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在符合负载天线系统中对机械负载的共振频率响应
Shouxun Lu1, Kelvin J Nicholson2, Joel Patniotis2
1Department of Mechanical & Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
Sensors (Basel, Switzerland)
|March 17, 2025
概括
机械负荷对符合负载天线结构 (CLAS) 的影响. 损坏增加了基质的电容性,降低了共振频率,特别是在拉伸应力下. 这影响了CLAS的可靠性和使用寿命预测.
科学领域:
- 电磁学 电磁学 电磁学 电磁学
- 材料科学 材料科学 材料科学
- 结构力学 结构力学
背景情况:
- 合规承载天线结构 (CLAS) 将天线集成到结构部件中.
- 了解机械应力对天线性能的影响对于可靠性至关重要.
研究的目的:
- 研究机械负荷如何影响CLAS的电磁共振频率.
- 为了区分半静态拉力负荷和循环疲劳对CLAS性能的影响.
主要方法:
- 使用了六层[0/90]玻璃纤维增强聚合物 (GFRP) 作为CLAS基材.
- 进行了准静态单轴拉伸试验和循环疲劳试验.
- 采用可拆卸天线补丁 (RAP) 和表面安装天线补丁 (SMAP) 配置.
主要成果:
- 准静态拉力负荷增加了基板的电容性,由于损坏,共振频率下降.
- 循环疲劳在RAP配置中显示出一致的损伤频率相关性.
- 由于损坏和延长效应的结合,SMAP配置表现出复杂的频率转移.
- 在显著的近静态延伸下,配置影响了共振频率.
结论:
- 由机械负荷驱动的基板电容性变化是CLAS中共振频率转移的关键.
- 这些发现对于预测负载天线系统的可靠性和使用寿命至关重要.
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