{"title":"Enhancing the mechanical performance of composite corners through microstructural optimization and geometrical design","authors":"","doi":"10.1016/j.compositesa.2024.108362","DOIUrl":null,"url":null,"abstract":"<div><p>Processing carbon fiber-reinforced composites into corner sections through compression molding poses challenges due to the limited flowability of continuous prepregs, resulting in reduced curved beam strength (CBS). The use of discontinuous plies was explored, including random HexMC and unidirectional chopped strand (CS) prepreg. A first comparison on flat UD or Quasi Iso (QI) plates highlighted the potential interest of CS in terms of stiffness and lower strength penalty as HexMC. The <em>iso</em>-thickness corners produced from HexMC reached a CBS of 1 kN while CS QI had a CBS of 2.5 kN, overperforming corners made from neat prepregs (2.1kN) thanks to the improved flowability of the CS. By selecting an optimized geometry at equivalent mass, the CBS of CS corners further increased to 6.6kN. The performance of composite corners can thus be greatly enhanced by a combination of the material microstructural arrangement and the geometrical design of the mold.</p></div>","PeriodicalId":282,"journal":{"name":"Composites Part A: Applied Science and Manufacturing","volume":null,"pages":null},"PeriodicalIF":8.1000,"publicationDate":"2024-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1359835X24003592/pdfft?md5=b9d239b95bf07d31251c13cca7fb538d&pid=1-s2.0-S1359835X24003592-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites Part A: Applied Science and Manufacturing","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359835X24003592","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
引用次数: 0
Abstract
Processing carbon fiber-reinforced composites into corner sections through compression molding poses challenges due to the limited flowability of continuous prepregs, resulting in reduced curved beam strength (CBS). The use of discontinuous plies was explored, including random HexMC and unidirectional chopped strand (CS) prepreg. A first comparison on flat UD or Quasi Iso (QI) plates highlighted the potential interest of CS in terms of stiffness and lower strength penalty as HexMC. The iso-thickness corners produced from HexMC reached a CBS of 1 kN while CS QI had a CBS of 2.5 kN, overperforming corners made from neat prepregs (2.1kN) thanks to the improved flowability of the CS. By selecting an optimized geometry at equivalent mass, the CBS of CS corners further increased to 6.6kN. The performance of composite corners can thus be greatly enhanced by a combination of the material microstructural arrangement and the geometrical design of the mold.
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.