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Magnetostriction material performance testing device and method

A magnetostrictive material and testing device technology, applied in the field of magnetic measurement, can solve the problems of heavy mass, large frame structure yoke, complex prestress loading mechanism, etc., and achieve the effect of light weight and small volume

Active Publication Date: 2020-12-08
CENT IRON & STEEL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prestressed loading mechanism of the measuring device is complex and unstable, the yoke of the frame structure is large in size and heavy in weight, there is no fixed connection and cooperation required by the anti-shock and vibration structure between the components, and the laser measurement requires a high vibration and stable environment
Therefore, this test device is not suitable for measuring the magnetic properties of magnetostrictive materials in shock vibration environment and variable temperature environment

Method used

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  • Magnetostriction material performance testing device and method
  • Magnetostriction material performance testing device and method
  • Magnetostriction material performance testing device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1 - Pressurization with gas

[0067] figure 1 It is a schematic structural diagram of the first embodiment of a magnetostrictive material magnetic property testing device of the present invention. like figure 1 As shown, the test device of this embodiment includes a main body part 1 with a mounting base, an excitation coil 2, a keel 3, a magnetic induction measurement coil 4, a Hall probe 5, a resistance strain gauge 6, a material test sample 7, and a screw lock The gland 8, the T-shaped pressurizing rod 9, the first sealing ring 10, the first fastener 11, the second sealing ring 12, the second fastener 13, and the pressure gas connection pipe 13-2.

[0068] Wherein, the lower part of the main body part 1 is a disc-type base 1-2, the disc-type base 1-2 has four installation holes 1-1 symmetrically and evenly distributed, and the upper part of the main body part 1 is a tubular cylinder with an open upper end, The upper end of the inner side of the tubular cy...

Embodiment 2

[0070] Example 2 - Pressurization with elastic elements

[0071] figure 2 It is a schematic structural diagram of the second embodiment of a magnetostrictive material magnetic property testing device of the present invention. like figure 2 As shown, the test device of this embodiment includes a main body part 1 with a mounting base, an excitation coil 2, an excitation coil keel 3, a magnetic induction measurement coil 4, a Hall probe 5, a resistance strain gauge 6, a material test sample 7, a thread Lock the pressing cover 8 , the T-shaped pressing rod 9 , the first fastener 11 , the second fastener 13 , and the elastic element 14 . The lower part of the main body part 1 is a disc-type base 1-2, the base has four symmetrically distributed mounting holes 1-1, the upper part is a tubular cylinder with an open upper end, and the inner upper end of the tubular cylinder has an inner thread 1 of the main body part. -5. There are through holes 1-3 for the excitation coil power...

Embodiment 3

[0073] Example 3 - The test device is connected to a shock, vibration test bench

[0074] image 3 It is a schematic structural diagram of the third embodiment of a device for testing the magnetic properties of magnetostrictive materials according to the present invention. like image 3 As shown, in this embodiment, the test device 16 of the present invention is installed on the shock and vibration test bench 18 , which includes the test device 16 and the shock and vibration test bench 18 . Put the magnetostrictive material test sample 7 into the test device 16, screw the first fastener 11 into the main body part 1 through the thread, and install the T-shaped pressure rod 9 with the first sealing ring 10 into the first in fastener 11. Place the second sealing ring 12 in the sealing groove at the upper end of the first fastener 11 , and then screw the second fastener 13 into the first fastener 11 until the second sealing ring 12 is pressed tightly. The testing device 16 i...

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Abstract

The invention discloses a magnetostriction material performance testing device and method. The testing device comprises a main body part, a first fastener, a second fastener, an excitation coil, an excitation coil keel, a magnetic induction measuring coil, a Hall probe, a resistance strain gauge, a material testing sample piece, a threaded locking gland, a T-shaped pressurizing rod and a pressuregas connecting pipe or an elastic element. The excitation coil, the magnetic induction measuring coil, the Hall probe and the excitation coil keel are solidified into a whole through epoxy resin, allcomponents of the testing device are fixed together through threaded connection and the threaded locking gland, and a stable structure is formed. The testing device has the advantages of being small in size, light in weight, integrated and stable in structure, can be installed on a vibration test bed and an impact test bed and placed in a temperature test box, and tests the magnetization performance, the magnetostriction performance and the temperature stability of the magnetostriction material under the conditions of vibration, impact and temperature.

Description

technical field [0001] The invention belongs to the field of magnetic measurement, in particular to a device and method for testing magnetic performance parameters of magnetostrictive materials under vibration, shock and temperature environments. Background technique [0002] Magnetostrictive material belongs to a magnetic functional material, or is more similar to a soft magnetic material. Magnetostrictive materials can be magnetized by an external magnetic field, so that the internal magnetization state of the material changes to generate magnetic induction, and at the same time, the shape / size of the material changes. Returning to the state before magnetization, the change in the shape and size of the material caused by the change of the magnetization state of the material due to the magnetization of the external magnetic field is called the 'magnetostrictive effect', and the rate of change in the shape and size is called the 'magnetostriction coefficient'. The value des...

Claims

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Application Information

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IPC IPC(8): G01R33/18G01R33/00G01M7/08G01M7/02
CPCG01R33/18G01M7/02G01M7/08G01R33/007
Inventor 张洪平牟星程超赵栋梁祁焱徐立红郭世海
Owner CENT IRON & STEEL RES INST
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