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A kind of in-situ force-magnetic coupling experimental device and experimental method

A technology of experimental device and experimental method, applied in the field of in-situ force-magnetic coupling experimental device

Active Publication Date: 2020-10-23
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, in the absence of in-situ force-magnetic coupling experimental methods and devices, it is necessary to solve the problems of miniaturization and layout flexibility of force-magnetic coupling experimental devices, and establish The technology of testing and analyzing performance and structure at the same time

Method used

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  • A kind of in-situ force-magnetic coupling experimental device and experimental method
  • A kind of in-situ force-magnetic coupling experimental device and experimental method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The shape of the sample rod in this embodiment is a long rod with a circular cross section, and the shape of the sample hole 7 is circular.

[0030] The specific implementation steps of the in-situ force-magnetic coupling experimental method of this embodiment are as follows:

[0031] a. Device installation

[0032] Place the stress loading device 1 on the load-bearing platform 2 to ensure that the central axes of the two coincide. Then, the magnetic field applying device 3 is installed on the bottom plate 5 of the stress loading device 1 through the pillar 4 , and the sample rod 9 is horizontally passed through the sample hole 7 of the yoke 6 . Adjust the height position of the sample hole 7 by rotating the pillar 4 to make it consistent with the center height of the clamp 8 , and then extend the two ends of the sample rod 9 into the clamp 8 and install them on the clamp 8 respectively.

[0033] b. Measuring geometric layout

[0034] Arranging the radiation source 1...

Embodiment 2

[0042] The shape of the sample rod in this embodiment is a long rod with a rectangular cross section, and the shape of the sample hole 7 is rectangular.

[0043] Loosen the screw between the fixed excitation coil 10 and the yoke 6, replace the yoke 6 with the sample hole 7 as a rectangular yoke 6, then fix the screw between the excitation coil 10 and the yoke 6, and then follow the example The implementation of 1 continues to complete the measurement work of this embodiment.

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Abstract

The invention discloses an in-situ force-magnetism coupling experiment device and an experiment method. A structure that a magnetic field application device of the experiment device is arranged in a stress loading device is adopted, a sample holder is subjected to force-magnetism coupling loading through fixtures at the two ends and two magnetic loops respectively, and in-situ force-magnetism coupling measurement is executed through symmetric measurement geometric layout. The experiment method comprises steps as follows: an assembly mode of the magnetic field application device is selected according to the shape of the sample holder, symmetric distribution layout of a radiation source and a detector on the two sides of the stress loading device is adjusted according to layout angle, and under the symmetric measurement geometric layout, the sample holder is subjected to synchronous stress and magnetic field loading through the stress loading device and the magnetic field application device respectively, and ray signals from the sample holder are collected by the detector. The experiment device has the advantages of miniaturization and flexible layout, and the experiment method is applicable to response to macro-performance of a ferromagnetic material and real-time detection for internal microstructure evolution.

Description

technical field [0001] The invention belongs to the technical field of material physical performance analysis and testing, and in particular relates to an in-situ force-magnetic coupling experimental device and an experimental method. Background technique [0002] Soft ferromagnetic smart materials with stress-strain response in an external magnetic field can be used to make components such as transducers and brakes, and are widely used in national defense, marine engineering, precision control and other fields. Such smart materials have the effect of mutual coupling of magnetism and mechanics, and their properties are often dependent on both magnetic field and stress. Therefore, force-magnetic coupling experiments usually rely on bulky magnetic field and stress application devices, and sensors such as strain gauges are pasted on the surface of the material to test the performance changes of the material under the external magnetic field, stress or both. Based on these meas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/22G01N23/2204
CPCG01N23/225G01N2223/507
Inventor 张昌盛庞蓓蓓王虹李建杨钊龙孙光爱
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF