CN109374741A - Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method - Google Patents
Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method Download PDFInfo
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- CN109374741A CN109374741A CN201811156735.8A CN201811156735A CN109374741A CN 109374741 A CN109374741 A CN 109374741A CN 201811156735 A CN201811156735 A CN 201811156735A CN 109374741 A CN109374741 A CN 109374741A
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- Prior art keywords
- test specimen
- scanning
- hollow cylinder
- ultrasonic
- cylinder test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/0681—Imaging by acoustic microscopy, e.g. scanning acoustic microscopy
-
- 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
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/0672—Imaging by acoustic tomography
-
- 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
- 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
- G01N2291/26—Scanned objects
- G01N2291/262—Linear objects
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- 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 discloses hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection methods, hollow cylinder test specimen is mounted on water logging rotating scanning device first, then test specimen is allowed to rotate a default step angle ultrasonic water immersion scanning probe primary, until test specimen rotates a circle, tomography finally is carried out to test specimen, the detection of hollow cylinder test specimen axial flaw can be completed, the method can show the indiscoverable some defects of convention scanning scheme, detect more comprehensive.This method can solve this problem.The hollow cylinder test specimen for carrying out laying flat scanning originally is allowed to rotate along its axle center, probe shuttle-scanning above test specimen, imaging results, which are equivalent to, has been launched into a rectangle original hollow cylinder test specimen, can give comprehensive detection to internal defect.
Description
Technical field
The present invention relates to a kind of hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection methods, are suitable for ultrasonic scanning
Microscope detection and ultrasonic C-scanning detection field.
Background technique
Ultrasonic scanning is a kind of nondestructiving detecting means for detecting material internal defect, it has high resolution, testing result
Intuitively, the advantages that detection efficiency is high.Since certain test specimen manufacturing process are perfect not enough, occurs hole inside test specimen so will lead to
Hole crackle, is mingled with, the defects of compound particles are unevenly distributed, and weakens the mechanical property of material, reduces the use of structure
Performance, or even serious consequence is caused, therefore available supersonic testing method carries out quality control.
Ultrasonic C Scanning Image principle is the reflection echo by extracting ultrasonic wave, is generated on the x-y two-dimensional surface of test specimen
Sectional view at where defect.Ultrasonic probe launches the ultrasonic wave of certain frequency, when wave travels to the interface of two media
When, reflection can occur for some wave and remaining wave can then transmit.It encounters surface of test piece and reflects and received by energy converter
Wave be called surface echo, the wave transmitted down encounters the wave that defect and test specimen bottom surface back reflection are returned and is called flaw echo respectively
And Bottom echo.As soon as every movement point of popping one's head in, has an A sweep signal.Extract surface echo and bottom surface in A sweep signal
Maximum amplitude between echo, corresponding grey scale value generate grayscale image.A sweep signal graph all in plane is combined,
The C-scan image of institute's plane of scanning motion can finally be obtained.
Ultrasonic scanning be all it is static by test specimen and pop one's head in it is mobile in a manner of be scanned, this is possible to can be because of underbead crack
The direction of growth it is parallel with ultrasonic beam direction and be ignored.Hollow cylinder test specimen axial flaw ultrasound proposed by the present invention
C-scan detection method can solve this problem.The hollow cylinder test specimen for carrying out laying flat scanning originally is allowed to rotate along its axle center,
Probe above test specimen shuttle-scanning, imaging results be equivalent to original hollow cylinder test specimen be launched into one it is rectangular
Shape can give comprehensive detection to internal defect.
Summary of the invention
The object of the present invention is to provide a kind of hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection methods, show biography
The system indiscoverable some defects of scan method, keep detection more comprehensive.
The technical solution adopted by the present invention is water logging rotating scanning device, and the device is by sink 1, fixture nut 2, motor 3
It forms, test specimen 4 is mounted in rotary shaft 5 by fixture nut 2, and sink 1 is filled into water and makes 4 quilt of test specimen with rotary shaft 5
It floods completely.
Computer control motor 3 starts to rotate with a default step angle, and the output shaft of motor 3 is connect with rotary shaft 5；
Ultrasonic water immersion, which is popped one's head in, is mounted on the outer surface of test specimen 4, ultrasonic water immersion pop one's head in the overcentre in test specimen 4 along rotary shaft 5 axial direction
Shuttle-scanning.Ultrasonic water immersion scanning probe is primary, and test specimen 4 rotates a step angle, after test specimen 4 rotates a circle, scanning knot
Beam.
The interception of outer ring signal to interior ring signal is carried out to the A sweep waveform of all scanning elements of ultrasonic water immersion probe.Root
According to chromatography spacing segmentation interception A sweep signal, each layer of Amplitude maxima is found out, and record data.
By amplitude corresponding grey scale color, finally it is integrated into C-scan image, that is, can observe the internal flaw of test specimen 4.
Test specimen 4 is hollow cylinder.
Hollow cylinder test specimen is mounted on water logging rotating scanning device by the present invention first, and test specimen is then allowed to rotate one
Default step angle ultrasonic water immersion scanning probe is primary, until test specimen rotates a circle, finally carries out tomography to test specimen
The detection of hollow cylinder test specimen axial flaw is completed, the method can show the indiscoverable some defects of convention scanning scheme,
It detects more comprehensive.
Detailed description of the invention
Fig. 1 water logging rotating scanning device schematic diagram.
The A sweep waveform and interception schematic diagram that Fig. 2 ultrasonic scanning obtains.
Specific embodiment
Detailed description of the preferred embodiments below:
As shown in Figure 1, water logging rotating scanning device is made of sink 1, fixture nut 2, motor 3 and rotary shaft 5, by test specimen
4 are mounted in rotary shaft 5 by fixture nut 2, and sink 1 are filled water, test specimen 4 is flooded completely.
Computer control motor 3 starts to rotate with a default step angle, and the output shaft of motor 3 is connect with rotary shaft 5；
Ultrasonic water immersion probe is mounted on the scanning support of the top of test specimen 4, and ultrasonic water immersion pops one's head in the overcentre in test specimen 4 along rotary shaft 5
Axial reciprocating scanning.Ultrasonic water immersion scanning probe is primary, and test specimen 4 rotates a step angle, after test specimen 4 rotates a circle,
The end of scan.
As shown in Fig. 2, carrying out outer ring signal to interior ring signal to the A sweep waveform of all scanning elements of ultrasonic water immersion probe
Interception.According to chromatography spacing segmentation interception A sweep signal, each layer of Amplitude maxima is found out, and record data.
By amplitude corresponding grey scale color, the case where being finally integrated into C-scan image, that is, can observe test specimen internal flaw.
Test specimen 4 is hollow cylinder.
Claims (2)
1. water logging rotating scanning device, it is characterised in that: the device is by sink (1), fixture nut (2), motor (3) and rotary shaft
(5) it forms, test specimen (4) is mounted on rotary shaft (5) by fixture nut (2), and sink (1) is filled into water and makes test specimen
(4) it is flooded completely；
Computer control motor (3) starts to rotate with a default step angle, and the output shaft of motor (3) and rotary shaft (5) are even
It connects；Ultrasonic water immersion probe is mounted on the scanning support above test specimen (4), and ultrasonic water immersion is popped one's head on the overcentre edge of test specimen (4)
The axial reciprocating of rotary shaft (5) scans；Ultrasonic water immersion scanning probe is primary, and test specimen (4) rotates a step angle, in test specimen
(4) after rotating a circle, the end of scan；
The interception of outer ring signal to interior ring signal is carried out to the A sweep waveform of all scanning elements of ultrasonic water immersion probe；According to layer
Spacing segmentation interception A sweep signal is analysed, finds out each layer of Amplitude maxima, and record data；
By amplitude corresponding grey scale color, finally it is integrated into C-scan image, that is, can observe the internal flaw of test specimen (4).
2. water logging rotating scanning device according to claim 1, it is characterised in that: test specimen (4) is hollow cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156735.8A CN109374741A (en) | 2018-09-30 | 2018-09-30 | Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156735.8A CN109374741A (en) | 2018-09-30 | 2018-09-30 | Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109374741A true CN109374741A (en) | 2019-02-22 |
Family
ID=65402713
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156735.8A Pending CN109374741A (en) | 2018-09-30 | 2018-09-30 | Hollow cylinder test specimen axial flaw Ultrasonic C-Scan detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650282A (en) * | 2020-06-03 | 2020-09-11 | 航天特种材料及工艺技术研究所 | Ultrasonic C-scan detection method and device for triangular tube made of fiber wound composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401814A (en) * | 2011-08-25 | 2012-04-04 | 浙江大学 | Method for scanning ultrasonic microscope to image by means of multi-layer scanning simultaneously |
| CN102914592A (en) * | 2012-10-31 | 2013-02-06 | 安泰科技股份有限公司 | Ultrasonic detection imaging method of diffusion welding connecting interface in tubular compound piece |
| CN103018331A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Frequency domain imaging method of ultrasonic scanning microscope |
| CN202870041U (en) * | 2011-11-28 | 2013-04-10 | 广东电网公司电力科学研究院 | Ultrasound C/A scanning imaging device for small diameter tubes |
-
2018
- 2018-09-30 CN CN201811156735.8A patent/CN109374741A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401814A (en) * | 2011-08-25 | 2012-04-04 | 浙江大学 | Method for scanning ultrasonic microscope to image by means of multi-layer scanning simultaneously |
| CN103018331A (en) * | 2011-09-22 | 2013-04-03 | 北京理工大学 | Frequency domain imaging method of ultrasonic scanning microscope |
| CN202870041U (en) * | 2011-11-28 | 2013-04-10 | 广东电网公司电力科学研究院 | Ultrasound C/A scanning imaging device for small diameter tubes |
| CN102914592A (en) * | 2012-10-31 | 2013-02-06 | 安泰科技股份有限公司 | Ultrasonic detection imaging method of diffusion welding connecting interface in tubular compound piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650282A (en) * | 2020-06-03 | 2020-09-11 | 航天特种材料及工艺技术研究所 | Ultrasonic C-scan detection method and device for triangular tube made of fiber wound composite material |
| CN111650282B (en) * | 2020-06-03 | 2023-05-12 | 航天特种材料及工艺技术研究所 | Ultrasonic C-scanning detection method and device for triangular tube made of fiber wound composite material |
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Application publication date: 20190222 |
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