碳颗粒填充弹性体应变传感器的性能及特殊现象

IF 0.8 4区 工程技术 Q4 INSTRUMENTS & INSTRUMENTATION
J. Mersch, G. Gerlach
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引用次数: 0

摘要

具有碳颗粒渗透网络的弹性体是需要高伸长率和柔性传感器的应用中经常研究的一类材料。对于软机器人或智能纺织品等新应用,它们比传统的应变片有一些优势。然而,它们的功能还没有被完全理解。在这项工作中,这些材料在其动态行为方面作为应变传感器进行了研究,并证明了它们目前的局限性。很明显,这种传感器在动态载荷下表现出非单调的行为,这与在准静态试验中观察到的行为有很大不同。利用结果和机电网络模型推导、建模和实验测试了改善传感器特性的两种策略。首先,将碳纳米管颗粒定向在工艺方向上的熔融纺丝工艺产生了不同程度的各向异性。其次,为了产生局部负横向收缩,使用了额外的辅助支撑结构。虽然产生的各向异性不足以改善传感器的性能,但缺失结构可以显著提高应变灵敏度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Properties and special phenomena of strain sensors made of carbon particle-filled elastomers
Abstract Elastomers with a percolative network of carbon particles are a frequently studied class of materials for applications requiring high elongation and compliant sensors. For novel applications such as soft robots or smart textiles, these have some advantages over traditional strain gauges. However, their functionality is not fully understood. In this work, such materials are investigated as strain sensors in terms of their dynamic behavior, and their current limitations are demonstrated. It becomes clear that such sensors exhibit a non-monotonic behavior under dynamic loads that differs significantly from that observed in quasi-static tests. Two strategies for improving sensor characteristics are derived, modeled, and experimentally tested using the results and an electro-mechanical network model. First, a melt-spinning process that orients the carbon nanotube particles in the process direction creates different degrees of anisotropy. Second, to generate a local negative transverse contraction, an additional auxetic support structure is used. While the resulting anisotropy is insufficient to improve sensor properties, the auxetic structure can significantly improve strain sensitivity.
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来源期刊
Tm-Technisches Messen
Tm-Technisches Messen 工程技术-仪器仪表
CiteScore
1.70
自引率
20.00%
发文量
105
审稿时长
6-12 weeks
期刊介绍: The journal promotes dialogue between the developers of application-oriented sensors, measurement systems, and measurement methods and the manufacturers and measurement technologists who use them. Topics The manufacture and characteristics of new sensors for measurement technology in the industrial sector New measurement methods Hardware and software based processing and analysis of measurement signals to obtain measurement values The outcomes of employing new measurement systems and methods.
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