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首页> 外文期刊>Proceedings of the institution of mechanical engineers >Stretchable strain sensor based on conductive polymer for structural health monitoring of high-speed train head
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Stretchable strain sensor based on conductive polymer for structural health monitoring of high-speed train head

机译：基于导电聚合物的可拉伸应变传感器，用于高速列车机头的结构健康监测

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摘要

Stretchable strain sensor has been widely applied to structural health monitor in the aerospace, high-speed train, wear electronics, and civil engineering areas. Stretchable strain sensor based on PDMS-CB (polydimethylsiloxane carbon-black) conductive polymer with large deformability is designed to collect the structural health data of the curved surface of high-speed train head (HSTH). The stretchability (>30%) of the strain sensor is validated by the FEM simulation and experimental results. Temperature effect and fatigue analysis of PDMS-CB strain sensors are considered to compensate the accuracy of strain data. The stretchable strain sensor has been applied to detect the cracks of the curved surface via the variable strain data corresponding to the crack length. A structural health monitor (SHM) based on the PDMS-CB strain sensor array is built to collect the continuous long-term strain data of the curved surface of HSTH. Wind pressure is applied to the strain sensor onto the curved surface of HSTH as external signal to simulate the strain distribution. It has been demonstrated that the PDMS-CB strain sensor is applied to structural health monitor of HSTH effectively during the driving process.
机译：可拉伸应变传感器已广泛应用于航空航天，高速列车，磨损电子设备和土木工程领域的结构健康监测器。基于可变形性大的PDMS-CB（聚二甲基硅氧烷炭黑）导电聚合物的可拉伸应变传感器，旨在收集高速列车头部（HSTH）曲面的结构健康数据。有限元模拟和实验结果验证了应变传感器的可拉伸性（> 30％）。 PDMS-CB应变传感器的温度效应和疲劳分析被认为可以补偿应变数据的准确性。可拉伸应变传感器已被用于通过对应于裂纹长度的可变应变数据来检测曲面的裂纹。建立了基于PDMS-CB应变传感器阵列的结构健康监测器（SHM），以收集HSTH曲面的连续长期应变数据。风压作为外部信号施加到HSTH曲面上的应变传感器，以模拟应变分布。已经证明，PDMS-CB应变传感器在行驶过程中有效地应用于HSTH的结构健康监测器。

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