相关实验视频

Updated: May 3, 2026

Microhoneycomb Monoliths Prepared by the Unidirectional Freeze-drying of Cellulose Nanofiber Based Sols: Method and Extensions

Microhoneycomb Monoliths Prepared by the Unidirectional Freeze-drying of Cellulose Nanofiber Based Sols: Method and Extensions

Published on: May 24, 2018

高菌株率影响双层TC4-(GNP/TC4) 复合材料的行为,具有层次的微观结构

Hongqiang Duan^1,2, Xuexia Li^1,2, Hongmei Zhang^1,2,3

¹School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.

Materials (Basel, Switzerland)

|November 27, 2024

概括

新的双层矩阵复合材料 (TMCs) 与石墨烯纳米板块 (GNPs) 显示了增强的抗冲击性能. 这些先进材料在要求高的行业中为高应变率的应用提供了更好的性能.

科学领域:

材料科学材料科学材料科学
机械工程机械工程
复合材料复合材料复合材料

背景情况:

矩阵复合材料 (TMC) 对于汽车和航空航天行业的轻量化应用至关重要.
传统的TMC表现出室温脆弱性,限制了它们在高应变率冲击场景中的使用.
研究层次的微观结构,以克服对均强化分布的限制.

研究的目的:

设计和研究具有层次的微观结构的新型双层TMC.
评估双层TC4-(GNPs/TC4) 板的冲击性能 (V50) 和变形模式.
为在高应变率影响环境中使用TMC制定新的战略.

主要方法:

使用现场辅助烧结技术 (FAST) 制造双层TMC.
石墨烯纳米板块 (GNPs) 增强TC4 (Ti-6Al-4V) 复合材料与单体TC4.4的层状组合.
研究微观结构,冲击性能 (V50) 和变形模式.

主要成果:

与单层板相比,双层TC4- ((GNPs/TC4) 板表现出优越的冲击性能 (V50 ~ 825 m/s) 对抗7.62 mm弹子.
发现板块故障模式取决于特定的微观结构.
层次配置显著影响了复合板的故障行为.

结论:

具有层次微观结构的新型双层TMC提供了增强的抗冲击能力.
现场辅助烧结技术对于制造这些先进的复合材料是有效的.
本研究提出了一种可行的策略,用于TMC在高应变率冲击应用中.

关键词:

弹道弹道冲击反应反应机械性能机械性能机械性能微观结构设计的设计矩阵复合材料的复合材料

更多相关视频

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain

Published on: March 27, 2018

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Author Spotlight: Enhancing Fiber Composite Laminate Quality with the Wet Hand Lay-Up/Vacuum Bag Process

Published on: June 30, 2023

相关概念视频

Peptidoglycan Synthesis

Peptidoglycan Synthesis

Structure of PeptidoglycanPeptidoglycan is a vital structural component of the bacterial cell wall, providing mechanical strength and shape to the cell. It consists of repeating units of two sugars—N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM)—linked by β-1,4 glycosidic bonds. These sugar chains are cross-linked by short peptide chains, forming a mesh-like polymer that surrounds the bacterial plasma membrane.Cytoplasmic Phase – Precursor SynthesisPeptidoglycan...

Formation of Lipopolysaccharides

Formation of Lipopolysaccharides

Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin,...

Bacterial Gastroenteritis

Bacterial Gastroenteritis

Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid...