CN109556774A - The non-destructive monitoring system and monitoring method of residual stress in ferromagnetic steel - Google Patents
The non-destructive monitoring system and monitoring method of residual stress in ferromagnetic steel Download PDFInfo
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- CN109556774A CN109556774A CN201811315878.9A CN201811315878A CN109556774A CN 109556774 A CN109556774 A CN 109556774A CN 201811315878 A CN201811315878 A CN 201811315878A CN 109556774 A CN109556774 A CN 109556774A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0047—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to residual stresses
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Abstract
The invention discloses a kind of non-destructive monitoring systems of residual stress in ferromagnetic steel, including mechanical arm, monitoring probe, and signal receives and data processing module, computer A and the computer B for controlling the mechanical arm movement.The distal end of mechanical arm is provided with the pneumatic clamp for clamping monitoring probe, signal receives and data processing module is electrically connected by circuit and monitoring probe and computer A, signal receives and data processing module receives and convert the monitoring information of monitoring probe, and monitoring information is transmitted on computer A and is shown.In the case that monitoring system disclosed by the invention can influence production line running in the case where not destroying steel to be measured and not, complete the surface of ferromagnetic steel and the monitoring of internal residual stress distribution, other techniques can be cooperated to complete reparation and control to the stress level of steel simultaneously, it is fast to monitor system speed, precision is high, can greatly improve the appearance speed of qualified products.
Description
Technical field
This application involves residual stress field of non destructive testing, more particularly to one kind for monitoring ferromagnetic steel surface and inside
Residual stress tensor distribution non-destructive monitoring system and monitoring method.
Background technique
The presence of residual stress can seriously affect the intensity and correlated performance of workpiece, the research pair to the monitoring of residual stress
There is critically important influence in some fields, if heat treatment process field, surface treatment are strengthened, manufacturing industry, have important theory
Meaning and engineering application value.,
Residual stress detection technique is widely used in product surveillance field.Side applied to the detection of residual stress at present
Method is divided into laboratory technique and industrial technology.Wherein, laboratory technique includes that X-ray diffraction method (is thrown using X-ray diffraction detection
Penetrate the local stress composition (i.e. surface stress) in region), neutron diffraction method (changes according to the crystal interplanar distance of material internal to ask
It must strain, and residual stress is calculated according to elastic mechanics equation).Both laboratory techniques need a large amount of infrastructure and when
Between, and can be only done the measurement to single-point region parameter, therefore time-consuming, it is at high cost.Industrial technology includes strain-ga(u)ge transducer
Technology (strain value of single-point or several points is collected by the data of conductive film, using residual stress is calculated),
Hole drill method (is sticked strain gauge at the tested position of steel to be measured, is drawn by the small blind hole for making a call to Φ 2mm or so at strain gauge center
Rise residual stress release obtain related data) and barkhausen noise detection method (based on the Bark in ferromagnetic steel magnetic history
The gloomy jump of person of outstanding talent, the two-dimentional tensor of the surface tension of monitoring and test steel surface, and by motion sensor come the space of monitor stress
Distribution).The disadvantages of industrial technology has and can destroy sample to be tested, and error is big, can only carry out measurement.
As it can be seen that whether laboratory technique or industrial technology, detection speed all relatively slowly, are especially detecting internal stress
When distribution.And with industrial continuous intensification and expand, the continuous improvement that performance detection is pursued, industrialization detection means is got over
Timeliness is more pursued, existing detection means cannot meet the requirements.
Summary of the invention
Deficiency existing for above-mentioned prior art is solved in order at least part of, the present invention provides remaining in a kind of ferromagnetic steel
The non-destructive monitoring system and monitoring method of stress, ferromagnetic residual stress of steel monitoring system and method for the invention is to utilize magnetic force pair
This characteristic of the variation of residual stress, the system and device be monitored to the residual stress distribution of measuring object and method.
According to an aspect of the present invention, a kind of non-destructive monitoring system of residual stress in ferromagnetic steel is provided, which is characterized in that packet
Include mechanical arm, monitoring probe, signal reception and data processing module, computer A and for controlling the mechanical arm movement
Computer B,
Wherein, the distal end of the mechanical arm is provided with the pneumatic clamp for clamping the monitoring probe, the letter
Number receive and data processing module be electrically connected by circuit and the monitoring probe and the computer A, the signal connects
It receives and data processing module receives and convert the monitoring information of the monitoring probe, and the monitoring information is transmitted to the meter
It is shown on calculation machine A,
The monitoring probe includes magnetic field generator and pressure sensor, and the magnetic field generator includes permanent magnet and soft magnetism
Stick, close to ferromagnetic steel to be measured, the pressure sensor is placed in the permanent magnet and the soft magnetism stick on the bottom edge of the permanent magnet
It is intermediate.
In some embodiments, the non-destructive monitoring system may include the monitoring probe.
In some embodiments, the non-destructive monitoring system may also include arranged for interval in the foot of the monitoring probe
Ultrasonic sensor, temperature sensor and displacement sensor.
In some embodiments, the non-destructive monitoring system may include multiple monitoring probes, multiple prisons
Probing head is at array arrangement.
In some embodiments, the non-destructive monitoring system may include multiple monitoring probes, multiple prisons
Probing head parallel arrangement.
In some embodiments, the non-destructive monitoring system may also include arranged for interval in multiple monitoring probes
Ultrasonic sensor, temperature sensor and the displacement sensor in bottom middle position.
In some embodiments, the pressure sensor may include the insulating layer stacked gradually from top to bottom, upper metal
Conductor layer, the polymeric powder composite layer of semiconductor, lower metal conductor layer and passivation layer, wherein the insulating layer is located at described
The top of pressure sensor is directly contacted with the soft magnetism stick.
In some embodiments, the magnetic field generator may include a NdFeB permanent magnet and a soft magnetism stick, side
To along the direction S-N.In some embodiments, the section of the soft magnetism stick can be cylindrical or rectangle.
According to another aspect of the present invention, provide it is a kind of using above system carry out ferromagnetic steel in residual stress it is lossless
Monitoring method includes the following steps:
S01: ferromagnetic steel testpieces to be measured is processed in the production line, carries out corresponding heat treatment process；
S02: the monitoring of residual stress level is carried out to the testpieces using above system；
S03: judging the monitoring result in step S02, if residual stress level is up to standard, which can pass through inspection
Test direct factory；If residual stress level is excessively high, which is sent to stress and repairs work area, for the remnants monitored
The excessively high region of stress carries out heat treatment and stress reparation again；
S04: repeating step S02 and S03, until the residual stress level of the testpieces monitored is up to standard.
In some embodiments, step S02 specifically:
Monitoring probe is clamped, so that monitoring probe is carried out position correction and is moved along ferromagnetic steel to be measured, completes monitoring probe pair
The mobile monitoring of ferromagnetic steel, obtains monitoring data；
Obtained monitoring data are transferred to signal reception by integrated circuit and data processing module, the signal connect
It receives and data processing module stays alone the data sheet of pressure sensor after managing amplification conversion, same to ultrasonic sensor, displacement sensing
Device and the data of temperature sensor acquisition pass through integrated circuit together and are transferred to computer A；
It after all data of computer A real-time collecting, is shown by display, the data of pressure sensor monitoring pass through
Lebview real-time software is shown as the curve of cyclical fluctuations with monitoring probe change in displacement on the display of computer A, passes through analysis
The fluctuation situation of curve judges the residual stress distribution condition of ferromagnetic steel to be measured.
Beneficial effects of the present invention:
Monitoring system disclosed by the invention can influence the feelings of production line running in the case where not destroying steel to be measured and not
Under condition, the surface of ferromagnetic steel and the monitoring of internal residual stress distribution are completed, while other techniques can be cooperated to complete to steel
The reparation and control of stress level, monitoring system speed is fast, and precision is high, can greatly improve the appearance speed of qualified products.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
It needs attached drawing to be used to be briefly described, for those skilled in the art, can also be obtained according to these attached drawings
Other attached drawings.
Fig. 1 is the schematic perspective view of the non-destructive monitoring system of residual stress in ferromagnetic steel of the invention.
Fig. 2 is the planar structure signal of the non-destructive monitoring system including a monitoring probe of one embodiment of the invention
Figure, wherein being not shown, mechanical arm, signal receives and data processing module, computer A and computer B.
Fig. 3 is the planar junction signal of the non-destructive monitoring system including multiple monitoring probes of another embodiment of the present invention
Figure, wherein being not shown, mechanical arm, signal receives and data processing module, computer A and computer B.
Fig. 4 is the planar structure signal of the non-destructive monitoring system including multiple monitoring probes of another embodiment of the present invention
Figure, wherein being not shown, mechanical arm, signal receives and data processing module, computer A and computer B.
Fig. 5 is the output relation of monitoring probe shift length and stress level of the invention.
Fig. 6 is the method flow diagram for stress level needed for eliminating or adjusting in production line.
Specific embodiment
Clear, complete description is carried out to the application below in conjunction with specific embodiment, it is clear that described embodiment is only
Only as illustration, it is not intended to limit the application.
It is well known that engineering part can generate micro-crack due to tired, deformation, and then lead to showing for stress concentration occur
As wherein the metal component with magnetic conductivity will appear in stress concentration portion position, magnetic permeability reduces, the magnetic flux leakage of workpiece surface increases
Big phenomenon.According to the counter magnetostriction effect of ferrimagnet, i.e., the variation of ferromagnetic material magnetized state is along with material ruler
The phenomenon that very little variation, otherwise such as material internal region since stress is that tissue has deformation, the magnetic conductivity of material just has phase
The variation answered.It therefore can be by the Distribution of Magnetic Field situation on detection part surface come the residual stress distribution of monitoring component indirectly.
Non-destructive monitoring system of the invention is exactly using magnetic force to this characteristic of the variation of residual stress, to object to be measured
The system that is monitored of residual stress distribution.Specifically, the residual stress of object to be measured makes its magnetic conductivity change, from
And variation of the permanent magnet to its gravitation is influenced, cause permanent magnet to generate corresponding variation to the pressure of pressure sensor, utilizes this
The pressure sensor of invention from research and development can incude this pressure change, pressure change can cause the deformation of pressure sensor film into
And sensor impedance is caused to change, cause the variation of current value in circuit, data are transferred on computer via signaling module, root
It is shown as real-time curve according to the signal that Labview software (or similar data acquisition imaging software) can will receive, in conjunction with
The fluctuating change of curve image can quickly judge the region that stress is concentrated in object to be measured.It is above-mentioned by residual stress to
The conversion process of current value curve are as follows: F → Δ σ → Δ μ → Δ R → Δ I.Material can introduce power in processing or welding process,
External force F, which acts on material, can cause the stress level of material internal regional area to be accumulated, and stress variation Δ σ is due to converse magnetostriction
It can cause the magnetic conductivity changes delta mu in same region, magnetic conductivity variation acts on permanent magnet, and permanent magnet becomes the pressure of pressure sensor
Change, film deformation self-resistance R changes in pressure sensor, and then output electric current I is made to change, and is collected software note
Record is got off.The conductivity of depth δ and material are wherein detected, intrinsic permeability is related with probe displacement speed.Wherein, depth is monitored
The velocity of displacement of the conductivity of δ and the material of object to be measured, intrinsic permeability and monitoring probe etc. is related.The present invention is with specific
Speed and track mobile monitoring probe material be scanned can be detected curve, occur can quantifying by detecting
Obtain the stress level distribution situation of material.Such as the feelings of the quality of manufactured product can be checked in the production line of factory
It is used under condition, but not limited to this.It should be appreciated that the object to be measured of non-destructive monitoring system of the invention can be following institute
The ferromagnetic steel of description, is also possible to other ferromagnetic materials.
Fig. 1 is the schematic perspective view of the non-destructive monitoring system of residual stress in ferromagnetic steel of the invention, such as Fig. 1 institute
Show, non-destructive monitoring system includes: mechanical arm 1, and monitoring probe 2, signal receives and data processing module (not shown), computer
A (not shown) and computer B (not shown).
Computer B is connect by circuit with mechanical arm 1, is controlled the motor program of mechanical arm 1, is made it along to be measured ferromagnetic
The surface of steel is mobile with fixed speed and fixed-direction.The distal end of mechanical arm 1 is provided with pneumatic clamp, can be used for clamping
Monitoring probe 2 makes monitoring probe 2 carry out position correction and the moving operation along ferromagnetic steel to be measured, and then it is right to complete monitoring probe 2
The mobile monitoring of ferromagnetic steel.Signal receives and data processing module is electrically connected by circuit with monitoring probe 2 and computer A respectively
It connects, signal receives and data processing module receives and convert the monitoring information of monitoring probe 2, and the monitoring information is transmitted to meter
It is shown on calculation machine A.
In an embodiment as illustrated in figure 2, non-destructive monitoring system includes a monitoring probe 2, wherein monitoring probe 2 is wrapped
Include magnetic field generator 21, pressure sensor 22.Wherein, magnetic field generator 21 is the main part of monitoring probe 2 comprising permanent magnetism
Iron 211 and soft magnetism stick 212, the bottom edge of permanent magnet 211 is close to ferromagnetic steel to be measured, mainly for generation of magnetic induction line, soft magnetism stick 212 by
Permanent magnet magnetization conducts downwards.Pressure sensor 22 is equipped among permanent magnet 211 and soft magnetism stick 212.In actual monitoring, permanent magnetism
Body 211 is influenced to change to the power of soft magnetism stick 212 by ferromagnetic steel to be measured, and the variation of this power is connect by intermediate pressure sensor 22
It receives.The size of permanent magnet 211 and soft magnetism stick 212 be it is corresponding, size according to actual monitoring needs can synchronize tune
Whole and variation, to adapt to the size of ferromagnetic steel to be measured.
Magnetic field generator 21 is made of a NdFeB permanent magnet 211 and a soft magnetism stick 212, direction along the direction S-N,
Middle soft magnetism stick 212 can have cylindrical or rectangular section.As shown in Fig. 2, the bottom surface of permanent magnet 211 is close to ferromagnetic steel to be measured, pressure
Force snesor 22 is placed on the bottom end of soft magnetism stick 212.
Pressure sensor 22 includes the insulating layer 221 stacked gradually from top to bottom, upper metal conductor layer (Cu) 222, partly leads
Polymeric powder composite layer 223, lower metal conductor layer 224 and the passivation layer 225 of body, wherein insulating layer 221 is located at pressure sensing
The top of device 22 is directly contacted with soft magnetism stick 212, and polymeric powder composite layer 223 is the sensing element of pressure sensor 22, by
Cause impedance variations in pressure change, so that pressure signal is converted into electricity by this pressure sensitive of polymeric powder composite layer 223
Signal is exported in the form of the current value of variation via metal conductor layer 222 and 224, and lower metal conductor layer (Cu) 224 completes closure
Road, passivation layer 225 is to protect pressure sensor 22.
Particularly, non-destructive monitoring system of the invention can also include ultrasonic sensor 3, temperature sensor 4 and displacement
Sensor 5.Ultrasonic sensor 3 and temperature sensor 4 are arranged on the foot of monitoring probe 2, with monitor its lower surface and to
The distance between ferromagnetic steel surface and environment temperature are surveyed, by monitoring the distance between sensor and ferromagnetic steel surface to be measured,
Can eliminate sensor on the steel surface symmetrically or non-symmetrically position the problem of, monitoring environment temperature can eliminate due to temperature become
The uncertainty of sensor caused by changing.Particularly, displacement sensor 5 is installed beside ultrasonic sensor 3, pressure can be monitored
Displacement of the force snesor 22 along ferromagnetic steel surface to be measured.In some embodiments, it can be monitored (such as by line speed
Encoder) information of the relative velocity about ferromagnetic steel to be measured is provided.It should be understood that for the monitoring velocity of ferromagnetic steel to be measured
Monitoring method be not limited to above two method.The data transmission of above-mentioned all the sensors is controlled by integrated circuit, this
The integrated circuit of invention includes output end two parts of the input terminal and output data for pressure sensor power supply.
Fig. 3 is the planar structure signal of the non-destructive monitoring system including multiple monitoring probes 2 of one embodiment of the invention
Figure can be realized the flat scanning detection in monitoring region, wherein figure (a) is main view, figure (b) is top view.It is shown in Fig. 3
Example in, non-destructive monitoring system includes multiple monitoring probes 2 arranged in parallel, including multiple pole orientations are identical and have vertical
The straight NdFeB permanent magnet in magnetic field and the soft magnetism stick of identical quantity.Ultrasonic wave is placed in the bottom middle position of monitoring probe 2 to pass
Sensor, temperature sensor, displacement sensor, integrated circuit is organized into input terminal (powering to pressure sensor) and output end is (defeated
Data out) two parts.This pop one's head in sensing element arrangement may be implemented it is primary it is unenhanced after obtain multi-channel testing data, reduce
Detection time.
Fig. 4 is the planar structure signal of the non-destructive monitoring system including multiple monitoring probes of another embodiment of the present invention
Figure, wherein figure (a) is main view, figure (b) is top view.Monitoring probe is two-dimensional stress sensor array in this example, can
Realize that test is swept in the face of the stress level in the plane of sample to be tested, i.e., by once-through operation and without mobile device and to test sample
Product, the entire whole stress related datas monitored in area planar that you can get it.In this example, monitoring system includes according to n
The pole orientation of the evenly arranged multiple monitoring probes of the array of X n, the NdFeB permanent magnet in each monitoring probe is identical and has
Vertical magnetic field.The bottom middle position of entire array is provided with ultrasonic sensor 3, temperature sensor 4 and displacement sensor
5, there is after all circuit integrations probe inner tip to extend to and external is connected with computer.In this example, all circuit collection
Outside is extended to by the inner tip of monitoring probe after to be connected with computer A.It, can be with by computer and software calculating simulation
Stress level in entire plane is intuitively shown by three-dimensional image, corresponding monitoring region can immediately arrive at
The residual stress level in specified region.It particularly, can be with by the size and display density in probe that adjust sensing element
Realize the monitoring operation of different resolution and accuracy.
Fig. 5 is the output relation of monitoring probe shift length and stress level of the invention.By determining this relationship, this is
The monitoring signals of system, which could be converted to be reduced by electric signal, corresponds to the display for monitoring registration really
Residual stress level in sample to be tested.Meanwhile the quantization of residual stress level may be implemented according to this typical dependence.
The present invention also provides a kind of processing methods of residual stress based on above-mentioned non-destructive monitoring system, and flow chart is as schemed
Shown in 6, the specific steps of which are as follows:
1, ferromagnetic steel testpieces is selected.
2, the ferromagnetic steel testpieces is processed in the production line, and completes required heat treatment process.
3, the monitoring for carrying out residual stress level to the testpieces using above-mentioned non-destructive monitoring system, specifically includes step:
Monitoring probe is clamped, so that monitoring probe is carried out position correction and is moved along ferromagnetic steel to be measured, completes monitoring probe pair
The mobile monitoring of ferromagnetic steel, obtains monitoring data；
Obtained monitoring data are transferred to signal reception by integrated circuit and data processing module, the signal connect
It receives and data processing module stays alone the data sheet of pressure sensor after managing amplification conversion, same to ultrasonic sensor, displacement sensing
Device and the data of temperature sensor acquisition pass through integrated circuit together and are transferred to computer A；
It after all data of computer A real-time collecting, is shown by display, the data of pressure sensor monitoring pass through
Lebview real-time software is shown as the curve of cyclical fluctuations with monitoring probe change in displacement on the display of computer A, passes through analysis
The fluctuation situation of curve judges the residual stress distribution condition of ferromagnetic steel to be measured.
4, the monitoring result in step 3 is judged, if residual stress level is up to standard, which can be straight by examining
Pick out factory；If residual stress level is excessively high, which is sent to stress and repairs work area, for the residual stress monitored
Excessively high region carries out heat treatment and stress reparation again.
5, step 3 and 4 is repeated, until the residual stress level of the testpieces monitored is up to standard.
The test data that all the sensors are collected into can all be transferred to signal reception and data processing mould by integrated circuit
Block, which stays alone the data sheet of pressure sensor 22 after reason amplification conversion, with ultrasonic sensor 3,4 and of displacement sensor
The data that temperature sensor 5 acquires pass through integrated circuit together and are transferred to computer A.In some embodiments, signal receives
And the measurement range of data processing module 13 is ± 5V, resolution ratio is 24.It should be understood that practical application is not limited to this performance
Range.
Computer A can be with all data of real-time collecting, and are shown by display, the data that pressure sensor 22 monitors
It is shown as on the display of computer A with monitoring by Lebview real-time software or similar real-time display image software
The curve of cyclical fluctuations for 2 or 2 ' change in displacement of popping one's head in, the fluctuation situation by analyzing curve may determine that the remnants of object to be measured are answered
Power distribution situation.It is the residual stress curve that single monitoring obtains such as Fig. 5.
The monitoring system that the present invention announces is by mechanical arm clamps monitoring probe, on object surface to be measured along side to be surveyed
To movement, real-time monitoring curve can be obtained, obtains the distribution situation of the residual stress of the ferromagnetic steel surface of measured zone and inside,
Test speed is fast, high resolution, and monitoring probe can carry out a variety of array settings according to actual needs, further speed up prison
Degree of testing the speed.
What is applied above is only some embodiments of the application.For those of ordinary skill in the art, not
Under the premise of being detached from the application concept, several variations and modifications can also be made, these belong to the protection model of the application
It encloses.
Claims (10)
1. the non-destructive monitoring system of residual stress in a kind of ferromagnetic steel, which is characterized in that including mechanical arm, monitoring probe, letter
It number receives and data processing module, computer A and the computer B for controlling mechanical arm movement,
Wherein, the distal end of the mechanical arm is provided with the pneumatic clamp for clamping the monitoring probe, and the signal connects
Receive and data processing module be electrically connected by circuit and the monitoring probe and the computer A, signal reception and
Data processing module receives and converts the monitoring information of the monitoring probe, and the monitoring information is transmitted to the computer
It is shown on A,
The monitoring probe includes magnetic field generator and pressure sensor, and the magnetic field generator includes permanent magnet and soft magnetism stick,
Close to ferromagnetic steel to be measured, the pressure sensor is placed in the permanent magnet and the soft magnetism stick on the bottom edge of the permanent magnet
Between.
2. system according to claim 1, which is characterized in that the non-destructive monitoring system includes that the monitoring is visited
Head.
3. system according to claim 2, which is characterized in that the non-destructive monitoring system further includes arranged for interval described
Ultrasonic sensor, temperature sensor and the displacement sensor of the foot of monitoring probe.
4. system according to claim 1, which is characterized in that the non-destructive monitoring system includes that multiple monitorings are visited
Head, multiple monitoring probes are at array arrangement.
5. system according to claim 1, which is characterized in that the non-destructive monitoring system includes that multiple monitorings are visited
Head, multiple monitoring probe parallel arrangements.
6. system according to claim 4 or 5, which is characterized in that the non-destructive monitoring system further includes that arranged for interval exists
Ultrasonic sensor, temperature sensor and the displacement sensor in the bottom middle position of multiple monitoring probes.
7. system described in one of -5 according to claim 1, which is characterized in that the pressure sensor includes from top to bottom successively
The insulating layer of stacking, upper metal conductor layer, the polymeric powder composite layer of semiconductor, lower metal conductor layer and passivation layer, wherein
The top that the insulating layer is located at the pressure sensor is directly contacted with the soft magnetism stick.
8. system described in one of -5 according to claim 1, which is characterized in that the magnetic field generator include a NdFeB forever
Magnet and a soft magnetism stick, direction are cylindrical or rectangle along the direction S-N, the section of the soft magnetism stick.
9. the non-destructive monitoring method of residual stress in a kind of ferromagnetic steel carried out using system described in one of claim 1-8,
It is characterized by comprising the following steps:
S01: ferromagnetic steel testpieces to be measured is processed in the production line, carries out corresponding heat treatment process；
S02: the monitoring of residual stress level is carried out to the testpieces using system described in one of claim 1-8；
S03: judging the monitoring result in step S02, if residual stress level is up to standard, which can be straight by examining
Pick out factory；If residual stress level is excessively high, which is sent to stress and repairs work area, for the residual stress monitored
Excessively high region carries out heat treatment and stress reparation again；
S04: repeating step S02 and S03, until the residual stress level of the testpieces monitored is up to standard.
10. according to the method described in claim 9, it is characterized in that, step S02 specifically:
Monitoring probe is clamped, monitoring probe is made to carry out position correction and move along ferromagnetic steel to be measured, completes monitoring probe to ferromagnetic
The mobile monitoring of steel, obtains monitoring data；
Obtained monitoring data signal is transferred to by integrated circuit to receive and data processing module, the signal receive and
Data processing module by the data sheet of pressure sensor stay alone reason amplification conversion after, same to ultrasonic sensor, displacement sensor and
The data of temperature sensor acquisition pass through integrated circuit together and are transferred to computer A；
It after all data of computer A real-time collecting, is shown by display, the data of pressure sensor monitoring pass through Lebview
Real-time software is shown as the curve of cyclical fluctuations with monitoring probe change in displacement on the display of computer A, passes through analysis curve
Fluctuation situation judges the residual stress distribution condition of ferromagnetic steel to be measured.
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| CN110701990A (en) * | 2019-10-19 | 2020-01-17 | 北京工业大学 | Furnace tube carburized layer thickness evaluation method and system based on magnetic field disturbance and magnetic force double detection rings |
| CN111060227A (en) * | 2019-11-27 | 2020-04-24 | 成都航大新材料有限公司 | In-situ stress detection and repair integrated system |
| CN112097972A (en) * | 2020-08-12 | 2020-12-18 | 佛山方竹科技有限公司 | Method for rapidly measuring internal stress of building ceramic plate and application |
| CN110824390B (en) * | 2019-10-25 | 2021-04-27 | 成都航大新材料有限公司 | Ferromagnetic material local stress distribution nondestructive testing device based on MDL |
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