Effect of Temperature on the Mixed mode I/II Translaminar Fracture of Epoxy Composites Reinforced with Cotton Fibers

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES Applied Composite Materials Pub Date : 2024-09-14 DOI:10.1007/s10443-024-10267-4

Afshin Zeinedini, Yosra Basim Hasan

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Abstract

In recent years, laminated composites reinforced with natural fibers have extensively used in the various industries. One of the most important failure modes of laminated composite materials is translaminar fracture under different loading conditions. In this research, the effect of temperature on the translaminar critical strain energy release rate (CSERR) of the composites reinforced with cotton fibers was investigated. The cotton/epoxy samples were placed at different temperature conditions of 30, 0, and -30 °C. The translaminar CSERR values of cotton/epoxy laminated composites were obtained under pure mode I, mixed mode I/II with two different loading angles, and pure mode II loading conditions. To calculate the translaminar CSERR based on experimental results, numerical modeling was also performed. Besides, a modified version of Mixed Mode Fracture Envelope criterion was proposed to predict the mixed mode I/II translaminar fracture behavior of the cotton/epoxy laminated composites at the mentioned temperatures. The results showed that lowering the temperature has a great impact on the translaminar CSERR. It was also concluded that the change in the temperature had the greatest effect on the value of the mode I translaminar CSERR. Moreover, as the temperature decreased from 30 to 0 and -30 °C, the value of the mode I translaminar CSERR decreased around 80 and 90%, respectively.

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温度对棉纤维增强环氧树脂复合材料 I/II 混合模式横向断裂的影响

近年来，以天然纤维为增强材料的层压复合材料被广泛应用于各行各业。层压复合材料最重要的失效模式之一是在不同加载条件下的层间断裂。本研究调查了温度对棉纤维增强复合材料层压临界应变能量释放率（CSERR）的影响。棉纤维/环氧树脂样品分别置于 30、0 和 -30 °C 的不同温度条件下。在纯模式 I、两种不同加载角度的混合模式 I/II 和纯模式 II 加载条件下，获得了棉/环氧层压复合材料的层间 CSERR 值。为了根据实验结果计算层间 CSERR，还进行了数值建模。此外，还提出了混合模式断裂包络准则的修正版，以预测棉/环氧层压复合材料在上述温度下的混合模式 I/II 层压断裂行为。结果表明，降低温度对层压 CSERR 有很大影响。同时还得出结论，温度的变化对模式 I 平层压 CSERR 值的影响最大。此外，当温度从 30 ℃ 降到 0 ℃ 和 -30 ℃ 时，模式 I 平移层 CSERR 值分别下降了约 80% 和 90%。

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来源期刊

Applied Composite Materials 工程技术-材料科学：复合

CiteScore

4.20

自引率

4.30%

发文量

审稿时长

1.6 months

期刊介绍： Applied Composite Materials is an international journal dedicated to the publication of original full-length papers, review articles and short communications of the highest quality that advance the development and application of engineering composite materials. Its articles identify problems that limit the performance and reliability of the composite material and composite part; and propose solutions that lead to innovation in design and the successful exploitation and commercialization of composite materials across the widest spectrum of engineering uses. The main focus is on the quantitative descriptions of material systems and processing routes. Coverage includes management of time-dependent changes in microscopic and macroscopic structure and its exploitation from the material''s conception through to its eventual obsolescence.