Characteristics of carbon fiber based strain sensors for structural-health monitoring of textile-reinforced thermoplastic composites depending on the textile technological integration process
Characteristics of carbon fiber based strain sensors for structural-health monitoring of textile-reinforced thermoplastic composites depending on the textile technological integration process
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DOI：
10.1016/j.sna.2013.08.045
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发表时间：
2013-12-01
影响因子：
4.6
通讯作者：
Cherif, Ch
中科院分区：
文献类型：
--
作者：
Haentzsche, E.;Matthes, A.;Cherif, Ch
本文提出了一种有效的在线测量技术，用于无损和连续监测无端玻璃纤维增强热塑性塑料 (FRTP) 复合材料结构，利用纺织工艺技术的多种可能性，在纺织增强结构中设计和一步集成基于压阻式 exPAN 碳长丝纱 (CFY) 的一维和二维传感器结构。本文的重点是分析这种纺织技术集成传感器作为纺织增强材料的组成部分，及其用于现场监测局部和/或全局机械性能的可用性。 FRTP 结构承重层短距离内困难或难以到达的区域的载荷条件。如果碳长丝纱线传感器 (CFYS) 与周围 FRTP 的粘附力足够充分，则可以通过承载传感器的 FRTP 部件的任何机械负载来测量几何形状的变化，从而测量碳丝电阻率的变化。 将显示用于创建传感器结构的定制纤维铺放 (TFP)、横机和机织纺织工艺的优点和缺点，其中使用了上述各种交织技术。 所用纺织品制造工艺对感官特性的影响正在研究中比较。此外，还量化了集成 CFY 对基本结构机械性能的影响。可以从中衍生出对复合结构影响最小的传感器结构以及能够选择性增强复合结构的传感器。织物集成提供了一个 CFY 穿过多层加固的布线。因此，一种无损伤且可重复的生产更复杂的、3维的、基于纺织品的传感器网络是可行的。
The paper presents an effective online measurement technology for non-destructive and continuous monitoring of endless glass fiber reinforced thermoplastic (FRTP) composite structures using the numerous possibilities of textile process technologies for the design and one-step integration of one- and two-dimensional sensor structures based on piezo-resistive exPAN carbon filament yarn (CFY) in textile reinforced structures.The focus of this paper is directed at the analysis of such textile technological integrated sensors as an integral part of the textile reinforcement and their usability for in situ monitoring of local and/or global mechanical loading conditions in difficult or inaccessible areas within short distance of the structural load-bearing layers of FRTP's. If the adhesion of the carbon filament yarn sensor (CFYS) to the surrounding FRTP is sufficient enough, a change in geometry and thereby in resistivity of the carbon filaments can be measured by any mechanical load of the sensor-carrying FRTP component.The advantages and disadvantages of the tailored fiber placement (TFP), flat knitting and weaving textile processes for creating sensor structures will be shown, wherein the mentioned variety of interlacing techniques are used.The effects of the used textile manufacturing processes on the sensory properties are being compared. Furthermore, the effects of the integrated CFY on the mechanical properties of the basic structure are quantified. Sensor structures with minimal influence on the composite structure can be derived from it as well as sensors that enable a selective reinforcement of the composite structure. The textile integration provides a routing of one CFY through several layers of reinforcement. Thus, a damage-free and reproducible production of more complex, 3-dimensional, textile-based sensor networks is feasible in one step.