优化后固化,提高苎麻-碳纤维混合增强聚合物的拉伸强度

Tanvesh Dabholkar, Harikumar M.
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引用次数: 0

摘要

通过确保充分交联,优化后固化工艺对于提高环氧基纤维增强聚合物(FRP)的性能至关重要。本研究的重点是优化苎麻和碳纤维混合复合材料的后固化参数,主要目的是提高拉伸强度。采用田口试验设计法对后固化温度、后固化时间和合成纤维层数的变化进行了三个层次的系统研究。极限拉伸应力被用作响应参数。结果表明,与后固化时间相比,后固化温度对拉伸强度的影响更大。天然纤维和合成纤维的失效模式是逐渐发生的。我们建立了一个精确的多变量回归模型来预测不同后固化参数组合的反应。此外,采用粒子群优化法发现,最佳后固化时间为 12 小时,最佳温度为 60°C。这些发现有助于优化混合纤维复合材料的后固化过程,从而提高其机械性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Post curing optimization for tensile strength of hybrid ramie-carbon fiber reinforced polymer
The optimization of post-curing processes is crucial for enhancing the performance of epoxy-based fiber-reinforced polymers (FRP) by ensuring adequate cross-linking. This study focuses on optimizing the post-curing parameters for hybrid Ramie and Carbon fiber composites with the primary objective of improving tensile strength. Variations in post-curing temperature, post-curing time, and the number of synthetic fiber layers were systematically investigated across three levels using Taguchi design of experiments. The ultimate tensile stress was employed as the response parameter. Results indicate that post-curing temperature exerts a greater influence on tensile strength compared to post-curing time. A failure pattern of natural fiber followed by synthetic fibers was seen to happen progressively. A precise multivariable regression model was developed to predict the response for different combinations of post-curing parameters. Furthermore, employing particle swarm optimization revealed an optimal post-curing time of 12 h and an optimal temperature of 60°C. These findings contribute to the optimization of post-curing processes in hybrid fiber composites, thereby enhancing their mechanical properties.
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