2Pmax of the probe corresponding to the standard test block with the burial depth dmax and all the measured sound beam widths between the two is obtained as the effective sound beam width of the probe,
1.5 adjustment of sensitivity
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imOpening the distance amplitude compensation editing function of the ultrasonic flaw detector to enable the axis of the probe to coincide with the axis of the standard test block with the burial depth dmin and enable the distance between the end face of the probe and the upper end face of the standard test block to be g, and adjusting the ultrasonic flaw detectorThe sensitivity of the method is that the reflection echo of the flat-bottom hole reaches 80% of the full screen, the sensitivity is Gmin at the moment, the burial depths dmin and Gmin are input into a DAC list of the flaw detector, the steps are repeated until the sensitivity Gmax and the burial depth dmax of the ultrasonic flaw detector corresponding to the standard test block with the burial depth dmax are input into the DAC list of the flaw detector, after the storage, the ultrasonic flaw detector forms a DAC curve of the probe in the subarea, the curve is opened or called, then the sensitivity of the ultrasonic flaw detector is adjusted, and the sensitivity A is increased or decreased,
1.6 adjusting the sampling gate
Adjusting a sampling gate of the ultrasonic flaw detector to enable the starting point to be a + im-1-2mm, end point a + im+2mm, the starting point of the sampling gate is the machining allowance a of the sample if the first zone, the end point of the sampling gate is 34mm if the last zone, the height of the sampling gate is 20% of the full screen,
1.7 setting scanning parameters
Setting a scanning interval in the ultrasonic flaw detector, wherein the scanning interval is not more than one third of the width of an effective sound beam, setting a repetition frequency in the ultrasonic flaw detector, the repetition frequency is selected as large as possible on the premise of not generating phantom waves, setting a scanning speed in the ultrasonic flaw detector, the scanning speed is not more than the product of the repetition frequency and the scanning interval,
1.8 scanning
Setting a scanning starting point and a scanning finishing point in the ultrasonic flaw detector, starting scanning until scanning is finished,
1.9 repeating steps 1.3-1.8 until the detection of all the partitions is completed,
the ultrasonic probe frequency can be selected from 5MHz, 10MHz, 15MHz, 20MHz and the like, the probe wafer diameter can be selected from 9.5mm, 11mm, 12.7mm, 19mm, 25mm and the like, and the probe focal length can be selected from 76mm, 89mm, 100mm, 150mm, 152mm, 200mm, 250mm, 330mm and 400 mm.

Claims (10)

1. An ultrasonic subarea focusing detection method is characterized by comprising the following steps:
1.1 placing and partitioning the sample;
1.2 connecting scanning equipment and selecting an ultrasonic probe;
1.3, measuring the effective sound beam width of the ultrasonic probe;
1.4 setting detection parameters;
1.5, scanning in a subarea, setting a scanning starting point and a scanning end point in the ultrasonic flaw detector, and starting subarea scanning until subarea scanning is finished;
1.6 repeat steps 1.2-1.5 until detection of all the partitions of the sample is completed.
2. The method of claim 1, wherein in step 1.1, the sample is required to have a surface roughness Ra of better than 0.8 μm, and the sample is immersed in water with a distance between the highest point of the sample and the water surface of more than a quarter of the thickness h of the sample.
3. The ultrasonic zone-focusing detection method according to claim 2, characterized in that in step 1.1, the zone-dividing method of the sample zone is as follows: partitioning the sample according to different depths, recording the machining allowance of the sample as a, a as a constant and inDepth increment for nth partition; the depth of the first partition is a to a + i1The second partition is from a + i1To a + i2… …, m-th partition from a + im-1To a + imUp to a + imGreater than the sample thickness h, at which point the starting point of the last partition is a + im-1The end point is h.
4. The ultrasound zonal focus detection method of claim 3, wherein the process of connecting equipment and ultrasound probe selection in step 1.2 is as follows: the transmitting/receiving interface of the ultrasonic flaw detector is connected with the ultrasonic probe through a coaxial cable, the ultrasonic probe is arranged on a scanning frame or a mechanical arm which can do multi-axis cooperative motion, the ultrasonic probe is controlled by the scanning frame or the mechanical arm to be vertical to the surface of the sample, the distance Wp between the end surface of the ultrasonic probe and the surface of the sample is kept to be g, if the surface of the sample is a curved surface, the ultrasonic probe is controlled by the scanning frame or the mechanical arm to enable the axis of the ultrasonic probe to coincide with the normal of the surface of the sample, and the distance Wp is kept to be g, wherein g is f-2(2a + i)m-1+im) F is the focal length of the ultrasonic probe, g is more than one fourth of h and more than 50mm, and if the condition is not met, the ultrasonic probe with the larger focal length is adopted.
5. The ultrasonic zone-focusing detection method according to claim 4, characterized in that the buried depth a + i is selected in step 1.2m-1The cylindrical flat-bottom hole standard test block ensures that the axis of the ultrasonic probe is coincided with the axis of the standard test block, the distance between the end surface of the ultrasonic probe and the upper end surface of the standard test block is G, the sensitivity of the ultrasonic flaw detector is adjusted to ensure that the reflection echo of the flat-bottom hole reaches 80 percent of the full screen, and the sensitivity at the moment is Gm-1The depth of burial is selected to be a + imRepeating the above process to obtain a standard test block with sensitivity Gm，|Gm-Gm-1If the condition is not met, | should be less than Δ, the ultrasound probe is reselected.
6. The ultrasonic zone-focusing detection method according to claim 4, wherein the step 1.3 of measuring the effective beam width of the ultrasonic probe comprises the following steps: selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imThe axial line of the ultrasonic probe is made to coincide with the axial line of a standard test block with the burial depth dmin, the distance between the end face of the ultrasonic probe and the upper end face of the standard test block is g, the sensitivity of the ultrasonic flaw detector is adjusted to enable the reflection echo of the flat-bottom hole to reach 80% of the full screen, the sensitivity at the moment is Gmin, the ultrasonic probe is moved along the aperture direction of the flat-bottom hole until the reflection echo of the flat-bottom hole reaches 40% of the full screen, the moving distance of the ultrasonic probe is Pmin, the sound beam width of the ultrasonic probe is 2Pmin, the steps are repeated until the sound beam width 2Pmax of the ultrasonic probe corresponding to the standard test block with the burial depth dmax is obtained, and the minimum value is selected as the effective sound beam width of the ultrasonic probe in the sound beam width measured values of the series of the flat-bottom hole standard test.
7. The ultrasound zone-focusing detection method according to claim 6, wherein the step 1.4 sets the detection parameter process to:
adjusting sensitivity
Selecting a series of cylindrical flat-bottom hole standard test blocks with the burial depth from dmin to dmax, wherein dmin is not more than a + im-1Dmax is not less than a + imOpening the distance amplitude compensation editing function of the ultrasonic flaw detector to enable the axis of the ultrasonic probe to coincide with the axis of a standard test block with the burial depth dmin and enable the distance between the end face of the ultrasonic probe and the upper end face of the standard test block to be g, adjusting the sensitivity of the ultrasonic flaw detector to enable the reflection echo of a flat-bottom hole to reach 80% of the full screen, enabling the sensitivity to be Gmin at the moment, inputting the burial depths dmin and Gmin into a DAC list of the flaw detector, repeating the steps to obtain all sensitivity values of the standard test block with the burial depth from dmin to dmax, inputting the burial depths of all the standard test blocks and the corresponding sensitivity values into the DAC list of the flaw detector, forming a DAC curve of the ultrasonic probe under the subarea by the ultrasonic flaw detector after storage, opening or calling the curve, then adjusting the sensitivity of the ultrasonic flaw detector to increase or decrease the sensitivity A,
adjustable sampling door
Adjusting a sampling gate of the ultrasonic flaw detector to enable the starting point to be a + im-1S1, end point a + im+ s2, if the first partition is the sample machining allowance a, s1 is the distance between the starting depth of the partition and the starting point of the sampling gate, s2 is the distance between the ending point of the sampling gate and the ending depth of the partition, if the last partition is the sampling gate, the ending point of the sampling gate is h-1mm or h-1.5mm, the height of the sampling gate is not higher than 40% of the full screen,
setting scanning parameters
Setting a scanning interval in the ultrasonic flaw detector, wherein the scanning interval is not more than one third of the width of an effective sound beam, setting a repetition frequency in the ultrasonic flaw detector, the repetition frequency is selected to be as large as possible on the premise of not generating phantom waves, and setting a scanning speed in the ultrasonic flaw detector, wherein the scanning speed is not more than the product of the repetition frequency and the scanning interval.
8. The ultrasonic zone-focusing inspection method of claim 3, characterized in that the zone division of step 1.1 is performed in the following manner:
table 1: partition mode
Area code 1 2 3 4 5 6 7 Starting depth mm Allowance a for machining 13 25 38 50 63 89 End depth mm 13 25 38 50 63 89 140
9. The ultrasonic zone-focusing inspection method of claim 3, characterized in that the zone division of step 1.1 is performed in the following manner:
table 2: partition mode
Area code 1 2 3 4 5 6 Starting depth mm Allowance a for machining 6 13 19 25 32 End depth mm 6 13 19 25 32 38
10. The ultrasonic zone-focusing inspection method of claim 3, characterized in that the zone division of step 1.1 is performed in the following manner:
table 3: partition mode
Area code 1 2 3 4 Starting depth mm Allowance a for machining 25 50 76 End depth mm 25 50 76 140
CN201911041580.8A 2019-10-29 2019-10-29 Ultrasonic partition focusing detection method Pending CN110824003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911041580.8A CN110824003A (en) 2019-10-29 2019-10-29 Ultrasonic partition focusing detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911041580.8A CN110824003A (en) 2019-10-29 2019-10-29 Ultrasonic partition focusing detection method

Publications (1)

Publication Number Publication Date
CN110824003A true CN110824003A (en) 2020-02-21

Family

ID=69551199

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911041580.8A Pending CN110824003A (en) 2019-10-29 2019-10-29 Ultrasonic partition focusing detection method

Country Status (1)

Country Link
CN (1) CN110824003A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118169246A (en) * 2024-05-15 2024-06-11 昆山市建设工程质量检测中心 Rapid detection method and detection system for damage of bridge inhaul cable anchoring area

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235111A (en) * 1976-09-29 1980-11-25 Siemens Aktiengesellschaft Apparatus for ultrasonic scanning
EP2352023A1 (en) * 2008-11-19 2011-08-03 Sumitomo Metal Industries, Ltd. Ultrasonic flaw detection method and device
CN102282463A (en) * 2008-11-19 2011-12-14 住友金属工业株式会社 Method and apparatus for ultrasonically detecting flaw of welded portion
CN102435673A (en) * 2011-09-14 2012-05-02 沈阳黎明航空发动机(集团)有限责任公司 Ultrasonic detection method for powder plate
JP2013156166A (en) * 2012-01-30 2013-08-15 Mitsubishi Heavy Ind Ltd Ultrasonic flaw detection method
CN103267801A (en) * 2013-04-22 2013-08-28 北京隆盛泰科石油管科技有限公司 Submerged-arc welding line automatic-ultrasonic detection method for oil gas conveying steel pipe manufacture
CN103543200A (en) * 2013-09-30 2014-01-29 中国航空工业集团公司北京航空材料研究院 Method for determining total focusing rule determination method before flaw detection by ultrasonic phased array probe
KR20160050615A (en) * 2014-10-30 2016-05-11 두산중공업 주식회사 Appartus and method for inspecting defect of partion connecting portion of diaphragm assembly
CN107796876A (en) * 2017-10-24 2018-03-13 武汉理工大学 A kind of ring automation multifrequency array focuses on ultrasonic no damage detection device and method
CN108982675A (en) * 2018-07-18 2018-12-11 东北轻合金有限责任公司 A kind of determination method of ultrasonic examination scanning spacing
CN110007003A (en) * 2019-04-10 2019-07-12 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) Partition method for the non-homogeneous metal thick plate welding-seam phased array supersonic detection of the velocity of sound
CN110824015A (en) * 2019-10-29 2020-02-21 中国航发北京航空材料研究院 Ultrasonic evaluation method for powder superalloy density distribution imaging
CN113075297A (en) * 2021-05-06 2021-07-06 西部超导材料科技股份有限公司 Titanium alloy phased array linear array ultrasonic detection sound field model construction method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4235111A (en) * 1976-09-29 1980-11-25 Siemens Aktiengesellschaft Apparatus for ultrasonic scanning
EP2352023A1 (en) * 2008-11-19 2011-08-03 Sumitomo Metal Industries, Ltd. Ultrasonic flaw detection method and device
CN102282463A (en) * 2008-11-19 2011-12-14 住友金属工业株式会社 Method and apparatus for ultrasonically detecting flaw of welded portion
CN102435673A (en) * 2011-09-14 2012-05-02 沈阳黎明航空发动机(集团)有限责任公司 Ultrasonic detection method for powder plate
JP2013156166A (en) * 2012-01-30 2013-08-15 Mitsubishi Heavy Ind Ltd Ultrasonic flaw detection method
CN103267801A (en) * 2013-04-22 2013-08-28 北京隆盛泰科石油管科技有限公司 Submerged-arc welding line automatic-ultrasonic detection method for oil gas conveying steel pipe manufacture
CN103543200A (en) * 2013-09-30 2014-01-29 中国航空工业集团公司北京航空材料研究院 Method for determining total focusing rule determination method before flaw detection by ultrasonic phased array probe
KR20160050615A (en) * 2014-10-30 2016-05-11 두산중공업 주식회사 Appartus and method for inspecting defect of partion connecting portion of diaphragm assembly
CN107796876A (en) * 2017-10-24 2018-03-13 武汉理工大学 A kind of ring automation multifrequency array focuses on ultrasonic no damage detection device and method
CN108982675A (en) * 2018-07-18 2018-12-11 东北轻合金有限责任公司 A kind of determination method of ultrasonic examination scanning spacing
CN110007003A (en) * 2019-04-10 2019-07-12 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) Partition method for the non-homogeneous metal thick plate welding-seam phased array supersonic detection of the velocity of sound
CN110824015A (en) * 2019-10-29 2020-02-21 中国航发北京航空材料研究院 Ultrasonic evaluation method for powder superalloy density distribution imaging
CN113075297A (en) * 2021-05-06 2021-07-06 西部超导材料科技股份有限公司 Titanium alloy phased array linear array ultrasonic detection sound field model construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
周静: "粉末合金盘类零件缺陷无损检测方法应用研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅱ辑》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118169246A (en) * 2024-05-15 2024-06-11 昆山市建设工程质量检测中心 Rapid detection method and detection system for damage of bridge inhaul cable anchoring area

Similar Documents

Publication Publication Date Title
CA2679123C (en) Calibration method of ultrasonic flaw detection and quality control method and manufacturing method of pipe body
CN104931581B (en) A kind of immersion type phased array supersonic wave detecting method of aluminum alloy pretensioning plate
CN104132998A (en) Internal microdefect detection method based on ultrasonic scanning microscope
CN110018234B (en) Method for detecting inclusions in bearing steel by using double-frequency ultrasonic waves
KR101664484B1 (en) Ultrasound inspection methods for noisy cast materials and related probes
CN108548869B (en) Nuclear power station polyethylene pipe phased array ultrasonic detection method
CN111812206A (en) Multilayer diffusion welding phased array ultrasonic detection method
CN111122702A (en) Water immersion ultrasonic detection method for internal defects of aviation bearing ring forge piece
CN111610256A (en) Method for detecting surface blind area defects of bar by using ultrasonic water immersion flaw detection system
CN106370729B (en) Ultrasonic wave water logging detection method is focused under a kind of surface
CN108802191B (en) Water immersion ultrasonic flaw detection method for rolled steel defects
KR20220004184A (en) Ultrasonic flaw detection method, ultrasonic flaw detection device, steel manufacturing equipment heat, steel manufacturing method, and steel quality assurance method
CN110824003A (en) Ultrasonic partition focusing detection method
WO2023082664A1 (en) Water immersion ultrasonic detection method and apparatus for gas turbine blade wall thickness
CN113075297A (en) Titanium alloy phased array linear array ultrasonic detection sound field model construction method
CN114019024B (en) Method and system for measuring penetration of lower layer of welding seam in lap welding
CN111380955A (en) Method for detecting defects of additive manufacturing part based on ultrasonic phased array
CN113237959A (en) Ultrasonic water immersion detection method for shaft rod forgings
CN111458415B (en) Method for detecting coupling state of ultrasonic phased array transducer and workpiece to be detected
CN109709206B (en) Method for measuring defects of R-angle structure based on ultrasonic phased array technology
RU2351925C1 (en) Method of automated nondestructive quality check of pipes and device for its realisation
CN110914682B (en) Non-destructive inspection for tubular products having complex shapes
CN107271557B (en) Steel cleanliness evaluation method based on ultrasonic scanning microscope
CN114720562A (en) Method for ultrasonically detecting internal defect equivalent of continuous casting round billet
CN113588798A (en) Real-time automatic focusing method of ultrasonic scanning microscope

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
RJ01 Rejection of invention patent application after publication

Application publication date: 20200221

RJ01 Rejection of invention patent application after publication