CN202066833U - Comprehensive measurement device of fatigue damage based on magnetic memory technology - Google Patents
Comprehensive measurement device of fatigue damage based on magnetic memory technology Download PDFInfo
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- CN202066833U CN202066833U CN201120060334XU CN201120060334U CN202066833U CN 202066833 U CN202066833 U CN 202066833U CN 201120060334X U CN201120060334X U CN 201120060334XU CN 201120060334 U CN201120060334 U CN 201120060334U CN 202066833 U CN202066833 U CN 202066833U
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Abstract
The utility model relates to a comprehensive measurement device of fatigue damage based on magnetic memory technology, which mainly solves the problem that the existing device for measuring material fatigue damage is incapable of realizing comprehensive measurement. The device is characterized in that the device further comprises a magnetic memory measuring module and an on-site microscopy video imaging module; the magnetic memory measuring module comprises a magnetic memory sensor, a voltage-stabilizing denoising amplifying circuit and a multichannel A/D (Analog-Digital) conversion and signal collecting card; the on-site microscopy video imaging module comprises an on-site metallographic microscope, a CCD (Charge Coupled Device) image sensor and an image signal processor, and an image signal generated by the on-site metallographic microscope is input to a video imaging signal input end of a PC (Personal Computer) machine after being processed by the CCD image sensor and the image signal processor in sequence; and the PC machine is built-in for processing a computer program of a magnetic memory measuring signal and a video imaging signal. The device has a comprehensive and accurate measurement result, high flexibility and small volume, and is convenient for on-site measurement in practical engineering.
Description
Technical field
The utility model relates to the pick-up unit of using in a kind of Non-Destructive Testing field, specifically, relates to a kind of device that fatigue damage of materials is carried out comprehensive detection based on the magnetic memory technique.
Background technology
Ferrimagnets such as iron and steel are important materials commonly used in the national economy every profession and trade, but because hardware produces various defectives in long-time running, make it much smaller than the yield limit of material and strength degree and there is not burst fracture under the situation of obvious plastic yield, cause whole equipment to face the serious threat of inefficacy, fracture, blast, especially the key areas that Aero-Space, railway, bridge, electric power, petrochemical industry etc. are involved the interests of the state and the people will cause catastrophic consequence.How to estimate defect of metallic member effectively, and further find serious stress concentration district and microdefect timely and accurately, avoid the state of affairs further to worsen and the generation of catastrophic failure, always be a difficult problem that perplexs people.Traditional lossless detection method, though as ultrasonic, magnetic, infiltration, eddy current, ray widespread use, but be confined to detect oneself gross imperfection through forming, can not find and predict early defect and position thereof, can't solve the problem of the sudden destruction of equipment, need clear up and some pre-service the checked object surface, not consider the variation of metal material microstructure.The metal magnetic memory technology that last century end has just risen, based on magnetostrictive effect and the magnetostrictive effect mechanism of ferromagnetic material under the pulsating stress effect, the stress distribution of zero member can distribute by its Surface field and reflect and keep " memory ", distribute by detecting Surface field, counter stress is concentrated, initial failure and gross imperfection carry out scene detection.Compare with traditional lossless detection method, not only can detect ferromagnetic material plastic yield and macroscopic cracking, more can effectively detect the hazardous location that the early stage stress of ferromagnetic material is concentrated, the most outstanding advantage is that tested surface is not needed to do special cleaning, comparing with Magnetic Flux Leakage Inspecting does not need source of magnetization magnetization measured workpiece, only utilize ferromagnetic material at terrestrial magnetic field environment spontaneous magnetization signal, can be more natural and comprehensive for diagnostic information, detecting the processing of need not demagnetizing of back workpiece, is more promising green Dynamic Non-Destruction Measurement of 21 century.Because the magnetic memory technique is an emerging Dynamic Non-Destruction Measurement, domestic the formulation unified examination criteria aspect detection by quantitative at present, and inevitable site environment magnetic field is to the electromagnetic pollution problem of workpiece, cause magnetic to remember the mistake of on-the-spot testing result, we can say also there is not at present a kind of device that can fine head it off.
Summary of the invention
In order to solve the problems of the prior art that background technology proposes, the utility model provides a kind of fatigue damage comprehensive detection device based on the magnetic memory technique, this kind device testing result is comprehensive, accurate, highly sensitive, and volume is little, is convenient to on-the-spot detection the in the actual engineering.
The technical solution of the utility model is: this kind comprises PC and a magnetic memory detection module and an on-the-spot microscopy video image-forming module based on the fatigue damage comprehensive detection device of magnetic memory technique; Described magnetic memory detection module is made of magnetic memory sensor, voltage stabilizing denoising amplifying circuit and hyperchannel A/D conversion and data acquisition card, input to the signal input part of hyperchannel A/D conversion and data acquisition card after the signal of described magnetic memory sensor output is handled through voltage stabilizing denoising amplifying circuit, the output terminal of described hyperchannel A/D conversion and data acquisition card is connected with the magnetic memory detecting signal input end of described PC; Described on-the-spot microscopy video image-forming module is made of on-the-spot metaloscope, ccd image sensor and image-signal processor, is input to the video imaging signal input part of described PC after the picture signal that is generated by described on-the-spot metaloscope is handled successively through described ccd image sensor and image-signal processor; The built-in computer program that is used to handle aforementioned magnetic memory detecting signal and video imaging signal of described PC.
During concrete enforcement, described magnetic memory sensor adopts the SS495 Hall element; Described hyperchannel A/D conversion and data acquisition card adopt the AD12-16UEH cake core; Described on-the-spot metaloscope adopts the on-the-spot metaloscope of USFEN500 type; Described image-signal processor adopts DIG1302U type image signal transaction card.
The utlity model has following beneficial effect: owing to take such scheme, this kind device can utilize the magnetic memory to detect fast, need not do the characteristics of special processing to measured surface, locate ferromagnetic piece fatigue damage point and area of stress concentration fast, can utilize simultaneously the microscopy video imaging technique to detect the ferromagnetic material microstructure changes, reach with micro-image is directly on-the-spot and get rid of because the magnetic memory flase drop problem that electromagnetic pollution causes, can obtain the both macro and micro integrated information of fatigue damage again, both corroborate each other, testing result more comprehensively, more accurate, reliability is higher, this device sensitivity height, volume is little, is convenient to on-the-spot detection the in the actual engineering.
Description of drawings
Fig. 1 is a composition synoptic diagram of the present utility model.
Fig. 2 is the electrical schematic diagram of voltage stabilizing denoising amplifying circuit in the utility model.
8-Voltage stabilizing module among the figure, 9-denoising module, 10-amplification module.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this kind comprises a PC based on the fatigue damage comprehensive detection device of magnetic memory technique, and in addition, described pick-up unit also comprises a magnetic memory detection module and an on-the-spot microscopy video image-forming module; Described magnetic memory detection module is made of magnetic memory sensor, voltage stabilizing denoising amplifying circuit and hyperchannel A/D conversion and data acquisition card, input to the signal input part of hyperchannel A/D conversion and data acquisition card after the signal of described magnetic memory sensor output is handled through voltage stabilizing denoising amplifying circuit, the output terminal of described hyperchannel A/D conversion and data acquisition card is connected with the magnetic memory detecting signal input end of described PC; Described on-the-spot microscopy video image-forming module is made of on-the-spot metaloscope, ccd image sensor and image-signal processor, is input to the video imaging signal input part of described PC after the picture signal that is generated by described on-the-spot metaloscope is handled successively through described ccd image sensor and image-signal processor; The built-in computer program that is used to handle aforementioned magnetic memory detecting signal and video imaging signal of described PC.
During concrete enforcement, preferred version is: described magnetic memory sensor adopts the SS495 Hall element; Described hyperchannel A/D conversion and data acquisition card adopt the AD12-16UEH cake core; Described on-the-spot metaloscope adopts the on-the-spot metaloscope of USFEN500 type; Described image-signal processor adopts DIG1302U type image signal transaction card.
Provide specific embodiment below:
Fig. 2 is the electrical schematic diagram of voltage stabilizing denoising amplifying circuit.As shown in the figure, the magnetic memory sensor adopts the SS495 Hall element, and sensitivity is 3.125mV/G, can determine magnetic memory sensor number according to the actual detected needs, and the number of this device magnetic memory sensor can reach 16 at most.Voltage stabilizing denoising amplification module, purpose is in order to remove the noise that the sensor offset voltage brings, adopt high-precision voltage reference LM336 to add the high precision subtracter that low drifting operating amplifier op27 forms, cut the noise that offset voltage brings, guarantee that the voltage of supply sensor is stable.Since signal amplitude change maximum have only tens millivolts very a little less than, adopt two-stage amplifier, weak magnetic signal is amplified.The signal relative error of each passage is very big during at multichannel collecting, adopts multiturn potentiometer to add amplifier, the normalized that returns to zero relatively.Hyperchannel A/D changes capture card, and model is AD12-16UEH, can realize A/D conversion totally 16 passages of 12, and supply voltage is-5～+ 5V, the buffer memory of built-in 256K links to each other with the expansion slot of PC by 37 needle interfaces.Metaloscope is selected the on-the-spot metaloscope of model USFEN500, maximum object distance 200mm, and enlargement factor has third gear: 100 times, 125 times and 400 times.What is called is meant Charge Coupled Device for ccd image sensor, is made by the semiconductor material of ISO, can be transformed into electric charge to light.For the needs of the satisfied micron of gold conjugate phase microscope, submicron order measuring accuracy, adopt 1/2 inch simulation of 1024 * 768 arrays CCD, each pixel size is 0.0032 * 0.0032mm2, resolution can reach below the 0.24 μ m.Image signal processing unit adopts DIG1302U type image signal transaction card, realizes the A/D conversion and the Computer Storage of picture signal.
In this programme, the progress of work of magnetic memory detection module is to collect magnetic memory signal from measured workpiece by magnetic memory sensor single or a group, by voltage stabilizing denoising amplifying circuit signal is carried out denoising, eliminate the voltage drift of magnetic memory sensor, A/D converter is a digital signal with analog signal conversion on the AD12-16UEH card again, stores on the PC and shows.And the progress of work of microscopy video image-forming module is to be collected the picture signal of microstructure by different enlargement factors by on-the-spot metaloscope, light signal is converted to charge signal and transfers to DIG1302U picture signal transaction card by ccd image sensor, simulating signal is converted into digital signal, is stored into PC and demonstrates micro-image.
This kind of fatigue damage comprehensive detection device based on the magnetic memory technique, through evidence, need not do the characteristics of special processing to measured surface, locate ferromagnetic piece fatigue damage point and area of stress concentration fast, utilizing the microscopy video imaging technique to detect the ferromagnetic material microstructure simultaneously changes, both can on-the-spotly get rid of because the magnetic memory flase drop problem that electromagnetic pollution causes, can obtain the both macro and micro integrated information of fatigue damage again, save more time and human input than other detection modes, testing result more comprehensively, and is more accurate, reliability is higher, this device sensitivity height, volume is little, is convenient to on-the-spot detection the in the actual engineering.
Claims (2)
1. the fatigue damage comprehensive detection device based on the magnetic memory technique comprises PC, it is characterized in that: described pick-up unit also comprises a magnetic memory detection module and an on-the-spot microscopy video image-forming module; Described magnetic memory detection module is made of magnetic memory sensor, voltage stabilizing denoising amplifying circuit and hyperchannel A/D conversion and data acquisition card, input to the signal input part of hyperchannel A/D conversion and data acquisition card after the signal of described magnetic memory sensor output is handled through voltage stabilizing denoising amplifying circuit, the output terminal of described hyperchannel A/D conversion and data acquisition card is connected with the magnetic memory detecting signal input end of described PC; Described on-the-spot microscopy video image-forming module is made of on-the-spot metaloscope, ccd image sensor and image-signal processor, is input to the video imaging signal input part of described PC after the picture signal that is generated by described on-the-spot metaloscope is handled successively through described ccd image sensor and image-signal processor.
2. a kind of fatigue damage comprehensive detection device based on the magnetic memory technique according to claim 1 is characterized in that: described magnetic memory sensor adopts the SS495 Hall element; Described hyperchannel A/D conversion and data acquisition card adopt the AD12-16UEH cake core; Described on-the-spot metaloscope adopts the on-the-spot metaloscope of USFEN500 type; Described image-signal processor adopts DIG1302U type image signal transaction card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120060334XU CN202066833U (en) | 2011-03-10 | 2011-03-10 | Comprehensive measurement device of fatigue damage based on magnetic memory technology |
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| CN201120060334XU CN202066833U (en) | 2011-03-10 | 2011-03-10 | Comprehensive measurement device of fatigue damage based on magnetic memory technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634860A (en) * | 2015-02-10 | 2015-05-20 | 重庆交通大学 | Device and method for monitoring steel bar yield state in reinforced concrete bridge structure |
| CN106546659A (en) * | 2016-10-27 | 2017-03-29 | 中海石油(中国)有限公司 | A kind of erosion damage on-line detecting system and method based on Magnetic Memory |
| CN106769396A (en) * | 2017-02-08 | 2017-05-31 | 中国地质大学（武汉） | A kind of horizontal directional drill drilling rod fatigue damage detecting system |
-
2011
- 2011-03-10 CN CN201120060334XU patent/CN202066833U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104634860A (en) * | 2015-02-10 | 2015-05-20 | 重庆交通大学 | Device and method for monitoring steel bar yield state in reinforced concrete bridge structure |
| CN104634860B (en) * | 2015-02-10 | 2017-10-03 | 重庆交通大学 | Reinforcement yielding state monitoring apparatus and method inside concrete bridge construction |
| CN106546659A (en) * | 2016-10-27 | 2017-03-29 | 中海石油(中国)有限公司 | A kind of erosion damage on-line detecting system and method based on Magnetic Memory |
| CN106769396A (en) * | 2017-02-08 | 2017-05-31 | 中国地质大学（武汉） | A kind of horizontal directional drill drilling rod fatigue damage detecting system |
| CN106769396B (en) * | 2017-02-08 | 2019-03-01 | 中国地质大学（武汉） | A kind of horizontal directional drill drilling rod fatigue damage detection system |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20130310 |