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相关概念视频

Wedges01:24

Wedges

1.6K
A wedge is a simple machine that serves various purposes, such as adjusting the elevation of structural or mechanical parts, providing stability for heavy objects, and splitting a body into two parts. This versatile tool can amplify an applied force, making it easier to manipulate large or heavy objects.
Consider using a wedge to lift a heavy slab. Here, the wedge functions by converting the applied force into a much larger force directed almost perpendicular to the initial force. This...
1.6K
Prestressed Concrete01:20

Prestressed Concrete

713
Prestressed concrete is a construction technique designed to enhance the strength and durability of concrete structures. This method involves the application of a pre-set tension to high-strength steel strands used as reinforcement before the concrete is subjected to its working loads. The primary aim of prestressing is to place the concrete in a state of compression, in order to counteract the tensile forces it will experience in service. This pre-compression helps prevent crack formation in...
713
Non-destructive Tests for Concrete Strength01:12

Non-destructive Tests for Concrete Strength

465
The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
465
Elastic Strain Energy for Shearing Stresses01:20

Elastic Strain Energy for Shearing Stresses

467
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...
467
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
Flexural Stress01:16

Flexural Stress

666
When analyzing bending in symmetric members, it's crucial to understand how stresses distribute when subjected to bending moments. This stress distribution is effectively described by applying fundamental mechanics and material science principles, particularly Hooke's Law for elastic materials.
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to its distance...
666

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相关实验视频

Updated: Jan 10, 2026

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

Published on: September 29, 2019

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使用轻量级计算框架进行高效的预应力形缺陷检测.

Qingyu Yao1, Yulong Guo2, Weidong Liu3

  • 1Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou 450003, China.

Sensors (Basel, Switzerland)
|November 27, 2025
PubMed
概括
此摘要是机器生成的。

一个新的FasterNET-YOLOv5框架准确地检测预应力的缺陷,提高了施工中的安全性和效率. 这种人工智能驱动的方法为关键基础设施组件提供了更快,更可靠的检查.

关键词:
快速的网络-YOLOv5检测 检测 检测 检测 检测效率 效率 效率 效率 效率 效率 效率在压力前的压力.强壮的 坚固的 坚固的子 子 子 子

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Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
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Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

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Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
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相关实验视频

Last Updated: Jan 10, 2026

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

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Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
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Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

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Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
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Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method

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科学领域:

  • 计算工程是指计算机工程.
  • 人工智能在制造业中的应用
  • 非破坏性测试方法

背景情况:

  • 预应力是基础设施中的重要组成部分,但线程缺陷会带来重大安全风险并增加维护成本.
  • 目前用于形缺陷的手动检查方法是低效的,不一致的,并与不同的条件作斗争.
  • 关于提高这些关键组件的自动化检查效率的研究是有限的.

研究的目的:

  • 开发一个轻量级和高效的深度学习框架,用于准确检测预应力的缺陷.
  • 提高工业环境中自动化检查系统的稳定性和实时适用性.
  • 弥合基于人工智能的缺陷检测和工程级质量控制可靠性之间的差距.

主要方法:

  • 实施一个轻量级的FasterNET-YOLOv5深度学习框架,专门用于漏洞检测.
  • 使用精度,回忆和mAP@0.5指标评估检测性能.
  • 在各种照明条件下进行强度测试,特别是评估白色照明背景.
  • 与基于机械模型的反向方法集成,用于连接机器视觉检测.

主要成果:

  • FasterNET-YOLOv5框架实现了高检测精度,精度为96.3%,回忆率为96.2%和96.5 mAP@0.5.5.
  • 与现有方法相比,实现了18%更快的端到端推断速度.
  • 确定白色照明是检测不完整的线程和划痕的最佳选择.
  • 通过基于机械模型的反向方法证明了机器视觉检测的成功联系.

结论:

  • 拟议的FasterNET-YOLOv5框架为预应力形缺陷检测提供了准确,强大和高效的解决方案.
  • 该系统的速度和准确性使其能够在便携式设备上部署,以实时进行工业检查.
  • 该研究突出了线程和加工元件自动化质量控制中更广泛应用的潜力.
  • 这项工作通过将深度学习与实际工程要求相结合,推进了计算检查.