Experimental characterization of mechanical and tribological properties of composite materials for friction-based force-limiting structural components

IF 12.7 1区材料科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Composites Part B: Engineering Pub Date : 2025-04-11 DOI:10.1016/j.compositesb.2025.112472

Kaixin Chen , Georgios Tsampras , Shivaglal Cheruvalath , Mary Thundathil

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Abstract

This paper presents an experimental study to characterize the mechanical properties of composite materials and the tribological properties of composite to low-carbon structural steel friction interfaces for friction-based structural components in earthquake structural engineering applications. A systematic experimental testing program was developed, including the coupon tensile test, the plate bearing test, the bolt relaxation test, and the friction test. The friction test considered the normal load level, loading frequencies, sliding velocities, velocity profiles, and sliding histories as the testing parameters. Six types of phenolic-resin-based fiber-reinforced composite materials were tested. The results revealed the influence of the manufacturing process and the constituents of the composite materials on their mechanical and tribological properties. The flash compression molding process in manufacturing could produce composite materials having a lower concentration of phenolic resin than designed, and these materials exhibited exacerbated through-thickness creep behavior. Friction tests with different sliding velocities showed a general trend where an increase in the sliding velocity overall reduced the coefficient of friction, while lower sliding velocities overall increased the coefficient of friction. The velocity-dependent frictional behavior was found to depend on the material constituents of the composite materials. Among the friction interfaces tested, the friction interface with the composite friction material Gatke 398 (containing glass reinforcing fibers and graphite, Teflon and molybdenum disulfide MoS₂ lubricants) in contact with low-carbon structural steel appeared to exhibit the most stable frictional behavior under various sliding velocities and was considered suitable for use in friction-based structural components for earthquake structural engineering applications.

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基于摩擦的力限制结构部件的复合材料的机械和摩擦学性能的实验表征

本文对地震结构工程中摩擦型结构构件的复合材料力学性能及复合材料与低碳结构钢摩擦界面的摩擦学性能进行了试验研究。制定了系统的试验测试程序，包括粘结件拉伸试验、板承试验、螺栓松弛试验和摩擦试验。摩擦试验以法向载荷水平、加载频率、滑动速度、速度分布和滑动历史作为试验参数。对6种酚醛树脂基纤维增强复合材料进行了试验。结果揭示了复合材料的制造工艺和组成对其力学和摩擦学性能的影响。在制造过程中，闪蒸压缩成型工艺可以生产出比设计的酚醛树脂浓度更低的复合材料，并且这些材料表现出加剧的贯穿厚度蠕变行为。不同滑动速度下的摩擦试验表明，总体上，滑动速度的增加降低了摩擦系数，而整体上，滑动速度的降低增加了摩擦系数。发现速度依赖的摩擦行为取决于复合材料的材料成分。在所测试的摩擦界面中，复合摩擦材料Gatke 398（含玻璃增强纤维和石墨、特氟龙和二硫化钼MoS2润滑剂）与低碳结构钢接触的摩擦界面在各种滑动速度下表现出最稳定的摩擦行为，被认为适合用于地震结构工程应用的摩擦基结构部件。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part B: Engineering 工程技术-材料科学：复合

CiteScore

24.40

自引率

11.50%

发文量

784

审稿时长

21 days

期刊介绍： Composites Part B: Engineering is a journal that publishes impactful research of high quality on composite materials. This research is supported by fundamental mechanics and materials science and engineering approaches. The targeted research can cover a wide range of length scales, ranging from nano to micro and meso, and even to the full product and structure level. The journal specifically focuses on engineering applications that involve high performance composites. These applications can range from low volume and high cost to high volume and low cost composite development. The main goal of the journal is to provide a platform for the prompt publication of original and high quality research. The emphasis is on design, development, modeling, validation, and manufacturing of engineering details and concepts. The journal welcomes both basic research papers and proposals for review articles. Authors are encouraged to address challenges across various application areas. These areas include, but are not limited to, aerospace, automotive, and other surface transportation. The journal also covers energy-related applications, with a focus on renewable energy. Other application areas include infrastructure, off-shore and maritime projects, health care technology, and recreational products.