An assessment of the reliability of CFRP composites used in nodes of friction after impact of UV-A impacts and thermal shocks

IF 2.2 3区 工程技术 Q2 ENGINEERING, MULTIDISCIPLINARY Eksploatacja I Niezawodnosc-Maintenance and Reliability Pub Date : 2023-10-29 DOI:10.17531/ein/174221
Aneta Krzyzak, Damian Racinowski, Robert Szczepaniak, Ewelina Kosicka
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Abstract

This article describes the results of tribological research into epoxy-based composites reinforced with carbon fiber. The composites were subjected to accelerated tests simulating a semi-annual influence of environmental conditions of an elevated temperature, precipitation in combination with an influence of UV-A radiation of 0.83 W/m 2 as well as cyclic thermal shocks causing a leap temperature difference of 116.5°C. The process of friction was conducted in conditions of dry friction and wet friction in the presence of water. The authors found a positive influence of a two-month impact of environmental conditions upon increasing wear resistance. They found a reduction in weight in conditions of friction with water. At the same time, a reliability analysis for the same boundary conditions showed an increased risk of critical composite damage. The article indicates areas of safe exploitation of composites and areas of the necessity of withdrawing composites from further exploitation under the assumed environmental and tribological loads.
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CFRP复合材料在UV-A冲击和热冲击后摩擦节点的可靠性评估
本文介绍了碳纤维增强环氧基复合材料的摩擦学研究结果。对复合材料进行了加速试验,模拟了半年一次的环境条件的影响,包括高温、降水和0.83 W/m 2的UV-A辐射的影响,以及引起116.5℃温差的循环热冲击。在有水存在的条件下进行了干摩擦和湿摩擦。作者发现,两个月的环境条件对提高耐磨性有积极影响。他们发现,在与水摩擦的情况下,体重会减轻。同时,对相同边界条件下的可靠性分析表明,临界复合损伤的风险增加。文章指出了在假定的环境和摩擦学载荷下,复合材料的安全开发领域和必须退出复合材料进一步开发的领域。
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来源期刊
CiteScore
5.70
自引率
24.00%
发文量
55
审稿时长
3 months
期刊介绍: The quarterly Eksploatacja i Niezawodność – Maintenance and Reliability publishes articles containing original results of experimental research on the durabilty and reliability of technical objects. We also accept papers presenting theoretical analyses supported by physical interpretation of causes or ones that have been verified empirically. Eksploatacja i Niezawodność – Maintenance and Reliability also publishes articles on innovative modeling approaches and research methods regarding the durability and reliability of objects.
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