{"title":"Influence of new AA 2xxx layers on the strength and damage responses of fibre metal laminates during soft body impact","authors":"S. Kavitha Mol , A. Sadiq","doi":"10.1016/j.compstruct.2024.118339","DOIUrl":null,"url":null,"abstract":"<div><p>This study focuses on analysing the effect of new AA 2xxx layers on the strength and damage response of Fibre Metal Laminates (FMLs) during bird strikes. New aluminium alloy (new AA 2xxx) designed for the leading edge of aircraft to withstand bird strikes. Four laminates of different metal thicknesses and stacking sequences were modelled with this new 2xxx aluminium alloy. These laminates were analysed based on the impact responses (reaction force, deflection, and energy dissipation) and damage behaviours (metal failure, matrix failure, fibre failure, and delamination) during a soft body (bird) impact. A comparative study found that four FMLs exhibited different impact behaviours in terms of metal thickness and layup sequence. The FML configuration (FML 5–2/1–0.2) arranges glass/epoxy layers between thinner layers of new aluminium alloy and is best suited for designing the leading edges of wing and tail structures. The new FML increases ultimate bird impact strength by 23.65% compared to conventional GLARE™ laminates.</p></div>","PeriodicalId":281,"journal":{"name":"Composite Structures","volume":null,"pages":null},"PeriodicalIF":6.3000,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composite Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263822324004677","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
引用次数: 0
Abstract
This study focuses on analysing the effect of new AA 2xxx layers on the strength and damage response of Fibre Metal Laminates (FMLs) during bird strikes. New aluminium alloy (new AA 2xxx) designed for the leading edge of aircraft to withstand bird strikes. Four laminates of different metal thicknesses and stacking sequences were modelled with this new 2xxx aluminium alloy. These laminates were analysed based on the impact responses (reaction force, deflection, and energy dissipation) and damage behaviours (metal failure, matrix failure, fibre failure, and delamination) during a soft body (bird) impact. A comparative study found that four FMLs exhibited different impact behaviours in terms of metal thickness and layup sequence. The FML configuration (FML 5–2/1–0.2) arranges glass/epoxy layers between thinner layers of new aluminium alloy and is best suited for designing the leading edges of wing and tail structures. The new FML increases ultimate bird impact strength by 23.65% compared to conventional GLARE™ laminates.
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.
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