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相关概念视频

Measurements of Strain01:27

Measurements of Strain

639
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain...
639
Design Example: Strain Gauge Bridge or Wheatstone Bridge01:15

Design Example: Strain Gauge Bridge or Wheatstone Bridge

380
The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...
380
Stress-Strain Diagram01:10

Stress-Strain Diagram

627
A stress-strain diagram is a crucial tool that graphically displays a material's mechanical characteristics. This diagram is derived from a tensile test performed on a carefully prepared cylindrical specimen. The specimen has two gauge marks inscribed on its central part, and the distance between these marks is known as the gauge length. The cylindrical specimen is placed in a testing machine, which applies an increasing centric load. As this load grows, so does the gauge length. This...
627

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相关实验视频

Updated: Jun 18, 2025

Production of a Strain-Measuring Device with an Improved 3D Printer
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通过界面设计工程设计的高度坚固和自粘软张力计.

Jianhao Li1, Qingqing Dai1, Ze Wang1

  • 1Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022, China.

Advanced materials (Deerfield Beach, Fla.)
|July 31, 2024
PubMed
概括

研究人员开发了一种强大的软应变计,灵感来自于子. 这种多层软张力计 (MSSG) 为生命体和机器监测提供了卓越的电气性能和机械耐用性.

关键词:
界面设计工程 界面设计工程多层软张力计多层软张力计.坚固性 坚固性 坚固性切口感应器 (slit sensilla) 是一个感应器.无线应变监测系统无线应变监测系统

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科学领域:

  • 材料科学 材料科学 材料科学
  • 生物模拟学是一种生物模拟学.
  • 传感器技术 传感器技术

背景情况:

  • 软张力计对于监测生命体征和机器状况至关重要.
  • 在软应变仪中实现高性能和长期机械/电力稳固性仍然是一个挑战.
  • 多层设计中异质材料之间的弱接口连接限制了传感器的耐用性.

研究的目的:

  • 为了设计一个强大的软张力计,提高性能和耐用性.
  • 为了解决多层软张力计中弱接口连接的局限性.
  • 开发一个仿生界面,灵感来自于子的隙感觉.

主要方法:

  • 接口设计工程灵感来自于子裂感觉.
  • 开发了一种多层软应变仪 (MSSG),使用坚固的接口互连.
  • 制造和特征的MSSG的电气和机械性能.

主要成果:

  • 该MSSG实现了超高的应变灵敏度 (>10^5) 和低的检测极限 (8.3μm).
  • 证明了异常的周期稳定性 (> 63000 个周期) 和频率分辨率 (< 0.1 Hz).
  • 工程界面增强了异质集成,使MSSG能够承受各种压力.
  • 基于MSSG的无线应变监测系统成功开发.

结论:

  • 接口设计工程是实现协同效应超高电性能和软应变仪的机械强度的关键.
  • 生物模拟MSSG显示了对生命体征和机器状况应用的长期,可靠的监测的巨大潜力.
  • 开发的系统可以在复杂的动态表面上进行先进的应变监测,包括人类生理信号和工业机械.