Compression-compression fatigue performances of hybrid unidirectional/woven carbon-fiber reinforced composite laminates after LVI

IF 2.3 3区 材料科学 Q3 MATERIALS SCIENCE, COMPOSITES
Wenqian Wang, Hangchao Wang, Yu Feng, Binlin Ma, Zhe Li, Jinpeng Li
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引用次数: 0

Abstract

Compression-compression fatigue behavior of hybrid unidirectional/woven carbon-fiber reinforced composite laminates after low-velocity impact (LVI) was studied in this paper. The paper contains two parts. Firstly, different levels of impact energy were introduced on the specimens. Impact damage modes were obtained and characterized as fiber breakages, matrix cracks, indentation and delamination. The relationships between indentation depth/damage area and impact energy were established. Secondly, compression-compression fatigue tests were conducted on the impact damaged specimens. Fatigue life degradation trends were analyzed and fatigue limit for different types of specimens was determined. Delamination areas by depth mode and amplitude mode of C-scan showed an increasing trend with the fatigue life increasing. Stiffness decreased sharply in the early and ending stages of fatigue life. However, stiffness exhibited stable or slightly decreasing rates in the mid-stage of fatigue life. A line-shaped failure cracks going through the impact point were observed in the fatigue failure specimens.
单向/编织混合碳纤维增强复合材料层压板在 LVI 后的压缩-压缩疲劳性能
本文研究了低速冲击(LVI)后混合单向/编织碳纤维增强复合材料层压板的压缩-压缩疲劳行为。本文包括两个部分。首先,在试样上引入了不同程度的冲击能量。得到的冲击破坏模式包括纤维断裂、基体裂纹、压痕和分层。建立了压痕深度/损伤面积与冲击能量之间的关系。其次,对受到冲击破坏的试样进行了压缩-压缩疲劳试验。分析了疲劳寿命退化趋势,并确定了不同类型试样的疲劳极限。C 扫描深度模式和振幅模式下的分层面积随着疲劳寿命的延长呈上升趋势。刚度在疲劳寿命的初期和末期急剧下降。然而,在疲劳寿命的中期阶段,刚度表现出稳定或略微下降的趋势。在疲劳失效试样中观察到穿过冲击点的线形失效裂纹。
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
Journal of Composite Materials
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).
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