双层玻璃/环氧树脂层压板的静态和疲劳行为

IF 2.3 3区材料科学 Q3 MATERIALS SCIENCE, COMPOSITES

Journal of Composite Materials Pub Date : 2024-06-01 DOI:10.1177/00219983241261065

Tomás Barros Vasconcelos, José Leandro Correia Alves, Evans Paiva da Costa Ferreira, Raimundo Carlos Silverio Freire Júnior, José Daniel Diniz Melo

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引用次数: 0

摘要

双层双（DD）配置作为一种新概念被提出来，即双组双螺旋[±j/± ψ]n角叠加形成复合材料层压板。在复合材料设计优化和制造方面，这一概念比传统的层压方式具有显著优势。本实验研究评估了适合风力涡轮机叶片应用的两种弹性面内等效玻璃/环氧层压板的性能：四轴（Quad）[±45/(0/90)3]s 和双双（DD）[±15/±75]4T。在循环单轴拉伸-拉伸载荷下，使用无缺口和开孔试样进行了机械测试。从自由边缘开始的分层导致无缺口 DD 试样过早失效。对于开孔试样，两种堆叠顺序得到的疲劳测试结果显示出相似的性能。最终，该研究为了解承受拉伸循环载荷的双层玻璃/环氧树脂层压板的疲劳行为做出了宝贵贡献。

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Static and fatigue behavior of double-double glass/epoxy laminates

Double-double (DD) configuration has been proposed as a new concept in which a double set of double helix [±ϕ/± ψ]n angles are stacked up to form a composite laminate. This concept promises significant advantages over conventional layups for composite design optimization and manufacturing. This experimental study evaluated the performance of two elastically in-plane equivalent glass/epoxy laminates suited for wind turbine blade applications: a quadriaxial (Quad) [±45/(0/90)3]s and a double-double (DD) [±15/±75]4T. Mechanical tests were performed under cyclic uniaxial tensile-tensile load using unnotched and open hole specimens. Delamination initiating from the free edges resulted in premature failure of the unnotched DD specimens. For open hole specimens, fatigue tests results obtained from both stacking sequences showed similar performance. Ultimately, the study presented constitutes a valuable contribution to the understanding of fatigue behavior of double-double glass/epoxy laminates subjected to tensile cyclic loading.

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来源期刊

Journal of Composite Materials 工程技术-材料科学：复合

CiteScore

5.40

自引率

6.90%

发文量

274

审稿时长

6.8 months

期刊介绍： Consistently ranked in the top 10 of the Thomson Scientific JCR, the Journal of Composite Materials publishes peer reviewed, original research papers from internationally renowned composite materials specialists from industry, universities and research organizations, featuring new advances in materials, processing, design, analysis, testing, performance and applications. This journal is a member of the Committee on Publication Ethics (COPE).