工艺与制造英文2021被引 11
埋入光纤布拉格光栅传感器的拉挤成型FRP梁用于应变测量和失效检测
Pultruded FRP Beams with Embedded Fibre Bragg Grating Optical Sensors for Strain Measurement and Failure Detection
Daniel Maldonado-Hurtado, Javier Madrigal, Antonio Penades, Rocío Ruiz, Ana Isabel Crespo, Salvador Sales · Universitat Politècnica de València
摘要整理
复合材料为建筑和结构设计施工开辟了新的应用维度。在建筑行业中，复合材料梁或柱是应用最广泛的复合材料产品之一，可通过拉挤成型工艺制造。这类构件通常用于承受大型荷载，因此其结构完整性必须得到保证。光学传感器相比电学传感器具有体积小、重量轻、非导电和抗电磁干扰等优势；光纤布拉格光栅（FBG）传感器因其优异的多路复用能力和相对便捷的监测特性，在光纤传感器中占据突出地位。本研究提出将FBG传感器集成到复合材料梁结构中，用于长期观测和分析结构完整性。验证测试结果表明，FBG光纤传感器成功埋入拉挤成型FRP梁中，应变传输达到7500 µɛ，且能够通过FBG光谱畸变提前预测试件失效。该方法为FRP构件的健康监测和失效预警提供了新的技术手段。
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