CN203216857U - Infrared detection device for metal defects - Google Patents
Infrared detection device for metal defects Download PDFInfo
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- CN203216857U CN203216857U CN 201320057681 CN201320057681U CN203216857U CN 203216857 U CN203216857 U CN 203216857U CN 201320057681 CN201320057681 CN 201320057681 CN 201320057681 U CN201320057681 U CN 201320057681U CN 203216857 U CN203216857 U CN 203216857U
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Abstract
The utility model discloses an infrared detection device for metal defects. The infrared detection device comprises an exciting device, an infrared thermal imager and a computer, wherein the exciting device is connected with a detection coil; the infrared thermal imager is connected with the computer; a lens of the infrared thermal imager is arranged above the detection coil. The infrared detection device for the metal defects provided by the utility model can achieve rapid, visual and non-contact detection, is free of pollution, and suitable for outfield and online detection in service, and can detect and monitor developmental defects of fatigue damages such as cracks and corrosion on a solid surface and a subsurface, and one-time observation area is large.
Description
Technical field
The utility model relates to technical field of nondestructive testing, relates in particular to a kind of metal defect infrared detecting device.
Background technology
At present, aircraft and high-speed railway are the main modes of medium and long distance communications and transportation in the world wide, and the safety of these two kinds of modes of transportation is paid close attention to by countries in the world always.In civil aviaton's maintenance, can effectively find the development of early defect and defective, can guarantee its seaworthiness; In rail detects, can find the early defect of rail, carry out early warning, can avoid the steel pipe fracture and the traffic hazard that causes.
The zone of material unaccounted-for (MUF) generally all has characteristics such as hidden, that the border is complicated, flatness is lower on the aircraft, as the long purlin keel that spread all over fuselage are extensive use of riveted joint, splicing or spot welding etc. with faying face between the covering and forever are connected, if the composition surface is not disassembled, rely on visual examination and at present traditional NDT means (eddy current, ultrasonic etc.) can't detect the defective in the overlapping the slot, have only when development of defects just may be found during to the order of severity.And aircraft engine hollow blade integrity detects, than blade outer surface, the harm of blade interior defective is even more serious, and conventional lossless detection method (ultrasonic, eddy current) detection effect is undesirable, maybe needs parts are disassembled (infiltration, endoscope).Therefore, press for a kind of lossless detection method rapidly and efficiently that need not to decompose, quantitatively detect hidden defective.
At present both at home and abroad lossless detection method commonly used mainly contains ultrasonic, ray, magnetic, infiltration, eddy current etc., but all there is certain weak point in these detection methods, for example, Ultrasonic Detection, generally need to use couplant, and only be applicable to the detection to material internal defect, relatively more difficult to the detection of material surface defective; Electromagnetic detection, not strong to the resolution characteristic of fine crack because Magnetic Sensor resolution is not enough, therefore do not have the effect of early warning yet; General infrared thermal imaging detects because the excitation degree of depth is difficult to control, can not produce a desired effect.
Summary of the invention
The technical problems to be solved in the utility model is, need disassemble parts at conventional Non-Destructive Testing in the prior art, need to use couplant, resolution characteristic to fine crack is not strong, the detection effect is undesirable, and general infrared thermal imaging detects and also exists the excitation degree of depth to be difficult to above-mentioned defectives such as control, provides a kind of quick, intuitively, noncontact, pollution-free, once observe area big, be applicable to the outfield, online in the labour detection, and the metal defect infrared detecting device that can detect and monitor the developing fault of fatigue damages such as solid surface and inferior surface crack and corrosion.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of metal defect infrared detecting device comprises exciting bank, infrared thermography and computing machine; Be connected with magnetic test coil on the exciting bank, infrared thermography links to each other with computing machine, and the camera lens of infrared thermography is positioned at the magnetic test coil top.
The course of work of metal defect infrared detecting device described in the utility model is:
Step 1: according to the shape of test specimen, but select for use the metal thin tube of water flowing cooling to make the magnetic test coil on contact test specimen surface, and add for fixing nut at the magnetic test coil interface;
Step 2: according to the material of test specimen, set excitation frequency and the actuation duration of exciting bank, and magnetic test coil is fixed on the exciting bank, tighten and guarantee can not leak in the testing process;
Step 3: fixing infrared thermography, adjust the position of infrared thermography camera lens, allow it aim at the detection position of test specimen, adjust focal length, set initial temperature, then infrared thermography is linked to each other with computing machine, open video acquisition software;
Step 4: start exciting bank and detect, and the video that computing machine collects is analyzed, realize the purpose that detects by analysis test specimen temperature variations around the defective in heating and heat radiation process.
When magnetic test coil is passed through in the pulse excitation of being sent by exciting bank, the inner eddy current that produces of test specimen, for making the change of eddy current, the surface temperature of test specimen can change, the temperature variation minimum resolution is 0.04k, thus can realize fast by analyzing test specimen temperature variation around the defective in heating and heat radiation process, intuitively, the purpose of non-contact detecting.
Metal defect infrared detecting device described in the utility model comprises exciting bank, infrared thermography and computing machine, it combines many-sided technology such as infrared imaging, modulated excitation, acquisition of signal and processing, have fast, directly perceived, noncontact, once observe advantages such as area is big, be applicable to the outfield, onlinely detect in labour.Compare with detections such as ultrasonic, infiltrations, infrared detection is non-contact detecting, and is pollution-free; Compare with ray, infrared detection can large tracts of land detect, it is " green " detection technique of a kind of safety non-pollution, can finish the conventional incompetent detection task of Dynamic Non-Destruction Measurement of tradition, be applicable to aspects such as aircraft compound substance, slab construction, quality of covering riveting detection, can also the developing fault of fatigue damages such as solid surface and inferior surface crack and corrosion be detected.
As a kind of improvement to technical scheme described in the utility model, infrared thermography links to each other with computing machine by data line.
As a kind of improvement to technical scheme described in the utility model, infrared thermography is oprtisPI450 type infrared thermography.The high pixel of oprtisPI450 type infrared thermography 382 * 288 is surveyed the identification that can realize tiny flaw on the one hand, its frame frequency up to 80Hz can be avoided losing of quick figure effectively, and the heat sensitivity of its 0.04K can be observed the temperature variation in test specimen heating and the whole process of dispelling the heat well simultaneously; On the other hand, the design of oprtisPI450 type infrared thermography is small and exquisite, and the detection that especially is fit to complex environment is used.
As a kind of improvement to technical scheme described in the utility model, magnetic test coil links to each other with the handle of exciting bank.
As a kind of improvement to technical scheme described in the utility model, exciting bank is HB-X5KS type ultrahigh frequency exciting bank.The oscillation frequency of HB-X5KS type ultrahigh frequency exciting bank is about 1MHz, and Maximum Power Output is 5KW, and this exciting bank can also be realized different output powers according to the difference of test specimen, and output power can be adjustable in 10%-100% scope.
As a kind of improvement to technical scheme described in the utility model, magnetic test coil is copper coil.
In addition, in the technical scheme described in the utility model, all being not specifically noted all can reach the purpose that realizes the technical program by adopting the routine techniques in this area.
Therefore, the beneficial effects of the utility model have provided a kind of metal defect infrared detecting device, this pick-up unit can be realized fast, directly perceived, non-contact detection, pollution-free, once observe area big, be applicable to outfield, online in the labour detection, can also the developing fault of fatigue damages such as solid surface and inferior surface crack and corrosion be detected and monitor.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the utility model metal defect infrared detecting device;
Now that the label declaration in the accompanying drawing is as follows: 1 is exciting bank, and 2 is infrared thermography, and 3 is computing machine, and 4 is magnetic test coil, and 5 is handle, and 6 is data line.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
The utility model preferred embodiment is as follows:
As shown in Figure 1, a kind of metal defect infrared detecting device, comprise exciting bank 1, infrared thermography 2, computing machine 3 and magnetic test coil 4, wherein, magnetic test coil 4 links to each other with exciting bank 1 by handle 5, infrared thermography 2 is connected with computing machine 3 by data line 6, and the camera lens of infrared thermography 2 is positioned at the top of magnetic test coil 4.
In the present embodiment, exciting bank 1 adopts HB-X5KS type ultrahigh frequency exciting bank, and infrared thermography 2 adopts oprtisPI450 type infrared thermography, and magnetic test coil 4 is copper coil.
During use, at first according to the shape of test specimen, but select for use the copper tubule of water flowing cooling to make magnetic test coil 4, and establish a nut at the interface of magnetic test coil 4, be used for fixed test coil 4; Secondly, material according to test specimen, set excitation frequency and the actuation duration of HB-X5KS type ultrahigh frequency exciting bank, excitation frequency generally is set at 3kHz-20kHz, actuation duration is made as 1s-10s, and magnetic test coil 4 is fixed on the handle 5 of exciting bank 1, tighten and guarantee can not leak in the testing process; Again, fixing optrisPI450 type infrared thermography, and with the detection position of its alignment lens test specimen, adjust focal length, the setting initial temperature is room temperature, and by data line 6 infrared thermography 2 is connected to computing machine 3, opens video acquisition software; At last, start exciting bank 1, detect, and the video that computing machine 3 collects is analyzed.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (6)
1. a metal defect infrared detecting device is characterized in that, comprises exciting bank (1), infrared thermography (2) and computing machine (3); Be connected with magnetic test coil (4) on the described exciting bank (1), described infrared thermography (2) links to each other with computing machine (3), and the camera lens of infrared thermography (2) is positioned at magnetic test coil (4) top.
2. metal defect infrared detecting device according to claim 1 is characterized in that, described infrared thermography (2) links to each other with computing machine (3) by data line (6).
3. metal defect infrared detecting device according to claim 1 and 2 is characterized in that, described infrared thermography (2) is oprtisPI450 type infrared thermography.
4. metal defect infrared detecting device according to claim 1 is characterized in that, described magnetic test coil (4) links to each other with the handle (5) of exciting bank (1).
5. according to the metal defect infrared detecting device of claim 1 or 4, it is characterized in that described exciting bank (1) is HB-X5KS type ultrahigh frequency exciting bank.
6. according to the metal defect infrared detecting device of claim 1 or 4, it is characterized in that described magnetic test coil (4) is copper coil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320057681 CN203216857U (en) | 2013-02-01 | 2013-02-01 | Infrared detection device for metal defects |
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| CN 201320057681 CN203216857U (en) | 2013-02-01 | 2013-02-01 | Infrared detection device for metal defects |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007071A (en) * | 2014-06-05 | 2014-08-27 | 常州艾瑞特电子有限公司 | Infrared metal detector |
| CN104677943A (en) * | 2015-03-12 | 2015-06-03 | 重庆交通大学 | Method for detecting corrosion degree of steel bars inside concrete based on infrared thermal imaging |
| CN106290452A (en) * | 2016-08-25 | 2017-01-04 | 青岛励赫化工科技有限公司 | Conductive adhesive tape successional detection device in a kind of detection tire |
| CN106996944A (en) * | 2017-05-25 | 2017-08-01 | 电子科技大学 | A kind of subsurface defect Shape Reconstruction method in thermal imaging detection |
| CN107064217A (en) * | 2016-12-05 | 2017-08-18 | 南京航空航天大学 | Integrated impulse eddy current induced thermal imaging detection means and its detection method |
| CN108226223A (en) * | 2017-12-25 | 2018-06-29 | 山西戴德测控技术有限公司 | One kind is based on infrared thermal imaging steel wire rope on-line measuring device |
| CN109254012A (en) * | 2018-10-09 | 2019-01-22 | 中北大学 | A kind of cracks of metal surface detection device and method based on semiconductor laser |
| CN113447527A (en) * | 2021-06-11 | 2021-09-28 | 西安交通大学 | Dual-mode laser infrared thermal imaging detection system and method |
| CN116630306A (en) * | 2023-07-19 | 2023-08-22 | 成都信息工程大学 | Defect detection method and device for aircraft semi-circular head rivet |
-
2013
- 2013-02-01 CN CN 201320057681 patent/CN203216857U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007071A (en) * | 2014-06-05 | 2014-08-27 | 常州艾瑞特电子有限公司 | Infrared metal detector |
| CN104677943B (en) * | 2015-03-12 | 2017-05-17 | 重庆交通大学 | Method for detecting corrosion degree of steel bars inside concrete based on infrared thermal imaging |
| CN104677943A (en) * | 2015-03-12 | 2015-06-03 | 重庆交通大学 | Method for detecting corrosion degree of steel bars inside concrete based on infrared thermal imaging |
| CN106290452B (en) * | 2016-08-25 | 2019-04-09 | 青岛励赫化工科技有限公司 | The successional detection device of conductive adhesive tape in a kind of detection tire |
| CN106290452A (en) * | 2016-08-25 | 2017-01-04 | 青岛励赫化工科技有限公司 | Conductive adhesive tape successional detection device in a kind of detection tire |
| CN107064217A (en) * | 2016-12-05 | 2017-08-18 | 南京航空航天大学 | Integrated impulse eddy current induced thermal imaging detection means and its detection method |
| CN106996944A (en) * | 2017-05-25 | 2017-08-01 | 电子科技大学 | A kind of subsurface defect Shape Reconstruction method in thermal imaging detection |
| CN106996944B (en) * | 2017-05-25 | 2019-04-05 | 电子科技大学 | A kind of subsurface defect Shape Reconstruction method in thermal imaging detection |
| CN108226223A (en) * | 2017-12-25 | 2018-06-29 | 山西戴德测控技术有限公司 | One kind is based on infrared thermal imaging steel wire rope on-line measuring device |
| CN109254012A (en) * | 2018-10-09 | 2019-01-22 | 中北大学 | A kind of cracks of metal surface detection device and method based on semiconductor laser |
| CN113447527A (en) * | 2021-06-11 | 2021-09-28 | 西安交通大学 | Dual-mode laser infrared thermal imaging detection system and method |
| CN113447527B (en) * | 2021-06-11 | 2022-10-25 | 西安交通大学 | Dual-mode laser infrared thermal imaging detection system and method |
| CN116630306A (en) * | 2023-07-19 | 2023-08-22 | 成都信息工程大学 | Defect detection method and device for aircraft semi-circular head rivet |
| CN116630306B (en) * | 2023-07-19 | 2023-10-20 | 成都信息工程大学 | Defect detection method and device for aircraft semi-circular head rivet |
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Granted publication date: 20130925 Termination date: 20140201 |