CN106018288A - Laser ultrasonic online nondestructive material-increase manufacturing part detection method - Google Patents
Laser ultrasonic online nondestructive material-increase manufacturing part detection method Download PDFInfo
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- CN106018288A CN106018288A CN201610436562.XA CN201610436562A CN106018288A CN 106018288 A CN106018288 A CN 106018288A CN 201610436562 A CN201610436562 A CN 201610436562A CN 106018288 A CN106018288 A CN 106018288A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/49—Scanners
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
- B22F12/43—Radiation means characterised by the type, e.g. laser or electron beam pulsed; frequency modulated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
- G01N2021/1706—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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Abstract
The invention provides a laser ultrasonic online nondestructive material-increase manufacturing part detection method and belongs to the field of nondestructive detection. The laser ultrasonic online nondestructive material-increase manufacturing part detection method utilizes the change of laser excited ultrasonic surface wave amplitude to detect metallurgical defects produced during material-increase manufacturing process, a detection device is integrated with a high-energy beam generating device of a material-increase manufacturing device to achieve synchronous part defect detection in the material-increase manufacturing process, non-detection zones brought due to complicated shapes after part manufacturing is completed are avoided, and the reliability of material-increase manufacturing parts is improved. In addition, the detection process and the manufacturing process are combined so that follow-up detection time can be omitted, and the production efficiency of the whole material-increase manufacturing part production process can be improved.
Description
Technical field
The present invention is the method that the online Non-Destructive Testing of laser-ultrasound increases that material manufactures part, belongs to field of non destructive testing.
Background technology
Increase material be manufactured as revolutionary manufacturing process, it is possible to produce tradition subtract material manufacture be difficult to even cannot
The parts with complex structures manufactured, considerably increases the motility of product design, is particularly well-suited to the fast of parts in small batch
Speed manufactures.Part gradually acquisition application on the vitals relate to Product Safety is manufactured, in it along with increasing material
The Non-Destructive Testing of portion's defect is more and more important.But, existing nondestructiving detecting means is for increasing material and manufacturing part
There is following problem: first, the part increasing material manufacture has extremely complex shape or structure more, and tradition is super
There is the problem of serious shielding during detection and be difficult to or detection process ten in the lossless detection method such as sound, ray
Divide complicated, second, compared with traditional method, the piece surface machining surplus increasing material manufacture is the least, and a lot
All there is surface blind region in lossless detection method, if Surface Machining surplus is too small, there may be part will not be processed
The region fallen cannot be detected, and brings product hidden danger, and the 3rd, conventional lossless detection method is all to manufacture part increasing material
Detecting after manufacture, the detection time is even greater than manufacturing time so that the whole technological process of production used time is more,
Therefore, conventional lossless detection means has difficulties for the detection increasing material manufacture part.
Summary of the invention
The present invention is directed to the problems referred to above and devise the method that the online Non-Destructive Testing of a kind of laser-ultrasound increases material manufacture part.
It is an object of the invention to be achieved through the following technical solutions:
(1) instrument is installed
Needed for the method, instrument includes: pulse laser, laser interferometer, the first lens, reflecting mirror, second saturating
Mirror, computer with data acquisition card, first by the laser head of pulse laser, the laser head of laser interferometer,
First lens, reflecting mirror, the second lens are arranged on mounting platform, by sync cap and the laser of pulse laser
The sync cap of interferometer coaxial cable connects, and recycling coaxial cable is by the sync cap of laser interferometer, letter
Number output interface is connected with sync cap, the signal input interface of the computer with data acquisition card respectively, will install
Stage+module manufactures on the high energy beam generating means of equipment increasing material, and the two relative position is adjustable and can one start shipment
Dynamic；
(2) light path is adjusted
Open the location laser increasing material manufacture equipment so that it is vertical irradiation manufactures on the work platforms of equipment at increasing material,
Form location spot, open laser interferometer, adjust the laser head of the laser interferometer position on mounting platform,
Make its laser vertical sent be radiated on the work platforms increasing material manufacture equipment and form light spot received, and ensure
Increasing in material manufacture process, this hot spot can fall on the path of location spot process, opens pulse laser, adjusts
Its laser head and the reflecting mirror relative position on mounting platform, the laser vertical making pulse laser send is radiated at
Increase material and manufacture on the work platforms of equipment, form excitation hot spot, and in increasing material manufacture process, excitation hot spot falls
On the path of location spot process, the first lens are arranged in the light path of pulse laser, make the first lens and arteries and veins
The beam orthogonal rushing laser instrument and the focal length that distance is the first lens of the work platforms manufacturing equipment with increasing material, will
Second lens are arranged in the light path of laser interferometer, make the second lens and laser interferometer beam orthogonal and with
Increase the focal length that distance is the second lens that material manufactures the work platforms of equipment；
(3) detection
Utilize the computer with data acquisition card to receive the ultrasonic surface wave signal that laser interferometer provides, regulate laser
The gain of interferometer, makes surface wave signal range value reach the 80% of flooding, opens increasing material manufacture equipment and proceeds by
Increase material manufacture, record a ultrasonic surface wave signal amplitude value every the 0.1-5 second in the fabrication process and take screen
Percent, increases material manufacture equipment and has often manufactured one layer, and the surface wave signal range value that this layer is collected by computer is protected
Save as a file, until whole increasing material manufacture process terminates；
(4) labelling
Check the surface wave signal range value file collected in whole increasing material manufacture process on computers, if a certain
Individual file has the continuous more than one record 20-60% less than flooding, then carries out on the layer that this document is corresponding
Labelling；
(5) imaging
Manufacture between the every twice short transverse feeding of equipment increasing material, utilize and increase the location spot that material manufacture equipment provides
Each position coordinates deducts the relative coordinate between this location spot and light spot received, forms a two-dimensional matrix,
Flooding height is defined as 256, and 0% screen height is defined as 0, and centre is divided into 256 grades, every one-level correspondence one
Individual gray value, is filled into gray value in corresponding location matrix, draws out the two dimensional gray of surface wave amplitude distribution
Figure, renders gray-scale map further with iris, it is thus achieved that the two-dimentional rainbow figure of surface wave amplitude distribution, increases
Material manufactures equipment and often completes a short transverse feeding, draws a two-dimentional rainbow figure, until completing whole increasing material system
Make.
In increasing material manufacture process, the distance between excitation hot spot and light spot received is 1 10mm, and excitation hot spot falls
On the path of location spot process.
In increasing material manufacture process, excitation hot spot and light spot received are placed in location spot path center.
The operation principle of the present invention is:
The exciting laser being radiated on material surface can encourage ultrasonic surface wave in the material, utilizes laser interferometer to examine
Surveying the surface vibration of material near exciting laser, ultrasonic surface wave can be detected, the propagation degree of depth of this waveform is about
1-2mm, and its amplitude is relevant with the material on propagation path, if there is metallurgy in the material on propagation path
Defect, the surface wave amplitude received can decline to a great extent, and exciting laser and reception laser is radiated at increasing material and manufactured
In journey on the position of just solidification forming, and manufacture the movement of position, molten bath along with increasing material and move, by detecting table
The amplitude of variation of face ripple signal, can detect in real time and increase the metallurgical imperfection produced in material manufacture process, it is achieved increase material system
Make the online Non-Destructive Testing of part.
The present invention has the advantage that and provides the benefit that:
The present invention utilizes the change-detection of Laser thermo-elastic generated surface acoustic waves amplitude to increase the metallurgical imperfection that material manufacture process produces, inspection
The high energy beam generating means surveying device and increase material manufacture equipment combines, it is achieved synchronize zero in increasing material manufacture process
Part defect detects, it is to avoid part manufacture complete after because of the complex-shaped check frequency brought, improve and increase material system
Make the reliability of part, detection process combined with manufacture process simultaneously, the follow-up detection time can be removed from,
Improve the production efficiency increasing material manufacture part all round process.
A kind of method proposing laser-ultrasound Non-Destructive Testing material texture, is conducive to the crystal grain of analysis of material on a large scale to take
To, the texture of research material, the method has the advantages such as detection range is big, speed is fast, sample requirement is low,
Detailed description of the invention
This kind of online Non-Destructive Testing of laser-ultrasound increases material and manufactures part, it is characterised in that:
(1) instrument is installed
Needed for the method, instrument includes: pulse laser, laser interferometer, the first lens, reflecting mirror, second saturating
Mirror, computer with data acquisition card, first by the laser head of pulse laser, the laser head of laser interferometer,
First lens, reflecting mirror, the second lens are arranged on mounting platform, by sync cap and the laser of pulse laser
The sync cap of interferometer coaxial cable connects, and recycling coaxial cable is by the sync cap of laser interferometer, letter
Number output interface is connected with sync cap, the signal input interface of the computer with data acquisition card respectively, will install
Stage+module manufactures on the high energy beam generating means of equipment increasing material, and the two relative position is adjustable and can one start shipment
Dynamic；
(2) light path is adjusted
Open the location laser increasing material manufacture equipment so that it is vertical irradiation manufactures on the work platforms of equipment at increasing material,
Form location spot, open laser interferometer, adjust the laser head of the laser interferometer position on mounting platform,
Make its laser vertical sent be radiated on the work platforms increasing material manufacture equipment and form light spot received, and ensure
Increasing in material manufacture process, this hot spot can fall on the path of location spot process, opens pulse laser, adjusts
Its laser head and the reflecting mirror relative position on mounting platform, the laser vertical making pulse laser send is radiated at
Increase material and manufacture on the work platforms of equipment, form excitation hot spot, and in increasing material manufacture process, excitation hot spot falls
On the path of location spot process, the first lens are arranged in the light path of pulse laser, make the first lens and arteries and veins
The beam orthogonal rushing laser instrument and the focal length that distance is the first lens of the work platforms manufacturing equipment with increasing material, will
Second lens are arranged in the light path of laser interferometer, make the second lens and laser interferometer beam orthogonal and with
Increase the focal length that distance is the second lens that material manufactures the work platforms of equipment；
(3) detection
Utilize the computer with data acquisition card to receive the ultrasonic surface wave signal that laser interferometer provides, regulate laser
The gain of interferometer, makes surface wave signal range value reach the 80% of flooding, opens increasing material manufacture equipment and proceeds by
Increase material manufacture, record a ultrasonic surface wave signal amplitude value every the 0.1-5 second in the fabrication process and take screen
Percent, increases material manufacture equipment and has often manufactured one layer, and the surface wave signal range value that this layer is collected by computer is protected
Save as a file, until whole increasing material manufacture process terminates；
(4) labelling
Check the surface wave signal range value file collected in whole increasing material manufacture process on computers, if a certain
Individual file has the continuous more than one record 20-60% less than flooding, then carries out on the layer that this document is corresponding
Labelling；
(5) imaging
Manufacture between the every twice short transverse feeding of equipment increasing material, utilize and increase the location spot that material manufacture equipment provides
Each position coordinates deducts the relative coordinate between this location spot and light spot received, forms a two-dimensional matrix,
Flooding height is defined as 256, and 0% screen height is defined as 0, and centre is divided into 256 grades, every one-level correspondence one
Individual gray value, is filled into gray value in corresponding location matrix, draws out the two dimensional gray of surface wave amplitude distribution
Figure, renders gray-scale map further with iris, it is thus achieved that the two-dimentional rainbow figure of surface wave amplitude distribution, increases
Material manufactures equipment and often completes a short transverse feeding, draws a two-dimentional rainbow figure, until completing whole increasing material system
Make.
Embodiment 1
Laser sintered formula increases manufacture GH4169 high temperature alloy part on material manufacture equipment, and its detecting step is as follows:
(1) instrument is installed
Needed for the method, instrument includes: pulse laser, laser interferometer, the first lens, reflecting mirror, second saturating
Mirror, computer with data acquisition card, first by the laser head of pulse laser, the laser head of laser interferometer,
First lens, reflecting mirror, the second lens are arranged on mounting platform, by sync cap and the laser of pulse laser
The sync cap of interferometer coaxial cable connects, and recycling coaxial cable is by the sync cap of laser interferometer, letter
Number output interface is connected with sync cap, the signal input interface of the computer with data acquisition card respectively, will install
Stage+module manufactures on the high energy beam generating means of equipment increasing material, and the two relative position is adjustable and can one start shipment
Dynamic；
(2) light path is adjusted
Open the location laser increasing material manufacture equipment so that it is vertical irradiation manufactures on the work platforms of equipment at increasing material,
Form location spot, open laser interferometer, adjust the laser head of the laser interferometer position on mounting platform,
Make its laser vertical sent be radiated on the work platforms increasing material manufacture equipment and form light spot received, and ensure
Increasing in material manufacture process, this hot spot can fall on the path of location spot process, opens pulse laser, adjusts
Its laser head and the reflecting mirror relative position on mounting platform, the laser vertical making pulse laser send is radiated at
Increase material and manufacture on the work platforms of equipment, form excitation hot spot, and in increasing material manufacture process, excitation hot spot falls
On the path of location spot process, the first lens are arranged in the light path of pulse laser, make the first lens and arteries and veins
The beam orthogonal rushing laser instrument and the focal length that distance is the first lens of the work platforms manufacturing equipment with increasing material, will
Second lens are arranged in the light path of laser interferometer, make the second lens and laser interferometer beam orthogonal and with
Increase the focal length that distance is the second lens that material manufactures the work platforms of equipment；
(3) detection
Utilize the computer with data acquisition card to receive the ultrasonic surface wave signal that laser interferometer provides, regulate laser
The gain of interferometer, makes surface wave signal range value reach the 80% of flooding, opens increasing material manufacture equipment and proceeds by
Increase material manufacture, take the hundred of screen every ultrasonic surface wave signal amplitude value of 0.5 second record in the fabrication process
Mark, increases material manufacture equipment and has often manufactured one layer, and the surface wave signal range value that this layer is collected by computer preserves
It is a file, until whole increasing material manufacture process terminates；
(4) labelling
Check the surface wave signal range value file collected in whole increasing material manufacture process, Qi Zhong on computers
Five files have continuous three records less than the 40% of flooding, be then marked on the layer 5 of part；
(5) imaging
Manufacture between the every twice short transverse feeding of equipment increasing material, utilize and increase the location spot that material manufacture equipment provides
Each position coordinates deducts the relative coordinate between this location spot and light spot received, forms a two-dimensional matrix,
Flooding height is defined as 256, and 0% screen height is defined as 0, and centre is divided into 256 grades, every one-level correspondence one
Individual gray value, is filled into gray value in corresponding location matrix, draws out the two dimensional gray of surface wave amplitude distribution
Figure, renders gray-scale map further with iris, it is thus achieved that the two-dimentional rainbow figure of surface wave amplitude distribution, increases
Material manufactures equipment and often completes a short transverse feeding, draws a two-dimentional rainbow figure, until completing whole increasing material system
Make.
Embodiment 2
Electron beam constituency is melted formula and is increased manufacture TC4 titanium alloy component on material manufacture equipment, and its detecting step is as follows:
(1) instrument is installed
Needed for the method, instrument includes: pulse laser, laser interferometer, the first lens, reflecting mirror, second saturating
Mirror, computer with data acquisition card, first by the laser head of pulse laser, the laser head of laser interferometer,
First lens, reflecting mirror, the second lens are arranged on mounting platform, by sync cap and the laser of pulse laser
The sync cap of interferometer coaxial cable connects, and recycling coaxial cable is by the sync cap of laser interferometer, letter
Number output interface is connected with sync cap, the signal input interface of the computer with data acquisition card respectively, will install
Stage+module manufactures on the high energy beam generating means of equipment increasing material, and the two relative position is adjustable and can one start shipment
Dynamic；
(2) light path is adjusted
Open the location laser increasing material manufacture equipment so that it is vertical irradiation manufactures on the work platforms of equipment at increasing material,
Form location spot, open laser interferometer, adjust the laser head of the laser interferometer position on mounting platform,
Make its laser vertical sent be radiated on the work platforms increasing material manufacture equipment and form light spot received, and ensure
Increasing in material manufacture process, this hot spot can fall on the path of location spot process, opens pulse laser, adjusts
Its laser head and the reflecting mirror relative position on mounting platform, the laser vertical making pulse laser send is radiated at
Increase material and manufacture on the work platforms of equipment, form excitation hot spot, and in increasing material manufacture process, excitation hot spot falls
On the path of location spot process, the first lens are arranged in the light path of pulse laser, make the first lens and arteries and veins
The beam orthogonal rushing laser instrument and the focal length that distance is the first lens of the work platforms manufacturing equipment with increasing material, will
Second lens are arranged in the light path of laser interferometer, make the second lens and laser interferometer beam orthogonal and with
Increase the focal length that distance is the second lens that material manufactures the work platforms of equipment；
(3) detection
Utilize the computer with data acquisition card to receive the ultrasonic surface wave signal that laser interferometer provides, regulate laser
The gain of interferometer, makes surface wave signal range value reach the 80% of flooding, opens increasing material manufacture equipment and proceeds by
Increase material manufacture, take the percentage of screen in the fabrication process every ultrasonic surface wave signal amplitude value of 1 second record
Number, increases material manufacture equipment and has often manufactured one layer, and the surface wave signal range value that this layer is collected by computer saves as
One file, until whole increasing material manufacture process terminates；
(4) labelling
Check the surface wave signal range value file collected in whole increasing material manufacture process, Qi Zhong on computers
12 files have continuous five records less than the 50% of flooding, the Floor 12 of this part are marked,
20th file has continuous four records less than the 50% of flooding, at the 20th layer of enterprising rower of this part
Note,；
(5) imaging
Manufacture between the every twice short transverse feeding of equipment increasing material, utilize and increase the location spot that material manufacture equipment provides
Each position coordinates deducts the relative coordinate between this location spot and light spot received, forms a two-dimensional matrix,
Flooding height is defined as 256, and 0% screen height is defined as 0, and centre is divided into 256 grades, every one-level correspondence one
Individual gray value, is filled into gray value in corresponding location matrix, draws out the two dimensional gray of surface wave amplitude distribution
Figure, renders gray-scale map further with iris, it is thus achieved that the two-dimentional rainbow figure of surface wave amplitude distribution, increases
Material manufactures equipment and often completes a short transverse feeding, draws a two-dimentional rainbow figure, until completing whole increasing material system
Make.
Claims (3)
1. the online Non-Destructive Testing of laser-ultrasound increases the method that material manufactures part, it is characterised in that:
(1) instrument is installed
Needed for the method, instrument includes: pulse laser, laser interferometer, the first lens, reflecting mirror, second saturating
Mirror, computer with data acquisition card, first by the laser head of pulse laser, the laser head of laser interferometer,
First lens, reflecting mirror, the second lens are arranged on mounting platform, by sync cap and the laser of pulse laser
The sync cap of interferometer coaxial cable connects, and recycling coaxial cable is by the sync cap of laser interferometer, letter
Number output interface is connected with sync cap, the signal input interface of the computer with data acquisition card respectively, will install
Stage+module manufactures on the high energy beam generating means of equipment increasing material, and the two relative position is adjustable and can one start shipment
Dynamic；
(2) light path is adjusted
Open the location laser increasing material manufacture equipment so that it is vertical irradiation manufactures on the work platforms of equipment at increasing material,
Form location spot, open laser interferometer, adjust the laser head of the laser interferometer position on mounting platform,
Make its laser vertical sent be radiated on the work platforms increasing material manufacture equipment and form light spot received, and ensure
Increasing in material manufacture process, this hot spot can fall on the path of location spot process, opens pulse laser, adjusts
Its laser head and the reflecting mirror relative position on mounting platform, the laser vertical making pulse laser send is radiated at
Increase material and manufacture on the work platforms of equipment, form excitation hot spot, and in increasing material manufacture process, excitation hot spot falls
On the path of location spot process, the first lens are arranged in the light path of pulse laser, make the first lens and arteries and veins
The beam orthogonal rushing laser instrument and the focal length that distance is the first lens of the work platforms manufacturing equipment with increasing material, will
Second lens are arranged in the light path of laser interferometer, make the second lens and laser interferometer beam orthogonal and with
Increase the focal length that distance is the second lens that material manufactures the work platforms of equipment；
(3) detection
Utilize the computer with data acquisition card to receive the ultrasonic surface wave signal that laser interferometer provides, regulate laser
The gain of interferometer, makes surface wave signal range value reach the 80% of flooding, opens increasing material manufacture equipment and proceeds by
Increase material manufacture, record a ultrasonic surface wave signal amplitude value every the 0.1-5 second in the fabrication process and take screen
Percent, increases material manufacture equipment and has often manufactured one layer, and the surface wave signal range value that this layer is collected by computer is protected
Save as a file, until whole increasing material manufacture process terminates；
(4) labelling
Check the surface wave signal range value file collected in whole increasing material manufacture process on computers, if a certain
Individual file has the continuous more than one record 20-60% less than flooding, then carries out on the layer that this document is corresponding
Labelling；
(5) imaging
Manufacture between the every twice short transverse feeding of equipment increasing material, utilize and increase the location spot that material manufacture equipment provides
Each position coordinates deducts the relative coordinate between this location spot and light spot received, forms a two-dimensional matrix,
Flooding height is defined as 256, and 0% screen height is defined as 0, and centre is divided into 256 grades, every one-level correspondence one
Individual gray value, is filled into gray value in corresponding location matrix, draws out the two dimensional gray of surface wave amplitude distribution
Figure, renders gray-scale map further with iris, it is thus achieved that the two-dimentional rainbow figure of surface wave amplitude distribution, increases
Material manufactures equipment and often completes a short transverse feeding, draws a two-dimentional rainbow figure, until completing whole increasing material system
Make.
The online Non-Destructive Testing of laser-ultrasound the most according to claim 1 increases the method that material manufactures part, its feature
Being: in increasing material manufacture process, the distance between excitation hot spot and light spot received is 1 10mm, and excitation hot spot falls
On the path of location spot process.
The online Non-Destructive Testing of laser-ultrasound the most according to claim 1 increases the method that material manufactures part, its feature
Being: in increasing material manufacture process, excitation hot spot and light spot received are placed in location spot path center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436562.XA CN106018288B (en) | 2016-06-17 | 2016-06-17 | The method of the online non-destructive testing increasing material manufacturing part of laser-ultrasound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610436562.XA CN106018288B (en) | 2016-06-17 | 2016-06-17 | The method of the online non-destructive testing increasing material manufacturing part of laser-ultrasound |
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| Publication Number | Publication Date |
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| CN106018288A true CN106018288A (en) | 2016-10-12 |
| CN106018288B CN106018288B (en) | 2019-01-11 |
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| CN201610436562.XA Active CN106018288B (en) | 2016-06-17 | 2016-06-17 | The method of the online non-destructive testing increasing material manufacturing part of laser-ultrasound |
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| CN108333219A (en) * | 2018-03-19 | 2018-07-27 | 长沙理工大学 | A kind of online lossless detection method for band large-scale metal component laser gain material manufacturing process |
| CN108444921A (en) * | 2018-03-19 | 2018-08-24 | 长沙理工大学 | A kind of increasing material manufacturing component online test method based on signal correlation analysis |
| CN108602123A (en) * | 2016-01-28 | 2018-09-28 | 西门子股份公司 | Method and apparatus for checking the component for wanting increasing material manufacturing |
| CN109187755A (en) * | 2018-09-12 | 2019-01-11 | 西安交通大学 | A kind of online supersonic damage-free detection method based on 3D printing |
| CN109269439A (en) * | 2018-09-28 | 2019-01-25 | 东南大学 | Metal bath profile in-situ measurement equipment and method |
| CN109269986A (en) * | 2018-09-28 | 2019-01-25 | 东南大学 | Phased-array laser ultrasonic testing system |
| CN109387568A (en) * | 2018-12-21 | 2019-02-26 | 西安增材制造国家研究院有限公司 | A kind of laser ultrasonic detection device and increasing material manufacturing, detection integrated equipment |
| CN109459432A (en) * | 2018-10-24 | 2019-03-12 | 上海交通大学 | A kind of sclerous tissues' increasing material manufacturing processability high throughput evaluation method |
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| CN110732773A (en) * | 2018-07-18 | 2020-01-31 | 大连交通大学 | Laser welding system containing ultrasonic online detection device and laser welding method |
| CN110954542A (en) * | 2019-12-11 | 2020-04-03 | 深圳先进技术研究院 | Defect detection device, defect detection system and defect detection method for additive manufacturing |
| CN111148588A (en) * | 2017-10-06 | 2020-05-12 | 株式会社Ihi | Three-dimensional layered structure manufacturing device and three-dimensional layered structure manufacturing method |
| CN112098526A (en) * | 2020-07-23 | 2020-12-18 | 西安交通大学 | Near-surface defect feature extraction method for additive product based on laser ultrasonic technology |
| CN112404457A (en) * | 2020-10-30 | 2021-02-26 | 武汉大学深圳研究院 | Dissimilar metal additive manufacturing interface quality regulation feedback system and method |
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