基于频响函数分析的旋转叶片故障实时检测

IF 12.2 1区 工程技术 Q1 MECHANICS
Ravi Prakash Babu Kocharla, M. Kolli, Muralimohan Cheepu
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引用次数: 4

摘要

涡轮机器在不理想的条件下运行时,旋转叶片会出现故障。旋转叶片的故障有疲劳裂纹、机械松动、不平衡、不对中等。因此,对叶片故障进行检测和诊断是至关重要的,以尽量减少这类机器的严重损害。本文利用实验装置对旋转叶片进行了振动分析,以建立一种检测旋转叶片故障的方法。研究中考虑的故障包括裂纹和机械松动,使用激光振动计记录其动态响应。将故障叶片的频响函数谱与健康叶片的频响函数谱与共振频率进行对比分析。实现物联网和无线传感器网络,将测量数据传输到云平台。采用支持向量机算法建立学习模型,对旋转叶片故障进行提取和分类。从结果可以清楚地看出,旋转叶片健康状态和故障状态的频响函数谱存在变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Real-Time Detection of Faults in Rotating Blades Using Frequency Response Function Analysis
Turbo machines develop faults in the rotating blades during operation in undesirable conditions. Such faults in the rotating blades are fatigue cracks, mechanical looseness, imbalance, misalignment, etc. Therefore, it is crucial that the blade faults should be detected and diagnosed in order to minimize the severe damage of such machines. In this paper, vibration analysis of the rotating blades is conducted using an experimental laboratory setup in order to develop a methodology to detect faults in the rotating blades. The faults considered for the study include cracks and mechanical looseness for which dynamic responses are recorded using a laser vibrometer. Analysis has been carried out by comparing the frequency response function spectrums of the fault blade with those of the healthy blade related to the resonance frequency. The Internet of Things and wireless sensor networks are implemented to transmit the measured data to the cloud platform. A support vector machine algorithm is used for preparing the learning model in order to extract and classify the faults of the rotating blades. It can be clearly seen from the results that there is variation in the frequency response function spectrums of healthy and faulty conditions of the rotating blades.
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来源期刊
CiteScore
28.20
自引率
0.70%
发文量
13
审稿时长
>12 weeks
期刊介绍: Applied Mechanics Reviews (AMR) is an international review journal that serves as a premier venue for dissemination of material across all subdisciplines of applied mechanics and engineering science, including fluid and solid mechanics, heat transfer, dynamics and vibration, and applications.AMR provides an archival repository for state-of-the-art and retrospective survey articles and reviews of research areas and curricular developments. The journal invites commentary on research and education policy in different countries. The journal also invites original tutorial and educational material in applied mechanics targeting non-specialist audiences, including undergraduate and K-12 students.
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