Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Self-Locking Screw01:16

Self-Locking Screw

2.4K
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.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.
2.4K
Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

480
The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
480
Frictional Forces on Screws01:17

Frictional Forces on Screws

1.5K
Screws are characterized by a helical ridge known as a thread wrapped around a cylindrical shaft. They are commonly used as fasteners to hold objects together or to transmit power and motion in machines. One type of screw that is particularly useful for transmitting power is the square-threaded screw.
A jack with a square-threaded screw is a mechanical device used to lift heavy loads by applying a force at its handle. When the force is applied, the screw turns, raising the load. The screw can...
1.5K
Screw: Problem Solving01:21

Screw: Problem Solving

676
In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...
676
Stress Concentrations in Circular Shafts01:18

Stress Concentrations in Circular Shafts

519
Consider the elastic torsion formula, which applies to a circular shaft with a consistent cross-section. This formula assumes that the shaft's ends are loaded with rigid plates firmly attached. However, in many cases, torques are applied to the shaft through mechanisms like flange couplings or gears, which are connected by keys inserted into keyways. This application method modifies the stress distribution near the point of torque application, causing it to deviate from the distributions...
519
Bearings: Problem Solving01:24

Bearings: Problem Solving

466
Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
466

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

MicroRNA-26a/b and their host genes synergistically regulate triacylglycerol synthesis by targeting the INSIG1 gene.

RNA biology·2016
Same author

CD36 regulates lipopolysaccharide-induced signaling pathways and mediates the internalization of Escherichia coli in cooperation with TLR4 in goat mammary gland epithelial cells.

Scientific reports·2016
Same author

A recombinant rabies virus carrying GFP between N and P affects viral transcription in vitro.

Virus genes·2016
Same author

Epidemiology, Seasonality and Treatment of Hospitalized Adults and Adolescents with Influenza in Jingzhou, China, 2010-2012.

PloS one·2016
Same author

Effect of aging on bioaccessibility of arsenic and lead in soils.

Chemosphere·2016
Same author

[Inhibitory effect of cabozantinib against Listeria monocytogenes invasion in Caco-2 cells in vitro].

Nan fang yi ke da xue xue bao = Journal of Southern Medical University·2016

相关实验视频

Updated: Jan 10, 2026

Crack Monitoring in Resonance Fatigue Testing of Welded Specimens Using Digital Image Correlation
05:30

Crack Monitoring in Resonance Fatigue Testing of Welded Specimens Using Digital Image Correlation

Published on: September 29, 2019

8.6K

基于快速响应代码的边缘节点的反松动螺栓松动诊断方法.

Jun Luo1, Kaili Li1, BaoYa Shi1

  • 1School of Civil and Hydraulic Engineering, Chongqing University of Science and Technology, Chongqing, 401331, China.

Scientific reports
|November 20, 2025
PubMed
概括

一种新方法使用快速响应 (QR) 代码来准确检测连接器中螺栓松动的情况. 该技术纠正图像扭曲和轨道旋转,以加强结构安全监控.

关键词:
防止松动的螺栓.边缘节点的边缘节点松动检测 松动检测 松动检测快速响应代码是一个快速响应代码.基于视觉的技术 基于视觉的技术

更多相关视频

Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars
10:24

Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars

Published on: November 1, 2018

7.0K
Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

740

相关实验视频

Last Updated: Jan 10, 2026

Crack Monitoring in Resonance Fatigue Testing of Welded Specimens Using Digital Image Correlation
05:30

Crack Monitoring in Resonance Fatigue Testing of Welded Specimens Using Digital Image Correlation

Published on: September 29, 2019

8.6K
Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars
10:24

Applicability Analysis of Assessment Methods for Morphological Parameters of Corroded Steel Bars

Published on: November 1, 2018

7.0K
Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads
07:58

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

Published on: July 25, 2025

740

科学领域:

  • 机械工程 机械工程
  • 结构健康监测 结构健康监测
  • 计算机视觉 计算机视觉

背景情况:

  • 边缘连接在工程中至关重要,但容易松动螺栓,危及安全.
  • 基于视觉的螺栓松动检测方法面临着视角扭曲和历史数据的挑战.
  • 现有的方法很难提供可靠的定量松动角度,并跟踪随时间的变化.

研究的目的:

  • 开发一种使用快速响应 (QR) 代码来诊断抗松动螺栓松动的新方法.
  • 解决目前基于视觉的技术的局限性,特别是视角扭曲和缺乏历史数据.
  • 建立一个强大的系统,用于准确检测螺栓松动角度和结构安全评估.

主要方法:

  • 设计一个带有三个寻找模式的QR码,并将其贴在螺栓端面上.
  • 采用基于同位素的视角校正,使用QR码边缘交叉点进行图像校正.
  • 使用QR码寻找模式将图像旋转到统一的参考状态,减轻相机和螺栓/螺母旋转效应.
  • 建立基于坚果旋转角度变化的松动诊断方法.

主要成果:

  • 提出的方法有效地纠正了螺栓图像中的视角扭曲.
  • 它显著减少了相机位置偏差和螺丝和螺母同时旋转的影响.
  • 该系统准确地检测反松螺栓的松角度,通过实验验证进行验证.

结论:

  • 这种基于QR码的新方法提供了一种有效的解决方案,用于检测边缘连接中的螺栓松动.
  • 这种方法通过克服关键限制,提高了基于视觉的监控系统的可靠性和准确性.
  • 开发的技术通过精确的螺栓松动诊断,有助于提高结构安全和维护.