CN103792028A - Magnetic stress sensor probe - Google Patents
Magnetic stress sensor probe Download PDFInfo
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- CN103792028A CN103792028A CN201210421309.9A CN201210421309A CN103792028A CN 103792028 A CN103792028 A CN 103792028A CN 201210421309 A CN201210421309 A CN 201210421309A CN 103792028 A CN103792028 A CN 103792028A
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- magnetic core
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- stress sensor
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Abstract
The invention discloses a magnetic stress sensor probe. The magnetic stress sensor probe comprises a magnetic core support which is obtained through machining pure iron or a chunk-shaped amorphous ferromagnetic material; the magnetic core support is provided with four magnetic core pins which extend from one side of the magnetic core support; a magnetizing coil and a detection coil respectively wrap two pairs of magnetic core pins which are arranged diagonally; the magnetizing coil is connected with an alternating current power supplying device; and the detection coil is in communication connection with a processing chip of a sensor. According to the magnetic stress sensor probe, a magnetic characteristic anisotropic effect of a measured point is converted into electric signals that can be conditioned through the magnetizing coil and the detection coil, and the electric signals are transmitted to the processing chip of the sensor, and therefore, the load or residual stress of the ferromagnetic material can be detected. The magnetic stress sensor probe is advantageous in excellent electrical properties and magnetic properties, high sensitivity and high surface adaptability.
Description
Technical field
The present invention relates to a kind of sensor of the load or the residual stress that detect ferrimagnet, relate in particular to a kind of magnetic stress sensor probe of the load or the residual stress that are adapted to ferrimagnet.
Background technology
Ferrimagnet all can produce different residual stresss in machining and hot worked process, the existence of residual stress has very large impact to the mechanical property of material, particularly evident in the manufacture of weldment and heat treatment process, the existence of residual stress on the one hand workpiece can reduce intensity, make workpiece in the process of manufacturing, produce the defective workmanships such as distortion and cracking, on the other hand in the Spontaneous release process after manufacture, the mechanical property such as fatigue strength, stress corrosion of material is reduced, thereby cause the problems in use.
Therefore, manufacture and design magnetic stress measurement instrument for ferrimagnet being carried out to residual stress detection people, in magnetic stress measurement, sensor is that parts are built in the pass of magnetic stress measurement instrument, it has determined that the ferrimagnet measuring point place magnetic characteristic effect of anisotropy being caused by stress is transformed into the concrete form of electric signal and the means of method and realization, traditional magnetic stress sensor exists accuracy of detection low, the shortcoming of poor sensitivity and bad adaptability.
Summary of the invention
The object of the present invention is to provide a kind of magnetic stress sensor probe, it has good electric property and magnetic performance, highly sensitive and surperficial strong adaptability feature.
The object of the invention is to be achieved through the following technical solutions:
A kind of magnetic stress sensor probe, it comprises magnetic core support, one side of described magnetic core support is extended with several magnetic core pin, on described magnetic core pin, be wound with a magnetizing coil and a magnetic test coil, described magnetizing coil connects AC power supply device, the process chip communication connection of described magnetic test coil and sensor.
Especially, described magnetic stress sensor probe cooperation measured point is any structure of plane, cylindrical curved surface, sphere curved surface.
Especially, described magnetic core support is processed by electrical pure iron or large block amorphous ferrimagnet.
Especially, described magnetic core support is extended with four magnetic core pin, and magnetizing coil and magnetic test coil are wrapped in respectively on the magnetic core pin of two pairs of diagonal angles settings.
Beneficial effect of the present invention is, described magnetic stress sensor probe is transformed into the magnetic characteristic effect of anisotropy of measured point the electric signal that can be nursed one's health and sends to the process chip of sensor by magnetizing coil and magnetic test coil, detect with the load to ferrimagnet or residual stress, there is good electric property and magnetic performance.Highly sensitive, surperficial strong adaptability.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the structural representation of magnetic stress sensor probe of the present invention.
In figure:
1, magnetic core support; 2, magnetic core pin; 3, magnetizing coil; 4, magnetic test coil; 5, magnetizing coil extension line; 6, magnetic test coil extension line.
Embodiment
Please refer to shown in Fig. 1, Fig. 1 is the structural representation of magnetic stress sensor probe of the present invention.In the present embodiment, described magnetic stress sensor probe comprises magnetic core support 1, described magnetic core support 1 is processed by pure iron, and a side of described magnetic core support 1 is extended with four magnetic core pin 2, on described magnetic core pin 2, be wound with a magnetizing coil 3 and a magnetic test coil 4, described magnetizing coil 3 and magnetic test coil 4 are wrapped in respectively on the magnetic core pin 2 of two pairs of diagonal angles settings, described magnetizing coil 3 is by magnetizing coil extension line 5 incoming transport electric currents, and described magnetic test coil 4 is the process chip communication connection with sensor by magnetic test coil extension line 6.
Described magnetic stress sensor probe coordinates measured point to can be any structure of plane, cylindrical curved surface, sphere curved surface.
The principle of work of described magnetic stress sensor probe is: magnetizing coil is connected with alternating current, this probe is placed on steel plate, in the time there is no stress, two magnetic core pin that probe is wound with magnetic test coil 4 are all in equimagnetic site, magnetic test coil 4 does not have output signal, now output voltage is zero, in the time that steel have residual stress, owing to there being residual stress on steel plate, so there is the magnetic anisotropy being caused by residual stress in steel in the time being magnetized, there is variation in the magnetic that is now wound with two magnetic core pin of magnetic test coil 4, it is the magnetic potential difference of bipod, therefore in the time that magnetization signal is cyclical variation, in output winding, will produce output signal voltage.This voltage and magnetization voltage by the detection same period after, its output voltage
here,
the principle stress acting on steel plate,
be
with the angle of probe orientation, K is the constant of magnetic strain.When actual measurement stress, the direction with magnetic probe in the time that measurement point is measured maximum output voltage is probe orientation, is principal direction of stress.Then, utilize calibration curve to obtain main residual stress poor.
Above-mentioned magnetic stress sensor probe is transformed into the magnetic characteristic effect of anisotropy of measured point the electric signal that can be nursed one's health and sends to the process chip of sensor by magnetizing coil and magnetic test coil, detect with the load to ferrimagnet or residual stress, there is good electric property and magnetic performance.Highly sensitive, surperficial strong adaptability.
Claims (4)
1. a magnetic stress sensor probe, it is characterized in that: comprise magnetic core support, one side of described magnetic core support is extended with several magnetic core pin, on described magnetic core pin, be wound with a magnetizing coil and a magnetic test coil, described magnetizing coil connects AC power supply device, the process chip communication connection of described magnetic test coil and sensor.
2. magnetic stress sensor probe according to claim 1; It is characterized in that: it is any structure of plane, cylindrical curved surface, sphere curved surface that described magnetic stress sensor probe coordinates measured point.
3. magnetic stress sensor probe according to claim 1; It is characterized in that: described magnetic core support is processed by electrical pure iron or large block amorphous ferrimagnet.
4. magnetic stress sensor probe according to claim 1; It is characterized in that: described magnetic core support is extended with four magnetic core pin, magnetizing coil and magnetic test coil are wrapped in respectively on the magnetic core pin of two pairs of diagonal angles settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421309.9A CN103792028A (en) | 2012-10-29 | 2012-10-29 | Magnetic stress sensor probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421309.9A CN103792028A (en) | 2012-10-29 | 2012-10-29 | Magnetic stress sensor probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103792028A true CN103792028A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210421309.9A Pending CN103792028A (en) | 2012-10-29 | 2012-10-29 | Magnetic stress sensor probe |
Country Status (1)
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| CN (1) | CN103792028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513559A (en) * | 2018-07-20 | 2021-03-16 | 帝人株式会社 | Sensor device |
-
2012
- 2012-10-29 CN CN201210421309.9A patent/CN103792028A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112513559A (en) * | 2018-07-20 | 2021-03-16 | 帝人株式会社 | Sensor device |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |