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首页> 外文期刊>ISIJ international >Fatigue Crack Length Measurement of Sputtered Metal Film for RFID-based Smart Stress Memory Patch
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Fatigue Crack Length Measurement of Sputtered Metal Film for RFID-based Smart Stress Memory Patch

机译：基于RFID的智能应力记忆膜片溅射金属膜的疲劳裂纹长度测量

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摘要

A new sensor, which can estimate fatigue damage parameters such as number of cycles and stress amplitude, was proposed and fabricated based on smart stress memory patch. This sensor composed of an ion-sputtered metal film deposited on the smart stress memory patch (a thin copper specimen). The crack extension of the sensor during fatigue test could be estimated by measuring the electrical resistance change of the ion-sputtered metal film. The relationship between normalized electrical resistance and the crack extension obtained from the experiment showed a good agreement with that predicted by FEM analysis. This new sensor was combined with two wireless systems using commercially available wireless module and RFID tag. The capability of these systems was evaluated and the results showed that both systems were successfully applied to measure the crack length of the smart stress memory patch. It demonstrated that the proposed systems have potential as a wireless sensor for structural health monitoring, which enable long-term fatigue evaluation with features of easy configuration, wireless and powerless.
机译：基于智能应力记忆贴片，提出并制造了一种新的传感器，该传感器可以估算疲劳损伤参数，例如循环次数和应力振幅。该传感器由沉积在智能应力记忆贴片（薄铜样品）上的离子溅射金属膜组成。可以通过测量离子溅射金属膜的电阻变化来估计传感器在疲劳测试期间的裂纹扩展。实验得出的归一化电阻与裂纹扩展之间的关系与有限元分析预测的吻合良好。这款新型传感器与两个使用商用无线模块和RFID标签的无线系统结合在一起。对这些系统的功能进行了评估，结果表明这两个系统均已成功应用于测量智能应力记忆贴片的裂纹长度。结果表明，所提出的系统具有作为结构健康监测无线传感器的潜力，该系统能够以易于配置，无线和无能为力的特点进行长期疲劳评估。

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