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相关概念视频

Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

479
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
479
Symmetric Member in Bending01:07

Symmetric Member in Bending

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In the study of the mechanics of materials, analyzing the behavior of prismatic members under opposing couples is crucial for understanding internal stress distributions, which are essential for structural design. When subjected to couples, a prismatic member experiences internal forces that maintain equilibrium. A couple, characterized by two equal and opposite forces, creates a moment but no resultant force. The internal forces at any section cut of the member must balance these external...
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Ultralow Dielectric Loss with Excellent Thermal Stability in BiScO<sub>3</sub>-PbTiO<sub>3</sub> Piezoelectric Ceramics via Phase Structure Regulation.

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Investigating the Potential of Singly Curved Thin Piezoelectric Transducers for Energy Harvesting and Structural Health Monitoring
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一个在对称剪曲合模式下运行的高温压电加速度计.

Wen Liu1,2, Bing Wang1, Shaotong Gong2

  • 1Institute for Advanced Study, Shenzhen University, Shenzhen 518060, China.

ACS applied materials & interfaces
|January 7, 2026
PubMed
概括

这项研究引入了使用BiScO3-PbTiO3陶环的高温压电加速度计. 这种新的设计在广泛的温度范围内实现了高灵敏度和稳定的性能,非常适合苛刻的环境.

关键词:
在 BiScO3−PbTiO3 陶环中.高灵敏度的高灵敏度的高灵敏度在高温应用中使用.压电加速度计是一种压电加速度计.剪切曲合器 曲合器 剪切曲合器

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科学领域:

  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程
  • 电气工程 电气工程

背景情况:

  • 压电加速度计对于测量振动至关重要.
  • 高温应用需要强大的传感器,具有稳定的性能.
  • 现有的剪切型加速度计往往缺乏足够的灵敏度和热稳定性.

研究的目的:

  • 提出一种新的高温压电加速度计设计.
  • 在灵敏度,热稳定性和线性方面调查其性能.
  • 探索其在航空航天,能源和核工程应用中的潜力.

主要方法:

  • 使用了半径极化BiScO3-PbTiO3 (BS-PT) 陶环.
  • 在对称剪切曲合器振动模式下操作设备.
  • 进行了热循环测试 (室温为260°C) 和强制振动测试.

主要成果:

  • 在室温下达到22.8 pC/g的高灵敏度,约3倍于传统的剪切型加速度计.
  • 在热循环和振动测试后,表现出稳定的性能,灵敏度为14 pC/g.
  • 在广泛的频率范围内表现出线性响应.

结论:

  • 建议的加速度计具有高灵敏度和出色的热可靠性.
  • 它的坚固设计适用于恶劣的高温环境.
  • 进一步开发使用更高基里温度的材料可以扩展运行限制.