Self-Sensing Hybrid Fibre-Reinforced Polymer for Structural Health Monitoring (SHM)
Self-Sensing Hybrid Fibre-Reinforced Polymer for Structural Health Monitoring (SHM)
复制标题
用于结构健康监测 (SHM) 的自感知混合纤维增强聚合物
DOI：
10.4028/p-64226e
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
I. Alarifi
中科院分区：
文献类型：
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作者：
Khalid Alblalaihid;S. Alghamdi;Anas Alburayt;Ahmed Alwahid;Meshal Abuobaid;Abdullatif Alshaikh;Sabri Alkhibari;I. Alarifi
混合复合材料已广泛应用于许多工程应用（如汽车），并具有比传统纤维增强复合材料高强度重量比和低成本等优点。然而，在同一基体中结合两种增强纤维可能会导致不同的破坏模式，如层间分层和结构在高载荷作用下的破碎。为了避免这一问题，需要在混杂复合材料结构中进行实时损伤检测，以保证结构的完整性。本文概述了一种集成电容式传感器的工作机理和初步制作方法。进行拉伸试验是为了对所提出的传感器进行基本表征，并提供自感知功能（智能结构）。结果表明，通过原位监测可以检测到层间损伤。结果表明，在电容相对变化开始减小的拐点和轴向拉伸力增大的拐点出现了初始损伤。此外，所开发的智能材料对十字头位移在拐点前表现出线性敏感性，应用该监测方法可用于混合复合材料的自传感。
Hybrid composite material has been widely used in many engineering applications (e.g., for automobiles)and has several advantages over conventional fibre-reinforced composite materials, such as high strength-to-weight ratio and low cost. However, combining two kinds of reinforcement fibre within a common matrix may lead to different failure modes, such as delamination between the layers and fragmentation when the structure is subjected to high loads. To avoid this problem, real-time damage detection should be integrated into the hybrid composite structures for structural integrity. This paper outlines the working mechanisms and the initial fabrication of an integrated capacitive sensor into the intra-ply hybrid composite. The tensile test was conducted to perform the basic characterization of the proposed sensor and provide self-sensing functionality (smart structure). The results illustrate that damage between layers can be detected by in-situ monitoring. It is shown that the initial damage was detected at the turning point where the relative change in capacitance begins to decrease and when the axial tensile force increases. In addition, the developed smart material has shown a linear sensitivity toward crosshead displacement up to the turning point, and applying the monitoring is useful in self-sensing for hybrid composites.