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相关概念视频

Detection of Black Holes01:10

Detection of Black Holes

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Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
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A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
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A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation
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早期螺栓松动检测方法基于数字图像相关性.

Yinyin Li1, Yusen Wu1, Kang Gao1

  • 1School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China.

Sensors (Basel, Switzerland)
|August 29, 2024
PubMed
概括
此摘要是机器生成的。

早期检测螺栓松动对于设备安全至关重要. 一种新的数字图像相关法准确地预测了螺栓轴向力,防止了高压管道分流器的故障.

关键词:
平均应变株的平均值.轴承负载的轴承负载是指轴承负载.数字图像相关性相关性数字图像相关性早期的螺栓松动评估评估

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科学领域:

  • 机械工程 机械工程
  • 材料科学 材料科学 材料科学
  • 结构健康监测 结构健康监测

背景情况:

  • 螺栓松动严重影响设备的准确性,稳定性和安全性.
  • 及时检测对于可靠性,性能和使用寿命至关重要.
  • 像张力计和超声波这样的现有方法都有局限性.

研究的目的:

  • 为高压管道组件提出早期螺栓松动检测方法.
  • 为了能够及早评估螺栓松动,并防止泄漏事故.
  • 为结构性健康监测提供一种新的方法.

主要方法:

  • 建立一个拉力试验模型,将平均应变与轴向力联系起来.
  • 在运行条件下捕获具有随机斑点的螺栓的工业摄像头图像.
  • 使用数字图像相关性来计算螺栓头侧的平均应变.

主要成果:

  • 在平均应变和轴向力之间观察到强烈的线性关系.
  • 该方法在操作条件下准确预测螺栓轴向力.
  • 可以有效地评估早期螺栓松动的情况.

结论:

  • 数字图像相关法提供了准确的螺栓轴力预测.
  • 这种技术为在高压分流器中早期检测螺栓松动提供了一种新方法.
  • 它增强了结构性健康监测能力.