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Testing device for magnetic conductivity of wave-absorbing material

A technology for testing devices and absorbing materials, applied in measuring devices, measuring magnetic properties, using optical devices, etc., can solve problems such as damage to absorbing materials, high test costs, and expensive impedance analyzers, and achieve continuous detection and detection The result is accurate and the effect of preventing influence

Pending Publication Date: 2022-07-12
ZHEJIANG YUANBANG MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the process of actually testing the magnetic permeability of wave-absorbing materials, there is such a problem: the current method of testing the magnetic permeability of wave-absorbing materials is mainly to cut the wave-absorbing material into a ring of Φ7×3mm with a knife die, Then use an impedance analyzer and fixture for detection, but the impedance analyzer is expensive, the fixture needs to be maintained and replaced frequently, the test cost is high, and it will damage the absorbing material, so it is not suitable for continuous detection of absorbing materials

Method used

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  • Testing device for magnetic conductivity of wave-absorbing material

Examples

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Embodiment 1

[0035] see Figure 1-6, this embodiment provides a test device for the magnetic permeability of a wave absorbing material. The test device 100 includes: a rotating part 110, the rotating part 110 includes a first rotating part 111, a second rotating part 112, the first rotating part 111 and the second rotating part 111. The rotating parts 112 cooperate to rotate and drive the wave absorbing material 200 to move; the inductance testing part 120 is provided with a through hole 127 for accommodating the wave absorbing material 200 to pass through, and the testing coil 121 is arranged on the through hole 127; The measurement part 130, the thickness measurement part 130 includes a first thickness measurement part 131 and a second thickness measurement part 132, the first thickness measurement part 131 and the second thickness measurement part 132 are arranged oppositely, and the first thickness measurement part 131 and the second thickness measurement part 131 are opposite. Between...

Embodiment 2

[0043] On the basis of Example 1, see Figure 1-6 , the thickness measuring part 130 is located between the inductance testing part 120 and the second rotating member 112 .

[0044] During the detection process of the wave absorbing material 200 , the wave absorbing material 200 starts from the first rotating part 111 , passes through the inductance testing part 120 , then passes through the thickness measuring part 130 , and is finally wound by the second rotating part 112 . Since the thickness measurement part 130 uses lasers and other instruments in the detection process, if the thickness measurement part 130 is disposed at the front end of the inductance measurement part 120 , the measurement result of the inductance measurement part 120 will be affected. Disposing the thickness measuring part 130 at a position far from the front end of the inductance measuring part 120 can prevent the thickness measuring part 130 from affecting the detection result of the inductance measu...

Embodiment 3

[0046] On the basis of Example 1, see Figure 1-6 , the testing device 100 further includes: a magnetic permeability calculating device 140 , the inductance testing part 120 and the thickness measuring part 130 are respectively connected to the magnetic permeability calculating device 140 .

[0047] After the inductance testing part 120 and the thickness measuring part 130 test and obtain the inductance and thickness data of the wave absorbing material 200, the value of the magnetic permeability can only be obtained after calculation. The measurement part 130 is connected in communication with the permeability calculation device 140 , and the inductance and thickness data detected by the inductance test part 120 and the thickness measurement part 130 are transmitted to the permeability calculation device 140 , and the magnetic permeability calculation device 140 calculates and obtains the magnetic permeability. Permeability results of the wave material 200 .

[0048] In a spe...

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Abstract

The invention provides a device for testing the magnetic conductivity of a wave-absorbing material, and the device comprises a rotating part which comprises a first rotating part and a second rotating part, and the first rotating part and the second rotating part rotate cooperatively and drive the wave-absorbing material to move; the inductance testing part is provided with a through hole for the wave-absorbing material to pass through, and the testing coil is arranged on the through hole; the thickness measuring part comprises a first thickness measuring piece and a second thickness measuring piece, the first thickness measuring piece and the second thickness measuring piece are oppositely arranged, and a testing area for the wave absorbing material to penetrate through is arranged between the first thickness measuring piece and the second thickness measuring piece; wherein the inductance testing part and the thickness measuring part are arranged between the first rotating piece and the second rotating piece. According to the detection device for the magnetic conductivity of the wave-absorbing material, the magnetic conductivity of the wave-absorbing material can be continuously detected under the condition that the wave-absorbing material is not damaged, and continuous detection on the magnetic performance of the wave-absorbing material is achieved.

Description

technical field [0001] The invention relates to the technical field of wave absorbing material detection, in particular to a testing device for the magnetic permeability of wave absorbing materials. Background technique [0002] The absorbing material can absorb the electromagnetic waves incident on its surface and convert it into heat energy or other forms of energy, which can effectively solve the problems of electromagnetic interference and electromagnetic radiation pollution. The magnetic permeability is expressed in a complex number form, μ=μ'-jμ", the real part of the complex permeability μ' is a value indicating the ease of magnetic flux gathering, and it has the effect of extending the communication distance after being attached to the antenna. The part μ" is the magnetic loss term, that is, the value that represents the magnitude of the absorption effect. The imaginary part absorbs other useless electromagnetic waves and converts them into heat energy, thereby achie...

Claims

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Application Information

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IPC IPC(8): G01R33/12G01R27/26G01B11/06
CPCG01R33/1223G01R27/26G01B11/06
Inventor 刘晓倩田城华张松胡庆江
Owner ZHEJIANG YUANBANG MATERIAL TECH
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