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相关概念视频

Temperature Dependent Deformation01:12

Temperature Dependent Deformation

134
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
134
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

141
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
141

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相关实验视频

Updated: May 20, 2025

Micro/Nano-scale Strain Distribution Measurement from Sampling Moir&#233; Fringes
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一个应变传感器用于多方向变形检测,通过滚动图案的垂直对齐的碳纳米管来实现.

Yongsheng Yang1, Qinqi Ren1, Zixuan Zhang1

  • 1School of Electronic and Computer Engineering, Peking University, Shenzhen 518055, China.

ACS sensors
|April 4, 2025
PubMed
概括

研究人员开发了一种新的灵活传感器,使用碳纳米管用于多方向运动检测. 这一突破使先进的人机交互和健康监测应用程序成为可能.

关键词:
碳纳米管的使用方法卫生监测健康监测多方向运动检测检测.制过程中的滚动过程.可伸缩的应变传感器可穿戴式传感器传感器

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相关实验视频

Last Updated: May 20, 2025

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 传感器技术 传感器技术

背景情况:

  • 灵活和可伸缩的传感器对于人机交互,运动捕捉和健康监测至关重要.
  • 现有的传感器往往难以检测多方向变形,限制了现实世界的应用.

研究的目的:

  • 开发一种能够检测多方向变形的单一传感器.
  • 为制造这种传感器创造一种简单而高效的方法.

主要方法:

  • 使用"一步"滚动工艺将垂直对齐的碳纳米管 (CNT) 转移到柔性Ecoflex基板上.
  • 通过控制制过程和CNT图案设计,在不同方向设计出不同的导电路径.

主要成果:

  • 在传感器中实现了敏感的方向依赖.
  • 演示了广泛的操作范围 (0-120%),高灵敏度 (GF = 126.6) 和快速响应时间 (64 ms).
  • 在40%的应变下,经过4000多个循环的良好稳定性得到证实.

结论:

  • 开发的传感器有效地解决了多向变形传感的挑战.
  • 它的卓越性能和稳定性显示了人机交互,智能机器人和现场健康监测的巨大潜力.