Manufacturing, microstructural and mechanical investigations of inverse hybrid composite laminates: Glass fiber-reinforced polyamide-6/aluminium

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-02-28 DOI:10.1016/j.compstruct.2025.119027

Ahmed Makradi , Camilo Zopp , Abdelghani Laachachi , Gregor Zucker , Julian Berndt , Mustafa Basaran , Lothar Kroll , Salim Belouettar

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Abstract

Inverse hybrid laminate consists of a metallic sheet alloy sandwiched between two fiber-reinforced thermoplastic composite layers. This class of structures could be tailored through the use of specific sub-components to achieve desired mechanical performance. The metal/composite adhesion is a common challenge in this hybrid laminates and strongly depends on its sub-components. The hybrid compound targeted in the present work consist of polyamid-6 thermoplastic reinforced with glass fibres, laminated to an aluminium sheet alloy. The metal/composite adhesion is ensured by a commercial monolayer adhesive film based on functionalized polypropylene, augmented with a mechanical treatment of the aluminium sheet surfaces.

Inverse hybrid laminates are manufactured under a controlled time, temperature and pressure cycle. The laminates microstructure is investigated using DSC and tomography imaging. Three-point bending, tensile and Interlaminar Shear Strength tests are conducted to evaluate their mechanical performance and failure modes. The mechanical performances and failure mechanisms of the hybrid laminates are compared to those of glass fiber reinforced polyamide-6 under both three-point bending and tensile tests. The structural hybrid lamination in conjunction with the enhanced metal/aluminium adhesion improves stiffness and the required load to failure, although its strength is lower. The dominated structural metal/composite interfaces within the hybrid laminates exhibit lower interlaminar strength compared to the glass fiber reinforce polyamide-6 composite.

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反向混合复合材料层压板的制造、微观结构和力学研究：玻璃纤维增强聚酰胺-6/铝

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.