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Stress-torsion magnetic impedance integration test device of metal fiber

A metal fiber, comprehensive testing technology, applied in the direction of magnetic performance measurement, etc., can solve the problem that impedance measurement cannot be directly and effectively achieved, and achieve the effect of easy replacement, less fiber breakage and kink, and improved test accuracy.

Active Publication Date: 2015-08-26
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing test device cannot directly and effectively realize the impedance measurement of the metal fiber under the stress torsion condition, and to provide a comprehensive test device for the stress torsion magnetic impedance of the metal fiber

Method used

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  • Stress-torsion magnetic impedance integration test device of metal fiber
  • Stress-torsion magnetic impedance integration test device of metal fiber
  • Stress-torsion magnetic impedance integration test device of metal fiber

Examples

Experimental program
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Embodiment 1

[0029] Embodiment one: if figure 1 As shown, the stress-torsion magnetic impedance comprehensive testing device of the metal fiber of the present invention comprises a comprehensive testing platform and an attached magnetic field generating device, and the comprehensive testing platform is connected with four terminals for collecting the impedance of the metal fiber to be measured in the platform. Magnetic impedance test and analysis system and magnetic field correction and monitoring system; the magnetic field generating device includes a Helmholtz coil 3 and a DC power supply 6 connected thereto; Stress torsion platform 4; said four-terminal magneto-impedance test and analysis system includes an impedance analyzer 1; said magnetic field correction and monitoring system includes a fluxgate uniaxial magnetometer 2 and its sensor set on one side of said stress-free torsion platform 4 probe, and the axis of the probe is parallel to the axis of the Helmholtz coil 3, and its axis ...

Embodiment 2

[0033] Embodiment two: if figure 2 As shown, the present embodiment is a further limitation on the implementation of the stress-free torsional magnetic impedance comprehensive test device, and the further limitation is: the stress-free torsion platform 4 is the left and right relative upper outriggers of the bakelite skeleton. The left horizontal wire shaft and the right horizontal wire shaft on the same axis are slidingly matched in the circumferential direction; the outer end of the left horizontal wire shaft passing through the left upper outrigger is fixedly fitted with a rotating nut 4-1, and the inner end is fixedly fitted with a left aluminum alloy The rotating body 4-4, the inner and outer fastening nuts 4-2 located on the inner and outer sides of the left upper outrigger fasten the left horizontal wire shaft; Nut 4-1, the inner end is fixedly matched with the right aluminum alloy rotating body 4-8, and the inner and outer fastening nuts 4-2 located on the inner and o...

Embodiment 3

[0036] Embodiment 3: This embodiment is a further limitation of the stress-torsion magnetic impedance comprehensive test device for the metal fiber described in Embodiment 1. The torsion range parameter applied by the stress-free torsion platform is: 0-6667 2π rad / m.

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Abstract

The invention relates to a stress-torsion magnetic impedance integration test device of a metal fiber and aims at solving a problem that a test can not be directly and effectively performed in the prior art. The device comprises an integration test platform and an attached magnetic field generation apparatus. Integration test platform matching is used for collecting a four-terminal magnetic impedance test and analysis system of metal fiber impedance to be tested in the platform and magnetic field calibration and monitoring system. The magnetic field generation apparatus comprises a Helmholtz coil and a direct-current power supply which matches with and is connected to the coil. The integration test platform is a stress-free torsion platform which exerts torsion on the metal fiber to be tested or a stress-torsion combined platform used for exerting the stress and the torsion on the metal fiber. The magnetic field calibration and monitoring system comprises a single axis magnetometer and a probe arranged on one side of the torsion platform. An axial direction of the probe is parallel to an axial direction of the Helmholtz coil and an axis is parallel to and is consistent with a height of the metal fiber. The device has the following advantages that it is convenient to replace the test platform; the stress and torsion control is accurate; and the fiber is not easy to break and kink.

Description

technical field [0001] The invention relates to a stress torsion magnetic test device, in particular to a magnetic impedance characteristic test device under stress torsion control of metal fibers. Background technique [0002] Usually, micro-scale metal fibers have a special structure and are in a long-range disordered state. They have the characteristics of good geometric symmetry, special magnetic domain structure and physical effects (such as giant magneto-impedance effect), especially under the action of tensile stress or torsion. The magneto-impedance effect is superior to thin strips and films and other types of materials. Therefore, micro-scale metal fibers are suitable as new sensitive materials for miniature stress or torsion sensors (see M.-H.Phan, H.-X.Peng.Giant magnetoimpedance materials: Fundamentals and applications. Progress In Materials Science. 2008, 53(2): 323-420.). Under different tensile stress or torsion conditions, the magnetic impedance of micro-sc...

Claims

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Application Information

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IPC IPC(8): G01R33/12
Inventor 刘景顺李泽杜赵新
Owner INNER MONGOLIA UNIV OF TECH
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