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首页> 外文期刊>Smart Materials & Structures >Vibration monitoring via nano-composite piezoelectric foam bushings
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Vibration monitoring via nano-composite piezoelectric foam bushings

机译：通过纳米复合压电泡沫衬套进行振动监测

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摘要

Most mechanical systems produce vibrations as an inherent side effect of operation. Though some vibrations are acceptable in operation, others can cause damage or signal a machine's imminent failure. These vibrations would optimally be monitored in real-time, without human supervision to prevent failure and excessive wear in machinery. This paper explores a new alternative to currently-used machine-monitoring equipment, namely a piezoelectric foam sensor system. These sensors are made of a silicone-based foam embedded with nano- and micro-scale conductive particles. Upon impact, they emit an electric response that is directly correlated with impact energy, with no electrical power input. In the present work, we investigated their utility as self-sensing bushings on machinery. These sensors were found to accurately detect both the amplitude and frequency of typical machine vibrations. The bushings could potentially save time and money over other vibration sensing mechanisms, while simultaneously providing a potential control input that could be utilized for correcting vibrational imbalance.
机译：大多数机械系统都会产生振动，这是操作固有的副作用。尽管某些振动在操作中是可以接受的，但其他振动可能会导致损坏或表明机器即将发生故障。这些振动将得到最佳实时监控，而无需人工监督，以防止机械故障和过度磨损。本文探索了一种替代当前使用的机器监控设备的新方法，即压电泡沫传感器系统。这些传感器由嵌入了纳米级和微米级导电颗粒的有机硅泡沫制成。受到冲击时，它们会发出与冲击能量直接相关的电响应，而无需输入电源。在当前的工作中，我们研究了它们作为机械上的自感应套管的效用。发现这些传感器可以准确检测典型机器振动的幅度和频率。衬套可能比其他振动传感机构节省时间和金钱，同时提供潜在的控制输入，可用于校正振动不平衡。

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