Tailoring flexural strength and toughness of bio-inspired hybrid carbon/glass fiber laminates by controlling interlayer layup configurations

IF 8.3 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2026-04-01 Epub Date: 2026-02-06 DOI:10.1016/j.tws.2026.114635

Linhai Huang , Jin Sun , Diantang Zhang , Xinchao Gao , Junpeng Li , Junhua Zhao

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引用次数: 0

Abstract

Interlayer layup configurations strongly dominate the mechanical properties of hybrid composite laminates. However, the influence of their structural parameters on the microscopic mechanical behavior and failure mechanisms remains unclear. To address this, we design a novel bio-inspired hybrid carbon/glass fiber laminate, where carbon fiber and glass fiber represent the hard and soft phases, respectively. The nonlinear mechanical behavior of 28 different layup types of hybrid carbon/glass fiber laminates is investigated through an integrated approach combining three-point bending tests and finite element analysis (FEA). Real-time monitoring of damage initiation and evolution is achieved using acoustic emission (AE) and digital image correlation (DIC), while a machine learning algorithm decodes AE features to classify damage modes. Corroborated by scanning electron microscopy (SEM), this multi-technique methodology systematically reveals the progressive damage behavior and failure mechanisms of the hybrid composites. Parametric analysis further elucidates the synergistic influence of dispersion degree and hybrid ratio, identifying the [G₃C₃]₂ laminate as the optimal configuration at a dispersion degree of 0.27 and a hybrid ratio of 0.5. Compared to the [C]₁₂ laminate, this design achieves a 32.78% higher flexural strength and a 45.82% greater energy absorption, yielding a superior comprehensive performance index of 0.77. This study establishes a bio-inspired hybrid strategy that provides a foundational framework for designing thin-walled composite structures with tailorable mechanical performance.

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通过控制层间叠层配置，定制仿生混合碳/玻璃纤维层压板的弯曲强度和韧性

层间叠层结构对混杂复合材料层合板的力学性能有重要影响。然而，其结构参数对细观力学行为和破坏机制的影响尚不清楚。为了解决这个问题，我们设计了一种新型的仿生混合碳/玻璃纤维层压板，其中碳纤维和玻璃纤维分别代表硬相和软相。采用三点弯曲试验与有限元分析相结合的方法，对28种不同铺层类型的碳/玻璃复合材料层合板的非线性力学行为进行了研究。利用声发射（AE）和数字图像相关（DIC）技术实现损伤发生和演变的实时监测，同时机器学习算法对AE特征进行解码，对损伤模式进行分类。通过扫描电子显微镜（SEM）的验证，该方法系统地揭示了复合材料的渐进损伤行为和破坏机制。参数分析进一步阐明了分散度和混杂比的协同影响，确定了[G3C3]2层压板在分散度为0.27、混杂比为0.5时的最优配置。与[C]12层压板相比，该设计的抗弯强度提高了32.78%，吸能提高了45.82%，综合性能指数为0.77。本研究建立了一种仿生混合策略，为设计具有可定制力学性能的薄壁复合材料结构提供了基础框架。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.