A High-Fidelity Numerical Study of Trans-Laminar Fracture in Carbon/Epoxy Laminates Under Varying Environmental Conditions

IF 2.9 4区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Applied Composite Materials Pub Date : 2026-03-27 DOI:10.1007/s10443-026-10463-4

Xiaodong Xu, Supratik Mukhopadhyay

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Abstract

This paper focuses on trans-laminar fracture process under varying environmental conditions which is crucial for the design and certification of many modern engineering applications. High-fidelity Finite Element (FE) models are developed for predicting trans-laminar fracture of a quasi-isotropic carbon/epoxy laminate under room temperature dry, and for the first time hot temperature wet conditions. Such FE modelling of ASTM E1922 specimens has not been done before. The FE models in ABAQUS Explicit employ a Weibull failure criterion for fibre fracture and cohesive surfaces for sub-critical damage to explain the complex trans-laminar fracture process. It successfully captures the toughening mechanisms, which are further enhanced by increased sub-critical damage under hot temperature wet conditions. This can finally be confirmed by the current models which addresses some limitations of ASTM E1922 e.g. a limited ligament length and the tendency of having premature compressive failure at the specimen rear end.

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不同环境条件下碳/环氧层合板跨层断裂的高保真数值研究

本文重点研究了不同环境条件下的跨层裂缝过程，这对许多现代工程应用的设计和认证至关重要。建立了高保真有限元（FE）模型，用于预测准各向同性碳/环氧层压板在室温干燥和高温潮湿条件下的跨层断裂。这种ASTM E1922试样的有限元建模以前还没有做过。ABAQUS Explicit中的有限元模型采用Weibull破坏准则来解释复杂的跨层断裂过程。它成功地捕获了增韧机制，在高温潮湿条件下，亚临界损伤的增加进一步增强了增韧机制。目前的模型最终可以证实这一点，该模型解决了ASTM E1922的一些局限性，例如有限的韧带长度和试样后端过早压缩破坏的趋势。

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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.