灵活的三维应力传感器用于嵌入式监测固体火箭推进剂
Yaoguang Shi1, Xiaozhou Lü1, Kai Ren1
1School of Aerospace Science and Technology, Xidian University, Xi'an 710071, China.
Micromachines
|January 28, 2026
概括
一个新的灵活的3D应力传感器 (FSS) 可在现场监测固体火箭发动机 (SRM) 推进剂的健康状况. 这种新型传感器可以准确地检测推进剂内的多轴应力差异,这对SRM的运行安全至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
- 传感器技术 传感器技术
背景情况:
- 固体火箭发动机 (SRM) 对于太空探索至关重要,因为它们的可靠性和高推力.
- 在整个生命周期中监测SRM推进剂的健康状况对于运营安全至关重要.
- 现有的方法缺乏在现场检测推进剂内的三维应力.
研究的目的:
- 引入一种新的灵活的三维应力传感器 (FSS),用于现场检测SRM中的多轴应力.
- 设计,建模,制造和描述基于液体金属的应力感应元件.
- 验证FSS在模拟推进剂环境中检测应力差异的能力.
主要方法:
- 一个可变横截面的液体金属压力传感元件的数值建模和有限元分析.
- 使用模具造和液体金属注射制造传感元件原型.
- 整合多个传感元件和封装以创建FSS,然后通过模拟推进剂实验进行表征.
主要成果:
- 制造的传感元件原型在300kPa时显示了1.5%/kPa的灵敏系数,最大hysteresis误差为3.98%和稳定性误差为0.17%.
- 开发的FSS在嵌入模拟推进剂时成功检测到多轴应力差异.
- 实验结果与模拟预测有很好的一致性.
结论:
- 新型灵活的3D应力传感器 (FSS) 有效地在现场监测固体火箭发动机中的推进剂应力.
- FSS技术为增强SRM健康监测和运营安全提供了一个有前途的解决方案.
- 这一进步有助于利用SRM的太空探索任务的可靠性和安全性.
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