Investigation of ceramic particles and fibre reinforced functionally graded metal matrix composites for blast and ballistic armour protection

用于爆炸和弹道装甲防护的陶瓷颗粒和纤维增强功能梯度金属基复合材料的研究

• 批准号: 341890-2012
• 负责人: Nganbe, Michel
• 金额: $ 1.46万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=509782
• 关键词: Investigation; ceramic; particles; fibre; reinforced

The major security concern shifted from the threat of powerful enemy armies to that of agile small armed groups since September 11, 2001. This led to a shift in armour research towards more lightweight, mobile and versatile systems. Conventional materials such as steels are heavy and often fail by adiabatic shear band formation. Also, the current laminate design made of a hard threat defeating front plate attached to a more ductile backing plate generally results in heavy systems and impedance effects at interfaces. Therefore, the objective of the proposed research is to investigate functionally graded ceramic-particles and fibre reinforced metal matrix composites. In these functionally graded composites, hardness and strength gradually decrease while ductility and toughness gradually increase from the front impact face to the back face. As fibres are known to increase the toughness of ceramics, it is hypothesised that they can also improve the toughness of ceramic-metal composites that usually show relatively low toughness. In the proposed functionally graded design, ceramic particle and fibre volume fraction and size will be varied from the front impact face to the back face. The effects of particle and fibre type, size and distribution will be studied. We will initially focus on laboratory scale sample production using squeeze casting and powder metallurgy. Testing will include compression, tensile, torsion, bending, Charpy impact and Hopkinson compression and torsion bar tests. Impact events will be modelled using finite element method (ABAQUS) and meshless simulation. Later in the project, ballistic tests will be performed in collaboration with National Research Council (NRC) and Defence Research Development Canada (DRDC). The main novelty of this work is the combination of nano-ceramic particle with carbon fibre reinforcement in functionally grade materials. The work will contribute to improving the understanding of deformation, shear band formation and damage mechanisms in armours during blast and ballistic impact events. It will help improve armour materials and contribute to improving security for society and military personnel in Canada and abroad.

自 2001 年 9 月 11 日以来，主要的安全问题从强大的敌军威胁转向敏捷的小型武装团体的威胁。这导致装甲研究转向更轻量、移动和多功能的系统。诸如钢之类的传统材料很重，并且经常因绝热剪切带的形成而失效。此外，当前的层压板设计由连接到更具延展性的背板的硬威胁击败前板制成，通常会导致系统沉重并在界面处产生阻抗效应。因此，本研究的目的是研究功能梯度陶瓷颗粒和纤维增强金属基复合材料。在这些功能梯度复合材料中，从正面冲击面到背面，硬度和强度逐渐降低，而延展性和韧性逐渐增加。由于已知纤维可以提高陶瓷的韧性，因此假设它们还可以提高通常韧性相对较低的陶瓷-金属复合材料的韧性。在所提出的功能分级设计中，陶瓷颗粒和纤维的体积分数和尺寸将从正面冲击面到背面变化。将研究颗粒和纤维类型、尺寸和分布的影响。我们最初将专注于使用挤压铸造和粉末冶金进行实验室规模的样品生产。测试将包括压缩、拉伸、扭转、弯曲、夏比冲击以及霍普金森压缩和扭杆测试。撞击事件将使用有限元法 (ABAQUS) 和无网格模拟进行建模。在该项目后期，将与国家研究委员会（NRC）和加拿大国防研究发展局（DRDC）合作进行弹道测试。这项工作的主要新颖之处在于纳米陶瓷颗粒与碳纤维增强材料在功能级材料中的结合。这项工作将有助于提高对爆炸和弹道冲击事件期间装甲变形、剪切带形成和损伤机制的理解。它将有助于改进装甲材料，并有助于改善加拿大和国外社会和军事人员的安全。