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首页> 外文期刊>Construction and Building Materials >Special Issue CICE 2018 - FRP composites in construction: Advances in material research & engineering Cure and damage monitoring of flax fiber-reinforced epoxy composite repairs for civil engineering structures using embedded piezo micro-patches
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Special Issue CICE 2018 - FRP composites in construction: Advances in material research & engineering Cure and damage monitoring of flax fiber-reinforced epoxy composite repairs for civil engineering structures using embedded piezo micro-patches

机译：CICE 2018特刊-建筑中的FRP复合材料：材料研究与工程的进展使用嵌入式压电微贴片对用于土木工程结构的亚麻纤维增强环氧复合材料修复物进行固化和损坏监测

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In recent years, high interests of repair of civil engineering structures were concentrated on the fibre reinforced thermosets as a structural component for repairing use. The properties of the resulting mechanical composites are directly in relation to the reinforcement type but also to viscoelastic matrix properties. This study, proposes to in-situ follow-up the cure mechanism of a flax reinforced bio-epoxy-amine resin as repairing patches using piezoelectric elements embedded in the composite structure. After curing, the sensors remain in the part and were used as a damage detector for structural health monitoring (SHM). Curing results compared to Dynamical Mechanical Analysis (DMA) analysis show that embedded piezoelectric cells are well suited to in-situ monitor the reaction progress. Moreover, this technique was found to be reliable for detecting preliminary signal of critical state for the composite by comparison with Acoustic Emission and Digital Image Correlation (DIC). (C) 2019 Elsevier Ltd. All rights reserved.
机译：近年来，对土木工程结构进行修复的高度兴趣集中在纤维增强的热固性材料上，作为修复用的结构部件。所得机械复合材料的性能与增强类型直接相关，但也与粘弹性基体性能相关。这项研究建议使用复合结构中嵌入的压电元件对亚麻增强的生物环氧胺树脂的修复机理进行原位跟进。固化后，传感器保留在零件中，并用作结构健康监测（SHM）的损伤检测器。与动态力学分析（DMA）分析相比，固化结果表明嵌入式压电电池非常适合现场监测反应进程。此外，通过与声发射和数字图像相关性（DIC）进行比较，发现该技术对于检测复合材料的临界状态的初步信号是可靠的。 （C）2019 Elsevier Ltd.保留所有权利。

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