基于多参数声辐射分析的乘客绳索轴承的健康状况评估
Junjiao Zhang1, Yongna Shen1, Zhanwen Wu1
1Key Laboratory of Nondestructive Testing and Evaluation, China Special Equipment Inspection & Research Institute, State Administration for Market Regulation, Beijing 100029, China.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
声波排放 (AE) 监测可以有效地检测绳索路的滚动轴承缺陷,优于振动分析. 这种方法可以通过在明显损坏发生之前识别磨损来实现预测性维护.
科学领域:
- 机械工程 机械工程
- 状态监控 状态监控
- 声波发射技术 声波发射技术
背景情况:
- 乘客绳索系统中的滚动轴承对于安全至关重要.
- 传统的状态监测方法,如振动分析,具有局限性,特别是对于低速轴承.
- 早期检测轴承缺陷对于防止灾难性故障和确保操作安全至关重要.
研究的目的:
- 开发和验证一个基于声辐射 (AE) 的优化诊断框架,用于在乘客绳索系统中监测滚动轴承的状况.
- 为了比较不同AE传感器和检测缺陷的参数的有效性.
- 使用AE数据引入一种新的AI模型,用于使用AE数据进行自动化磨损检测.
主要方法:
- 控制的实验室实验和实地验证在操作的绳索公路上.
- 使用共振VS150-RIC和宽带传感器来采集声辐射数据.
- 分析了RMS值和特征频率用于缺陷识别.
- 开发并应用Paligemma大型语言模型 (LLM) 来自动检测AE时间域图像的磨损.
主要成果:
- 与宽带传感器相比,共振VS150-RIC传感器在检测内部赛道缺陷方面表现出卓越的性能.
- RMS参数被证明是一个可靠的指标,显示有缺陷轴承的周期性峰值和升值.
- 现场测试证实,不断升级的RMS值在可见轴承损坏之前,使预测性维护成为可能.
- 帕利杰玛LLM成功地使用AE时域图像自动化了磨损检测.
结论:
- 声波发射技术为对安全关键的缆车系统中低速轴承的监控提供了科学验证的,优质的对振动分析的替代方案.
- 开发的AE诊断框架和AI模型提高了乘客绳索铁路运行的可靠性和安全性.
- 基于AE监控,可以有效地实施预测性维护策略,减少停机时间和防止故障.
相关概念视频
Bearings: Problem Solving
328
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...
328
Journal Bearings
774
Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
To better understand the concept of journal bearings, consider a rope winch with dry or...
774
Stress Concentrations in Circular Shafts
238
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...
238
Stresses in a Shaft
510
The shaft PQ is subjected to a twisting force when equal and opposite torques are applied on either side. A section that cuts perpendicular to the shaft's axis at any arbitrary point R is examined to understand this. When the free-body diagram of the QR segment is analyzed, it reveals the shearing forces exerted by the PR portion onto the QR segment as the shaft experiences twisting.
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
Applying equilibrium conditions to the QR segment establishes that the internal shearing forces within the...
510
Pivot Bearings
1.5K
In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
1.5K
Bearing Stress
1.1K
Bearing stress refers to the contact pressure between two separate bodies. To visualize this, imagine a bolt thrust through a plate. The bolt applies a force to the plate, which exerts an equal but opposite force back onto the bolt. This force isn't just a singular entity but a compilation of numerous smaller forces distributed across the contact surface between the bolt and the plate.
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
1.1K


