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首页> 外文会议>International Conference on System-Integrated Intelligence >Condition Monitoring of O-Ring Seals with Integrated Strain Gauges and Finite Element Analysis Assisted Signal Evaluation
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Condition Monitoring of O-Ring Seals with Integrated Strain Gauges and Finite Element Analysis Assisted Signal Evaluation

机译：具有综合应变仪的O形圈密封件的状态监测和有限元分析辅助信号评估

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摘要

In recent years, it has been shown that the degradation of an O-ring gasket during its lifetime can be correlated with the change in signal of a strain gauge, which has been embedded into the gasket. Yet, the deduction of an easy to understand, direct performance indicator for the gasket has not been addressed. In this work, we present a method that allows the interpretation of the measured signal change and results in the calculation of a simple performance indicator. This is achieved by using a Finite Element Analysis assisted signal evaluation approach. A model of an installed gasket is modified until the simulation predictions match the experimental data. The model is based on the assumption that the degradation of the gaskets performance is mainly driven by stress relaxation phenomena inside the elastomer material. By tuning stress relaxation parameters, the signal change of an embedded strain gauge can be adjusted. The remaining contact pressure of the gasket-to-compression plate-interface can be calculated from simulation and can be used as performance indicator for the gasket as the contact pressure mainly determines the sealing capability of the gasket.
机译：近年来，已经表明，在其寿命期间的O形环垫圈的降解可以与应变计的信号的变化相关，这已经嵌入到垫圈中。然而，延迟易于理解的垫片的直接性能指标尚未得到解决。在这项工作中，我们提出了一种方法，允许解释测量的信号变化并导致计算简单的性能指示符。这是通过使用有限元分析辅助信号评估方法来实现的。安装了安装垫圈的模型，直到模拟预测匹配了实验数据。该模型基于假设垫圈性能的劣化主要由弹性体材料内的应力松弛现象驱动。通过调整应力松弛参数，可以调节嵌入式应变计的信号变化。垫圈到压缩板接口的剩余接触压力可以根据仿真计算，并且可以用作垫圈的性能指示器，因为接触压力主要决定垫圈的密封能力。

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