Coaxial testing device-based field sensitive type electromagnetic pulse protection material testing method
A technology of testing device and testing method, which is applied in the direction of material analysis, measuring device, and analyzing materials through electromagnetic means, can solve the problems that are not suitable for phase change performance testing of field-sensitive electromagnetic protection materials, and achieve good performance in the frequency domain Effect
Inactive Publication Date: 2017-02-22
ARMY ENG UNIV OF PLA
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a method for testing field-sensitive electromagnetic pulse protection materials based on a coaxial test device. By using this method to test the material to be tested, the existing method is not suitable for field-sensitive electromagnetic protection. Questions about material phase change performance testing
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[0024] The technical solutions in the present invention will be described in detail below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0026] Such as figure 1 As shown, the present invention discloses a method for testing field-...
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Abstract
The invention discloses a coaxial testing device-based field sensitive type electromagnetic pulse protection material testing method. The coaxial testing device-based field sensitive type electromagnetic pulse protection material testing method comprises the following steps: firstly, placing a test material in a coaxial testing device which is subjected to insulating design; secondly, applying field intensity to the test material in the coaxial testing device by using a high-frequency noise simulator; thirdly, observing the waveform of an oscilloscope, and judging phase change properties of the material according to the change of the waveform to obtain a phase change field intensity threshold value and response time of the material so as to finish the test. The high-frequency noise simulator provides square signal input for a testing system; in order to avoid material surface discharge caused by the field intensity, the testing system adopts a coaxial clamp which is subjected to the insulating design; a voltage value of an output square wave reaches kilovolt, and the voltage withstand range of the oscilloscope is only dozens of volt, so that a corresponding parameter attenuator is required to be connected between the testing device and the oscilloscope; finally, the oscilloscope displays an output waveform, and the phase change field intensity threshold value and the response time of a tested material are determined by observing the waveform of the oscilloscope.
Description
technical field [0001] The invention relates to the technical field of electromagnetic compatibility experiments, in particular to a method for testing field-sensitive electromagnetic pulse protection materials based on a coaxial testing device. Background technique [0002] The ideal field-sensitive environment-adaptive electromagnetic pulse protection material is an insulating material in the case of low field strength, and has no shielding effect on electromagnetic waves. When it is disturbed or attacked by an external strong electromagnetic pulse, the external electromagnetic field suddenly increases significantly and exceeds a certain critical value. When the field is strong, due to the unique electrochemical and energy structure characteristics of the material, it can sense the changes in the external electromagnetic environment, and the insulating / conducting phase transition phenomenon can occur within micro-nanoseconds, and the conductivity increases by 10 2 ~10 5 T...
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IPC IPC(8): G01N27/00
CPCG01N27/00
Inventor 王赟赵敏范丽思王庆国周星王妍成伟曲兆明张希军王小亮
Owner ARMY ENG UNIV OF PLA