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首页> 外文会议>Fifth European Conference on Smart Structures and Materials 22-24 May 2000 Glasgow, Scotland, United Kingdom >Temperature Gradients and Vibrations Measurements obtained in a Composite Material by a Multichannel Optical-Fiber Interferometer
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Temperature Gradients and Vibrations Measurements obtained in a Composite Material by a Multichannel Optical-Fiber Interferometer

机译：多通道光纤干涉仪在复合材料中获得的温度梯度和振动测量

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摘要

We present the results of our experiment for the characterization of mechanical vibrations and temperature gradients of a carbon fiber board. The sensor system is a multichannel interferometer with sensing optical fibers embedded into the plate under test. We investigate the simultaneous measurement of dynamic gradients of temperature and propagation of vibrations applying a synchronous sampling at the frequency fo vibrations. The signals resulting from this technique provides the information of the optical phase due to temperature changes and the relative amplitude of vibrations. We measure the optical phase difference between four separated fiber-optic channels relative to a common reference path. The results are the calibration of the sensor and the spatial propagation of vibrations and temperature gradient.
机译：我们介绍了表征碳纤维板的机械振动和温度梯度的实验结果。传感器系统是一种多通道干涉仪，其传感光纤嵌入被测板中。我们研究在振动频率上同步采样的同时测量温度动态梯度和振动传播的方法。由该技术产生的信号提供了由于温度变化和振动的相对幅度而引起的光学相位信息。我们测量相对于公共参考路径的四个分离的光纤通道之间的光学相位差。结果是传感器的校准以及振动和温度梯度的空间传播。

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