CN202171583U - Magnetic stress nondestructive detecting system - Google Patents
Magnetic stress nondestructive detecting system Download PDFInfo
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- CN202171583U CN202171583U CN2011202728284U CN201120272828U CN202171583U CN 202171583 U CN202171583 U CN 202171583U CN 2011202728284 U CN2011202728284 U CN 2011202728284U CN 201120272828 U CN201120272828 U CN 201120272828U CN 202171583 U CN202171583 U CN 202171583U
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Abstract
The utility model discloses a magnetic stress nondestructive detecting system which comprises a magnetic stress sensor, a magnifying and rectifying unit, a processing unit, and a display unit, wherein the magnetic stress sensor comprises an AC magnetizing unit and a detecting coil unit used for extracting electrical signals of magnet property anisotropy effect of a tested point; the magnifying and rectifying unit is used for magnifying and rectifying electrical signals sent by the detecting coil unit, and then sending a voltage signal to the processing unit; the processing unit is used for calculating the intensity and the direction of both two-dimensional magnetic stress and three-dimensional magnetic stress of the tested point based on the voltage signal sent by the magnifying and rectifying unit; and the display unit is used for displaying the intensity and the direction of both the two-dimensional magnetic stress and the three-dimensional magnetic stress of the tested point. The magnetic stress nondestructive detecting system provided by the utility model realizes detection on both two-dimensional stress and three-dimensional stress, has high measurement efficiency and simple and flexible testing methods, can reach any part of a tested ferromagnetic material object, can carry out non-contact nondestructive measurement with a high measuring accuracy, and can test the stress of an iron magnetic object with a surface coating.
Description
Technical field
The utility model relates to the load or the residual stress of ferrimagnet, relates in particular to a kind of contactless nondestructive detection system that is adapted to the load or the residual stress of ferrimagnet.
Background technology
Ferrimagnet all can produce different residual stresss in machining and hot worked process; The existence of residual stress has very big influence to the mechanical property of material; Particularly evident in the manufacturing of weldment and the heat treatment process, the existence of residual stress workpiece on the one hand can reduce intensity, makes workpiece in the process of making; Produce defective workmanships such as distortion and cracking; On the other hand in the natural dispose procedure after manufacturing, the mechanical properties such as fatigue strength, stress corrosion of material are reduced, thereby cause the problems in the use.
At present, a large amount of engineering practice confirms that loading stress is the principal element of mechanical properties such as the fatigue strength that influences large bridge, large pressurized vessel, large-scale metal structure material, stress corrosion.
Therefore, in order to carry out residual to ferrimagnet or loading stress detects people and manufactured and designed stress detection device, traditional stress detection device exists accuracy of detection low, and sense cycle is long, the shortcoming that serviceable life is short, cost is higher and method of testing is inconvenient.
The utility model content
The purpose of the utility model is to provide a kind of magnetic stress nondestructive detection system, and it has and has improved accuracy of detection, has shortened sense cycle, thereby prolongs the actual life of equipment, has reduced consumables cost, has guaranteed the characteristics of low-cost advantage simultaneously.
The purpose of the utility model is to realize through following technical scheme:
A kind of magnetic stress nondestructive detection system, it comprises:
At least one magnetic stress sensor; Said magnetic stress sensor comprises and is used for magnetic test coil unit that the measured point is carried out magnetized ac magnetization unit and is used to extract the electric signal of measured point magnetic characteristic effect of anisotropy, and said magnetic test coil unit sends detected electric signal and gives and amplify rectification unit;
One amplifies rectification unit, is connected with the magnetic stress sensor communication, is used to receive the electric signal that the magnetic test coil unit sends, and this electric signal is amplified, after rectification handles, sends a voltage signal to processing unit,
One processing unit; With amplify rectification unit and communicate by letter and be connected; After receiving the voltage signal that amplifies the rectification unit transmission; According to the regulation and control of size, orientation and the magnetization current frequency of this voltage signal and the calibration curve of same material, calculate the two-dimentional magnetic stress of measured point, the size and Orientation of three-dimensional magnetic stress
One display unit is used to show the two-dimentional magnetic stress of detected measured point, the size and Orientation of three-dimensional magnetic stress.
Especially, said magnetic stress sensor is set to one.
Especially, said ac magnetization unit is the ac magnetization coil that is arranged on the magnetic stress sensor.
The beneficial effect of the utility model does, said magnetic stress nondestructive detection system will contain the magnetic characteristic effect of anisotropy that exists in the ferrimagnet of residual stress or loading stress, and this physical influence changes into can nurse one's health electric signal.Harmless, the efficient detection of the size and Orientation of in use residual stress and loading stress two-dimensional stress of ferrimagnet, triaxiality are become a reality; Not only improved accuracy of detection; Shorten sense cycle, thereby prolonged the actual life of equipment; And having reduced consumables cost, cost is lower.
Description of drawings
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the system block diagrams of the utility model magnetic stress nondestructive detection system.
Among the figure:
1, magnetic stress nondestructive detection system; 2, magnetic stress sensor; 3, ac magnetization unit; 4, magnetic test coil unit; 5, amplify rectification unit; 6, processing unit; 7, display unit.
Embodiment
Please with reference to shown in Figure 1, Fig. 1 is the system block diagrams of the utility model magnetic stress nondestructive detection system.In present embodiment; Said magnetic stress nondestructive detection system 1 comprises a magnetic stress sensor 2; Said magnetic stress sensor 2 comprises and is used for magnetic test coil unit 4 that the measured point is carried out magnetized ac magnetization unit 3 and is used to extract the electric signal of measured point magnetic characteristic effect of anisotropy; Said ac magnetization unit 3 is for being arranged at the ac magnetization coil on the magnetic stress sensor 2, and said magnetic test coil unit 4 sends detected electric signal and gives amplification rectification unit 5; Said amplification rectification unit 5 is connected with 2 communications of magnetic stress sensor; Be used to receive the electric signal that magnetic test coil unit 4 sends; And to this electric signal amplify, after rectification handles; Send a voltage signal and give processing unit 6; Said processing unit 6 with amplify rectification unit 5 communications and be connected, receive the voltage signal that amplifies rectification unit 5 transmissions after, according to the regulation and control of size, orientation and the magnetization current frequency of this voltage signal and the calibration curve of same material; Calculate the two-dimentional magnetic stress of measured point, the size and Orientation of three-dimensional magnetic stress, display unit 7 is used for the two-dimentional magnetic stress of processing unit 6 detected measured points, the size and Orientation of three-dimensional magnetic stress are shown.
Said magnetic stress nondestructive detection system 1 utilizes these characteristics of effect of anisotropy that have magnetic characteristic in the ferrimagnet that contains residual stress or loading stress; The place utilizes the 3 pairs of measuring points in ac magnetization unit to carry out ac magnetization in strong magnetic material stress measured point; Use a magnetic test coil unit 4 to extract the electric signal of tested ferrimagnet measuring point place magnetic characteristic effect of anisotropy then; This electric signal utilization is amplified voltage signal of output behind the signal conditions such as rectification unit 5 amplifies, rectification and utilize the regulation and control of frequency of size, orientation and the magnetization current of this signal; Calculate the two-dimensional stress at tested ferrimagnet measuring point place, the size and Orientation of triaxiality through processing unit 6, thereby realized the ferrimagnet residual stress in use and harmless, the efficient detection of loading stress.
Detection two-dimentional, triaxiality that above-mentioned magnetic stress nondestructive detection system has been realized, efficiency of measurement is high, method of testing is easy, flexible, can reach any position of tested ferrimagnet object; Measuring accuracy is high, can carry out non-contacting nondestructive measurement, more can survey the cated ferromagnetic object stress in measured object surface.
Claims (3)
1. magnetic stress nondestructive detection system is characterized in that: comprises,
At least one magnetic stress sensor; Said magnetic stress sensor comprises and is used for magnetic test coil unit that the measured point is carried out magnetized ac magnetization unit and is used to extract the electric signal of measured point magnetic characteristic effect of anisotropy, and said magnetic test coil unit sends detected electric signal and gives and amplify rectification unit;
One amplifies rectification unit, is connected with the magnetic stress sensor communication, is used to receive the electric signal that the magnetic test coil unit sends, and this electric signal is amplified, after rectification handles, sends a voltage signal to processing unit,
One processing unit is communicated by letter and is connected with amplifying rectification unit, is used for the calibration curve of, orientation big or small according to the voltage signal that receives and magnetization current frequency and same material, calculates the two-dimentional magnetic stress of measured point, the size and Orientation of three-dimensional magnetic stress,
One display unit is used to show the two-dimentional magnetic stress of detected measured point, the size and Orientation of three-dimensional magnetic stress.
2. magnetic stress nondestructive detection system according to claim 1; It is characterized in that: said magnetic stress sensor is set to one.
3. magnetic stress nondestructive detection system according to claim 1; It is characterized in that: said ac magnetization unit is the ac magnetization coil that is arranged on the magnetic stress sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202728284U CN202171583U (en) | 2011-07-29 | 2011-07-29 | Magnetic stress nondestructive detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202728284U CN202171583U (en) | 2011-07-29 | 2011-07-29 | Magnetic stress nondestructive detecting system |
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| Publication Number | Publication Date |
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| CN202171583U true CN202171583U (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202728284U Expired - Fee Related CN202171583U (en) | 2011-07-29 | 2011-07-29 | Magnetic stress nondestructive detecting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411132A (en) * | 2011-07-29 | 2012-04-11 | 无锡强力环保科技有限公司 | Magnetic stress nondestructive detection system |
| CN105518449A (en) * | 2013-09-03 | 2016-04-20 | 西门子公司 | Sensor assembly and method for determining the mechanical surface stresses and/or the microstructure state |
-
2011
- 2011-07-29 CN CN2011202728284U patent/CN202171583U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411132A (en) * | 2011-07-29 | 2012-04-11 | 无锡强力环保科技有限公司 | Magnetic stress nondestructive detection system |
| CN105518449A (en) * | 2013-09-03 | 2016-04-20 | 西门子公司 | Sensor assembly and method for determining the mechanical surface stresses and/or the microstructure state |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20150729 |
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| EXPY | Termination of patent right or utility model |