Internal Strain Monitoring of Composite Materials with Microstructed Optical Fiber Bragg Grating Sensors
Internal Strain Monitoring of Composite Materials with Microstructed Optical Fiber Bragg Grating Sensors
复制标题
使用微结构光纤布拉格光栅传感器监测复合材料的内部应变
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
M. Gomina
中科院分区：
文献类型：
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作者：
C. Sonnenfeld;G. Luyckx;S. Sulejmani;T. Geernaert;S. Eve;F. Berghmans;M. Gomina
我们提出了一种基于集成在复合层压板中的2个光纤传感器组合的传感系统，该系统允许在材料中进行三维内部应变测量。光纤传感器由专用微结构光纤中制作的光纤布拉格光栅组成，其对横向应变的响应增强。我们开发了传感器的数值模型，并通过在装有该传感器的层压复合材料上进行的实验对其进行了基准测试。利用该技术，我们可以沿三个主要力学方向测量应变，在横向上的理论应变分辨率为5 μe，比文献报道的结果提高了6倍。doi: 10.12783 / SHM2015/14
We present a sensing system based on a combination of 2 optical fibers sensors which are integrated in a composite laminate and that allows three dimensional internal strain measurement in the material. The fiber sensor consists in fiber Bragg gratings fabricated in a dedicated microstructured optical fiber which features enhanced response to transverse strain. We developed a numerical model of the sensor and benchmarked it with experiments performed on laminated composite coupons equipped with this sensor. With this technique, we can measure the strain along the three principal mechanical directions of the coupon with a theoretical strain resolution of 5 μe in the transverse directions which is a 6-fold improvement over results reported in literature. doi: 10.12783/SHM2015/14