场敏感型自适应电磁防护材料的测试装置与方法研究

发布时间：2018-11-18 12:53

【摘要】：场敏感型环境自适应电磁防护材料属于新材料,当外部电磁场超过某临界场强的时候,该材料可以在微纳秒时间内即刻发生绝缘/导电相变现象,即平时为绝缘体的材料迅速变为高导电的类金属材料,由于该材料发生相变的临界场强阈值较高,传统的材料静态测试方法以及低压动态测试都无法满足测试需求。根据该材料的工作机理,设计了一种可以产生高场强的动态测试系统,通过仿真和电磁场理论分析了该测试夹具的可行性,确定了其具体参数,进而研制成功了一种用于该材料的动态测试夹具,确定了其相应的测试方法,通过试验发现,该夹具可以对突变后类金属材料的等效电阻为1 kΩ以下、1μs以下的响应时间、1 MV/m以下的临界场强进行电阻率、响应时间和临界场强阈值的测试。
[Abstract]:The field sensitive environment adaptive electromagnetic protection material is a new material. When the external electromagnetic field exceeds a certain critical field strength, the insulation / conductive phase transition can occur immediately in the micronanosecond time. That is to say, the insulator material quickly becomes a kind of metal-like material with high conductivity. Because of the high threshold of critical field strength of the material, the traditional static testing method and the low voltage dynamic test method can not meet the test requirements. According to the working mechanism of the material, a dynamic testing system which can produce high field strength is designed. The feasibility of the test fixture is analyzed by simulation and electromagnetic field theory, and its specific parameters are determined. A dynamic testing fixture for the material is developed, and the corresponding testing method is determined. It is found that the equivalent resistance of the fixture is less than 1 k 惟 and less than 1 渭 s, and the response time is less than 1 渭 s. 1 the resistivity, response time and threshold of critical field intensity below MV/m are measured.
【作者单位】：军械工程学院电磁环境效应国家级重点实验室;
【基金】：探索一代项目基金(71314110)
【分类号】：TB302

【参考文献】