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Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester

机译：冲击测试仪校准的用于结构健康监测的强度光纤传感器

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摘要

In this paper, the use of intrinsic intensity fiber-optic sensors for structural health monitoring was investigated. Polyethylene-based composite samples with glass mat reinforcement and embedded telecommunication fibers were subjected to impact using high-speed puncture impact tester as a calibration device. Transfer function of the sensor was generated by linking the light intensity modulation depth with the impact force and the impact point to fiber distance. Conditions for transfer function validity were presented. To detect any possible dangerous impact, a net of crossed fibers was proposed and the net spacing for the given material was calculated. Appropriate non-damaging calibration procedure was proposed, as well as the algorithm for locating the impact point. The method for calculating the impact force, the projectile momentum change, and the place of impact was verified by consecutive strikes on the previously calibrated sample. The sensor can also provide information on the time of the impact and an alarm signal if the force exceeds the damaging threshold force.
机译：在本文中，研究了使用固有强度光纤传感器进行结构健康监测。使用高速穿刺冲击测试仪作为校准设备，对具有玻璃垫增强层和嵌入式电信纤维的聚乙烯基复合材料样品进行冲击。传感器的传递函数是通过将光强度调制深度与冲击力和冲击点与纤维距离联系起来而生成的。提出了传递函数有效性的条件。为了检测任何可能的危险影响，建议使用交叉纤维网，并计算给定材料的净间距。提出了适当的无损标定程序，以及确定冲击点的算法。通过对先前校准的样品进行连续打击，验证了计算冲击力，弹丸动量变化和冲击位置的方法。如果力超过破坏性阈值力，则传感器还可以提供有关撞击时间的信息和警报信号。

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