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A Scale Composite Material Preparation Method Based on Optimal Design of Electromagnetic Parameters

A technology of electromagnetic parameters and composite materials, applied in the direction of electrical digital data processing, calculation, special data processing applications, etc., can solve problems such as increasing the difficulty of preparation

Active Publication Date: 2018-08-17
SHANGHAI RADIO EQUIP RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In engineering, it is very difficult to keep the electromagnetic parameters constant, especially when the material has both electric loss and magnetic loss, which further increases the difficulty of preparation

Method used

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  • A Scale Composite Material Preparation Method Based on Optimal Design of Electromagnetic Parameters
  • A Scale Composite Material Preparation Method Based on Optimal Design of Electromagnetic Parameters
  • A Scale Composite Material Preparation Method Based on Optimal Design of Electromagnetic Parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Take carbonyl iron powder and epoxy resin mixed preparation as an example.

[0038] Firstly, according to the electromagnetic parameters of the original frequency band composite material, the reflection coefficients of its horizontal polarization and vertical polarization are calculated, see figure 1 and figure 2 Shown in solid line.

[0039] figure 1 It is a metal substrate, the thickness of the dielectric is 1mm, the solid line is the original 4GHz frequency, the dielectric constant is 22.04+1.32i, the magnetic permeability is 3.76+2.52i; the dotted line is the scaled 8GHz frequency, the dielectric constant 11.6+0.69i, The vertical polarization reflection coefficient with the magnetic permeability of 1.8+1.21i varies with the pitch angle. figure 2 With figure 1 The curve of the horizontal polarization reflection coefficient changing with the pitch angle under the same conditions.

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Abstract

The invention discloses an electromagnetic parameter optimization design-based scaled composite material preparation method, which comprises the following steps: (1) calculating a reflection coefficient of an original material; (2) carrying out electromagnetic parameter tests on mixed materials, namely carrying out electromagnetic parameter tests on the mixed materials at different proportions according to the scale requirements; (3) establishing an electromagnetic parameter library of the mixed materials at different proportions, namely, combining electromagnetic parameter test results with an effective medium theory and carrying out correction to obtain the electromagnetic parameter library; and (4) optimizing the electromagnetic parameter, namely carrying out optimization on the mixed materials according to the reflection coefficient of the original band material, and obtaining a proportion scheme of the scaled composite material through the electromagnetic parameter library. According to the electromagnetic parameter optimization design-based scaled composite material preparation method disclosed by the invention, the mixed materials which meet the scale relationship and are realizable in engineering are obtained through an electromagnetic parameter optimization design; the accuracy requirement of the scale test is met; and the electromagnetic parameter optimization design-based scaled composite material preparation method is an effective composite material electromagnetic scale test scheme.

Description

technical field [0001] The invention relates to a compound material compounding method in radar target characteristic testing technology, in particular to a scaled compound material compounding method based on electromagnetic parameter optimization design. Background technique [0002] With the emergence of a large number of composite aircraft, ships and vehicles, weapon systems urgently need to obtain target characteristic information required for target detection, identification and tracking. Therefore, more and more attention has been paid to the testing technology of composite target characteristics. However, the traditional full-scale test of target characteristics is expensive in model making and limited by the limitations of the test site; the scale test has a bottleneck in the electromagnetic scale structure of composite materials, and only the electromagnetic scattering data of the all-metal target can be obtained. Compared with the real target, the error is large, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 高伟廖意许勇刚袁黎明
Owner SHANGHAI RADIO EQUIP RES INST
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