Results 1 to 10 of about 399 (125)
Kongjian kexue xuebao, 2023 利用有限元分析方法开展大型磁屏蔽室的仿真分析，完成了高精度矢量磁力仪地面定标用大型磁屏蔽室的建模和性能仿真计算，从屏蔽效能、开口影响及内部磁场均匀度等方面对磁屏蔽室仿真计算和实测结果进行对比。结果表明，磁屏蔽空间内部中心区域的剩磁实测数值与仿真结果一致性较好，剩磁分布趋势基本一致，证明有限元分析方法在磁屏蔽室屏蔽性能定量分析的可行性。通过有限元分析方法，能够实现磁屏蔽室开口剩磁影响的定量计算，为磁屏蔽室门及通风孔设计提供依据；同时可以对内部磁场均匀区大小、残余梯度进行验证 ...
李 志宏 +3 more
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Coating for fabrics with nano tube-panis and the properties of conducting and shielding microwave [PDF]
, 2016 2005-2006 > Academic research: refereed > Publication in refereed journalVersion of ...
Hu, JY, Li, Y, Wang, JM, Zhu, CC
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, 2020 为提高碳纤维导电导磁性能，采用水热-热解法制备了Co3O4/Fe2O3磁性杂化碳纤维，并利用XRD、SEM-EDS、TEM分别对杂化纤维表面的结构、形貌和尺寸等进行了表征。并以此纤维与环氧树脂复合，模压制备了Co3O4/Fe2O3杂化碳纤维复合材料，研究了复合材料磁导率、电导率以及复合材料的屏蔽效能。研究表明，按照文中方法碳纤维表面成功生长了Co3O4/Fe2O3磁性纳米颗粒，所制备的防护材料与未处理案例对比，磁导率明显得到提升，其复合材料的低频屏蔽效能达到35dB（150kHz ...
伟 李 +4 more
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Study on preparation and electromagnetic shielding properties of silver-coated ferrosilicochrome powder [PDF]
ObjectiveThis study focuses on the preparation and properties of high-performance electromagnetic shielding materials for electronic equipment in marine environments.
Junzhi WU +4 more
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Gaoya dianqi, 2023 文中基于电磁场基本理论，建立了开关柜工频磁场数学模型，采用有限元法对开关柜的磁感应强度进行了计算，分析了壳体、壳体厚度和磁导率等对开关柜磁感应强度分布和屏蔽效能的影响，并研究了开关柜柜外母排长度对磁感应强度分布的影响，结果表明：开关柜外壳和隔板对工频磁场具有明显的屏蔽作用，增大壳体磁导率和厚度均可提高开关柜整体的屏蔽效能，但当壳体磁导率大于1 000和厚度超过3 mm时，屏蔽效能增长幅度较小；柜外母排长度对开关柜周围磁场分布影响较小，但对柜体顶部磁场分布的影响较大 ...
王岩 +4 more
doaj
Physical simulation on directional shielding of receiving coil in borehole transient electromagnetic method [PDF]
Borehole transient electromagnetic(BTEM)scanning detection method uses the advanced exploration boreholes in the roadway to scan and detect the hidden geological anomalies outside the borehole wall by rotating the transceiver coil inside the borehole ...
Chengtao XIN +3 more
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Research progress on carbide-based composites for electromagnetic wave absorption applications [PDF]
With continuously evolving wireless communication technologies, the technological revolution marked by advances in artificial intelligence, the Internet of Things, and the metaverse is fundamentally reshaping our society, making it more convenient ...
Fengmei CHEN, Guanglei WU, Ru GAO
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan +9 more
wiley +1 more source
Dianci bileiqi, 2022 为了降低变电站巡检机器人磁耦合谐振式无线充电系统正常工作时对附近工作人员安全造成的危害，将高频辐射降低到国标标准限值内，笔者提出了一种复合结构式铝板屏蔽方案，采用有限元方法仿真计算巡检机器人无线充电系统电磁辐射，计算尺寸、层数对屏蔽板屏蔽效果的影响，并对比分析六种复合结构式屏蔽装置的屏蔽效果。结果表明：当增大屏蔽板尺寸和增加屏蔽板层数时，无线充电对外辐射磁场强度出现明显下降；采用复合结构式屏蔽板能够将无线充电系统的对外辐射磁场幅值基本降低到国标限值以内。
刘乐 +5 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT With the rapid growth demand for advanced integrated electronic systems, lightweight flexible electromagnetic interference (EMI) shielding films integrated with functional properties, such as excellent mechanical properties and self‐healing capability, are a research focus in high‐tech functional materials. Herein, a sandwich‐structured aramid
Dan Guo +9 more
wiley +1 more source