Analytical prediction of the thermal overheating in curing thick layers of fibre-reinforced thermosets

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2025-06-01 Epub Date: 2025-02-26 DOI:10.1016/j.compositesa.2025.108815

Jordi Farjas , Daniel Sanchez-Rodriguez , Sihem Zaidi , Didina-Ramona-Casandra Cârstea , Ahmed Mohamed Saleh Abd Elfatah , Andrei Rotaru , Josep Costa

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Abstract

A recurring problem when curing thick specimen carbon-fibre-reinforced polymers is the formation of thermal gradients. Thermal gradients can lead to heterogeneous properties, overcuring and, in some cases, matrix degradation. To address this problem, we have developed a general-purpose analytical solution that allows one to predict the maximum temperature difference within a specimen when the curing reaction takes place under isothermal conditions. The analytical solution is specifically tailored to deal with standard conditions in the manufacture of composites and can be applied to different resins and prepregs. In addition, it allows one to determine the conditions for when a thermal runaway will occur. The analytical solution was validated by comparing the analytical predictions with numerical and experimental results.

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厚层纤维增强热固性材料固化过程中热过热的分析预测

一个反复出现的问题，当固化厚样品碳纤维增强聚合物是热梯度的形成。热梯度会导致非均质性、过度固化，在某些情况下还会导致基体降解。为了解决这个问题，我们开发了一个通用的分析解决方案，允许人们预测在等温条件下固化反应发生时试样内的最大温差。该分析解决方案是专门为处理复合材料制造中的标准条件而定制的，可以应用于不同的树脂和预浸料。此外，它还允许人们确定热失控发生的条件。通过与数值和实验结果的比较，验证了解析解的正确性。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.