CN217786990U - Electromagnetic thermal imaging detection device for R area of metal component manufactured by additive manufacturing - Google Patents
Electromagnetic thermal imaging detection device for R area of metal component manufactured by additive manufacturing Download PDFInfo
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- CN217786990U CN217786990U CN202221799061.5U CN202221799061U CN217786990U CN 217786990 U CN217786990 U CN 217786990U CN 202221799061 U CN202221799061 U CN 202221799061U CN 217786990 U CN217786990 U CN 217786990U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 19
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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
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Abstract
The utility model discloses an electromagnetic thermal imaging detection device for the R region of a metal component manufactured by additive manufacturing, which comprises an excitation coil, an L-shaped double magnetic yoke, a displacement sensor, a thermal infrared imager and a monitoring computer; the exciting coils are wound on the two L-shaped magnetic yokes of the L-shaped double magnetic yoke in the same direction, and the number of winding turns and the wire diameter of the exciting coils on the two L-shaped magnetic yokes are the same; the two L-shaped magnetic yokes are respectively arranged at positions close to the two side wall plate surfaces of the component R area but not in contact with the two side wall plate surfaces, and are respectively parallel to the two side wall plates of the component R area; the displacement sensor is fixed on one side of one L-shaped magnetic yoke in the moving direction; the thermal infrared imager is arranged above the opposite angle of the R area of the component, and the shooting direction of the thermal infrared imager is over against the detection surface of the R area of the component in the area surrounded by the L-shaped double magnetic yokes. The utility model discloses a temperature distribution information detection surface and nearly surface defect that arouse at component R district surface course can give position, orientation, distribution and the shape information of defect on component R district surface directly perceivedly.
Description
Technical Field
The utility model belongs to the technical field of nondestructive test, concretely relates to vibration material disk metal component R district electromagnetism thermal imaging detection device.
Background
The R transition zone (i.e., corner zone) of an aircraft structure is commonly found in structures such as stiffened panels, stiffened frames, i-beams, corner boxes or joints, etc., and the R zone is a structural member stress concentration zone which is very prone to defects during manufacturing and service use. In aircraft structure castings, forgings, machined parts and additive manufacturing metal components, the R regions are structural part weak regions. In particular, in the additive manufacturing of metal components, metallurgical defects such as pores, non-fusion and cracks are easily generated in the R region of the component due to various unstable and discontinuous factors in rapid heating melting and cooling solidification in the forming process. The defects reduce the mechanical property of the metal component manufactured by the additive manufacturing and seriously affect the use safety of the metal component. In order to guarantee safe use of the metal component for the additive manufacturing of the airplane structure, it is necessary to adopt a reliable nondestructive testing technology to detect the defects existing in the R area in time. Because the R area of the metal component is a cambered surface and the space size is small, great difficulty is brought to the conventional nondestructive testing technology.
At present, the conventional ultrasonic detection for the R region of a component has the problems of a detection blind area, difficulty in vertical incidence of an ultrasonic beam to a detection surface of the R region, incapability of realizing full coverage detection of the whole R region and the like, and the conventional eddy current detection for the R region of the component has the problems of low detection efficiency, large lifting effect influence of an eddy current detection probe and the like. The prior art has defects in the aspect of actual requirements of comprehensive, reliable and high-precision defect detection of the R area of the metal component. In order to effectively improve the defect detection efficiency and detection accuracy of the R region of the component and visually give information such as the position, size, orientation, distribution, geometric morphology and the like of the surface defects of the R region of the component, it is urgently needed to develop a novel visual imaging nondestructive detection device for the R region of the metal component manufactured by the additive manufacturing method.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide a vibration material disk metal component R district electromagnetic thermal imaging detection device.
In order to realize the technical purpose, the utility model discloses the technical scheme who takes does:
an electromagnetic thermal imaging detection device for an R area of an additive manufacturing metal component comprises an excitation coil, an L-shaped double magnetic yoke, a displacement sensor, a thermal infrared imager and a monitoring computer;
the excitation coils are wound on the two L-shaped magnetic yokes of the L-shaped double magnetic yoke in the same direction, and the number of winding turns and the wire diameter of the excitation coils on the two L-shaped magnetic yokes are the same;
two L-shaped magnetic yokes of the L-shaped double magnetic yokes are respectively placed at positions close to but not in contact with the two side wall plate surfaces of the component R area, and are respectively parallel to the two side wall plates of the component R area;
the L-shaped double magnetic yoke is coupled with the surface layer of the R region of the component through an electromagnetic field;
the displacement sensor is fixed on one side of one L-shaped magnetic yoke of the L-shaped double magnetic yokes in the moving direction and synchronously moves with the L-shaped double magnetic yokes;
the output end of the displacement sensor is electrically connected with the input end of the monitoring computer;
the thermal infrared imager is arranged above the opposite angle of the R region of the component, and the shooting direction of the thermal infrared imager is over against the detection surface of the R region of the component in the region surrounded by the L-shaped double magnetic yokes;
and the output end of the thermal infrared imager is electrically connected with the input end of the monitoring computer.
Preferably, the L-shaped double yoke is composed of two L-shaped yokes of the same material, shape and size, wherein the L-shaped magnetic field is composed of a magnetic conductive material rod and L-shaped magnetic conductive material brackets connected to two ends of the magnetic conductive material rod, and the L-shaped magnetic conductive material brackets are used for supporting the magnetic conductive material rod.
Preferably, the excitation coil is excited by external short-time pulse.
Preferably, the displacement sensor is used for detecting the distance between the L-shaped double yokes and the motion starting point, and two L-shaped yokes of the L-shaped double yokes are at the same distance from the displacement sensor in the moving direction.
The utility model discloses following beneficial effect has:
adopt the utility model discloses an behind the hot formation of image detection device of vibration material disk metal component R district electromagnetism, through many physical fields of electromagnetism heat the temperature distribution information detection surface and the nearly surface defect that arouse at component R district surface course, compare prior art, can improve component R district defect detection efficiency and detection precision, component R district cambered surface has been solved, camber and the influence of effect are carried away from to the probe, can realize that the quick high resolution of component R district non-contact formation of image is swept and is looked into, the detection image that obtains can give the defect position on component R district surface directly perceivedly, orientation, distribution and shape information, and show with visual thermal image form.
The utility model is suitable for an include but not only be limited to the gas pocket on additive manufacturing metal component R district top layer, not fuse, crackle and inclusion defect detection, be applicable to the internal surface and the surface top layer defect detection in different camber component R districts. The utility model discloses still be applicable to traditional manufacturing process metal component or other conducting material and include but not only be limited to the surface and the nearly surface defect detection of panel, rod, tubular product and other complicated shape face component of foundry goods, forging, machine processing piece or welding spare.
Drawings
Fig. 1 is a schematic system composition diagram of an embodiment of the electromagnetic thermal imaging detection apparatus for R region of an additive manufactured metal component according to the present invention.
Fig. 2 is the utility model relates to a vibration material disk metal component R district electromagnetic thermal imaging detection device's detection principle schematic diagram.
Fig. 3 is a schematic diagram of a detection result of the electromagnetic thermal imaging detection apparatus for R region of the metal component manufactured by additive manufacturing according to the present invention.
In the figure: 1. an exciting coil; 2. an L-shaped double magnetic yoke; 3. a displacement sensor; 4. a thermal infrared imager; 5. monitoring a computer; 6. a member R region; 7. a discontinuous location; 8. magnetic lines of force; 9. an eddy current; 10. temperature distribution information.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, an electromagnetic thermal imaging detection device for an R region of an additive manufacturing metal component comprises an excitation coil 1, an L-shaped double magnetic yoke 2, a displacement sensor 3, a thermal infrared imager 4 and a monitoring computer 5;
the exciting coil 1 is wound on the two L-shaped magnetic yokes of the L-shaped double magnetic yoke 2 in the same direction, and the number of winding turns and the wire diameter of the exciting coil 1 on the two L-shaped magnetic yokes are the same;
two L-shaped magnetic yokes of the L-shaped double magnetic yoke 2 are respectively arranged at positions close to but not in contact with the two side wall plate surfaces of the component R area 6, and are respectively parallel to the two side wall plates of the component R area 6; so that two sides of a connecting line of two L-shaped magnetic yoke magnetic poles of the L-shaped double magnetic yoke 2 cover the detection surface of the component R area 6, and meanwhile, the L-shaped double magnetic yoke 2 and the detection surface of the component R area 6 form a plurality of closed-loop magnetic field loops;
the L-shaped double yoke 2 is coupled with the component R region 6 through an electromagnetic field;
the displacement sensor 3 is fixed on one side of one L-shaped magnetic yoke of the L-shaped double magnetic yokes 2 in the moving direction and moves synchronously with the L-shaped double magnetic yokes 2;
the output end of the displacement sensor 3 is electrically connected with the input end of the monitoring computer 5;
the thermal infrared imager 4 is arranged above the diagonal of the component R area 6, and the shooting direction of the thermal infrared imager 4 is over against the detection surface of the component R area 6 in the area surrounded by the L-shaped double magnetic yokes 2;
the output end of the thermal infrared imager 4 is electrically connected with the input end of the monitoring computer 5.
In specific implementation, the L-shaped double yoke 2 is composed of two L-shaped yokes made of the same material, shape and size, wherein the L-shaped yoke is composed of a magnetic conductive material rod and L-shaped magnetic conductive material brackets connected to two ends of the magnetic conductive material rod, and the L-shaped magnetic conductive material brackets are used for supporting the magnetic conductive material rod.
In specific implementation, the exciting coil 1 is connected with external short-time pulse excitation.
In specific implementation, the displacement sensor 3 is configured to detect a distance from the L-shaped double yoke 2 to a motion start point, and two L-shaped yokes of the L-shaped double yoke 2 have the same distance from the displacement sensor 3 in a moving direction.
The utility model discloses when the actual application, the flow is as follows:
s1: the exciting coil 1 is connected with a short-time pulse excitation, the short-time pulse excitation generates a short-time pulse current on the exciting coil 1, the short-time pulse current flows in the exciting coil 1 to generate a transient exciting magnetic field, the L-shaped double magnetic yoke 2 is close to the component and transmits the transient exciting magnetic field to the surface layer of the R area 6 of the component, the transient exciting magnetic field generates an eddy current on the surface layer of the R area 6 of the component through electromagnetic induction, the eddy current induces temperature distribution information on the surface layer of the R area 6 of the component based on joule heat effect, the thermal infrared imager 4 converts the temperature distribution information 10 into a visual thermal image detection signal, and the visual thermal image detection signal is transmitted to the monitoring computer 5 through the thermal infrared imager 4;
s2: the displacement sensor 3 transmits the spatial position parameters of the detection surface of the R region 6 of the component to the monitoring computer 5 in real time;
s3: the monitoring computer 5 draws an electromagnetic thermal imaging detection scanning map of the component R region 6 according to the received visible thermal image detection signal and the spatial position parameter of the detection surface of the component R region 6;
s4: and the monitoring computer 5 displays the drawn electromagnetic thermal imaging detection scanning map of the component R region 6 on a monitoring display screen in real time.
The detection principle is as follows:
assuming that there is a discontinuity 7 in the surface of the component R region 6 of the additively manufactured metal component;
referring to fig. 2, which is a schematic diagram of the detection principle of the present apparatus, a flow direction of a transient excitation magnetic field magnetic line 8 transmitted to a surface layer of a component R region 6 through an L-shaped double yoke 2 is parallel to a radial direction of the component R region 6, a flow direction of an eddy current 9 generated by electromagnetic induction of the transient excitation magnetic field magnetic line 8 on the surface layer of the component R region 6 is orthogonal to the magnetic line 8, a flow direction of an induced eddy current 9 is orthogonal to the radial direction of the component R region 6, when a discontinuity 7 appears on the surface layer of the component R region 6, the discontinuity 7 obstructs and changes the flow direction and distribution of the induced eddy current 9, and the induced eddy current 9 causes temperature distribution information 10 near the discontinuity 7 on the surface layer of the component R region 6.
Referring to fig. 3, the temperature distribution information 10 caused in the vicinity of the discontinuity 7 in the surface layer of the R region 6 of the component can reflect the position, orientation, distribution and shape information of the discontinuity 7 due to the interaction of the electromagnetic thermophysical field with the discontinuity 7.
When the surface layer of the R region 6 of the component is discontinuous 7, the visual thermal image detection signal detected by the device is different from the visual thermal image detection signal detected when the surface layer of the R region 6 of the component is not discontinuous 7, the difference is synchronously displayed in the electromagnetic thermal image detection scanning image of the R region of the component drawn by the monitoring computer 5, and the monitoring computer 5 simultaneously outputs an alarm; the monitoring computer 5 intercepts and stores the visible thermal image detection signals and the spatial position parameters of the detection surface of the R region 6 of the time component at the same time, so that the detection personnel can observe and evaluate the signals.
The utility model discloses a vibration material disk metal component R district electromagnetism thermal imaging detection device, through many physical fields of electromagnetism heat at the temperature distribution information detection surface that component R district surface course arouses and nearly surface defect, compare prior art, can improve component R district defect detection efficiency and detection precision, the cambered surface of component R district has been solved, camber and the influence of probe lift-off effect, can realize that component R district non-contact high resolution imaging sweeps and examines, the detection image that obtains can give the position of defect on component R district surface directly perceivedly, orientation, distribution and shape information, and show with visual thermal image form.
The utility model is suitable for an include but not only be limited to the gas pocket on additive manufacturing metal component R district top layer, not fuse, crackle and inclusion defect detection, be applicable to the internal surface and the surface top layer defect detection in different camber component R districts. The utility model discloses still be applicable to traditional manufacturing process metal component or other conducting material and include but not only be limited to the surface and the nearly surface defect detection of panel, rod, tubular product and other complicated shape face component of foundry goods, forging, machine processing piece or welding spare.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. The utility model provides an increase material manufacturing metal component R district electromagnetic thermal imaging detection device which characterized in that: the device comprises an exciting coil (1), an L-shaped double-magnetic yoke (2), a displacement sensor (3), a thermal infrared imager (4) and a monitoring computer (5);
the excitation coil (1) is wound on two L-shaped magnetic yokes of the L-shaped double-magnetic yoke (2) in the same direction, and the number of winding turns and the wire diameter of the excitation coil (1) on the two L-shaped magnetic yokes are the same;
two L-shaped magnetic yokes of the L-shaped double-magnetic yoke (2) are respectively placed at positions close to the two side wall plate surfaces of the component R area (6) but not in contact with the two side wall plate surfaces, and are respectively parallel to the two side wall plates of the component R area (6);
the L-shaped double magnetic yoke (2) is coupled with the surface layer of the R region (6) of the component through an electromagnetic field;
the displacement sensor (3) is fixed on one side of one L-shaped magnetic yoke of the L-shaped double magnetic yokes (2) in the moving direction and moves synchronously with the L-shaped double magnetic yokes (2);
the output end of the displacement sensor (3) is electrically connected with the input end of the monitoring computer (5);
the thermal infrared imager (4) is arranged above the diagonal of the component R area (6), and the shooting direction of the thermal infrared imager (4) is over against the detection surface of the component R area (6) in the area surrounded by the L-shaped double magnetic yokes (2);
the output end of the thermal infrared imager (4) is electrically connected with the input end of the monitoring computer (5).
2. The electromagnetic thermal imaging detection device for the R area of the additive manufactured metal component as claimed in claim 1, wherein: the L-shaped double-magnetic yoke (2) is composed of two L-shaped magnetic yokes which are made of the same materials, shapes and sizes, wherein the L-shaped magnetic yokes are composed of a magnetic conducting material rod and L-shaped magnetic conducting material supports connected to the two ends of the magnetic conducting material rod, and the L-shaped magnetic conducting material supports are used for supporting the magnetic conducting material rod.
3. The electromagnetic thermal imaging detection device for the R area of the additive manufactured metal component as claimed in claim 1, wherein: the exciting coil (1) is connected with external short-time pulse excitation.
4. The electromagnetic thermal imaging detection device for the R area of the additive manufactured metal component as claimed in claim 1, wherein: the displacement sensor (3) is used for detecting the distance between the L-shaped double magnetic yoke (2) and the motion starting point, and the distance between the two L-shaped magnetic yokes of the L-shaped double magnetic yoke (2) and the displacement sensor (3) is the same in the moving direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221799061.5U CN217786990U (en) | 2022-07-13 | 2022-07-13 | Electromagnetic thermal imaging detection device for R area of metal component manufactured by additive manufacturing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221799061.5U CN217786990U (en) | 2022-07-13 | 2022-07-13 | Electromagnetic thermal imaging detection device for R area of metal component manufactured by additive manufacturing |
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| CN217786990U true CN217786990U (en) | 2022-11-11 |
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| CN202221799061.5U Active CN217786990U (en) | 2022-07-13 | 2022-07-13 | Electromagnetic thermal imaging detection device for R area of metal component manufactured by additive manufacturing |
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- 2022-07-13 CN CN202221799061.5U patent/CN217786990U/en active Active
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