用于SHM的智能纺织和纤维增强MPC复合材料

Lidor Yosef, Yiska Goldfel
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引用次数: 0

摘要

本研究结合磷酸镁水泥(MPC)基质、智能自感碳基纺织增强系统和增材短分散纤维三种先进技术,开发了新型智能复合材料结构元件。在该系统中,碳粗纱同时作为主要的增强系统和感觉剂。MPC基体的材料性能包括环境影响最小化,高弯曲强度和增强的流变性能,这是纺织增强系统的优势。从感官角度看,MPC是一种电绝缘基体,增强了碳粗纱的被测电信号。实验研究证明了这种新型混合结构的先进性能。比较了织物增强MPC构件和TRC构件在弯曲荷载作用下的结构和电响应。结构-电相关性使进一步探索新的复合结构和开发增强的智能自我感觉系统成为可能。研究表明,通过将MPC混合材料与纺织和纤维增强系统相结合,可以设计和构建具有先进结构和自感知能力的薄壁元件。
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INTELLIGENT TEXTILE AND FIBER REINFORCED MPC COMPOSITES FOR SHM
This study develops novel intelligent composite structural elements combining three advanced technologies: magnesium phosphate cement (MPC) matrix, smart-self sensory carbon-based textile reinforcement system, and additive short-dispersed fibers. In such system, the carbon rovings simultaneously serve as the main reinforcement system and the sensory agent. The material properties of the MPC matrix include minimization of environmental effects, high flexural strength and enhanced rheological properties which is an advantage in textile reinforcement system. From the sensory point of view, MPC is electrically insulated matrix which enhances the measured electrical signal from the carbon rovings. Experimental investigation demonstrates the advanced capabilities of the new hybrid structures. The investigation compares between the structural and electrical responses of textile reinforced MPC elements and TRC elements under flexural loading. The structural-electrical correlation enables to further explore new composite configurations and to develop enhanced smart self-sensory systems. The study demonstrates that by merging MPC mixture with textile and fiber reinforcement systems, it is possible to design and construct thin-walled, elements with advanced structural and self-sensing capabilities.
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