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: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=549524
• 关键词: Investigation; ceramic; particles; fibre; reinforced; 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人军队转变为敏捷小型武装团体的威胁。这导致装甲研究转移到更轻巧，移动和多功能系统。常规材料（例如钢）很重，通常因绝热剪切带的形成而失败。同样，当前的层压板设计是由撞击更具延展性底板的前板的严重威胁制成的，通常会在接口处产生沉重的系统和阻抗效果。因此，拟议的研究的目的是研究功能分级的陶瓷粒子和纤维增强金属基质复合材料。在这些功能分级的复合材料中，硬度和强度逐渐降低，而延展性和韧性则逐渐从前撞击表面逐渐增加。由于众所周知，纤维可以增加陶瓷的韧性，因此假设它们还可以改善通常显示出相对较低韧性的陶瓷金属复合材料的韧性。在拟议的功能分级设计中，陶瓷粒子和纤维体积分数和尺寸将从前撞击面变化。将研究粒子和纤维类型，大小和分布的影响。最初，我们将使用挤压铸造和粉末冶金生产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，夏比撞击和霍普金森压缩和扭转杆测试。影响事件将使用有限元方法（ABAQUS）和无网格模拟对影响事件进行建模。在该项目的后面，将与加拿大国家研究委员会（NRC）和国防研究开发（DRDC）合作进行弹道测试。这项工作的主要新颖性是纳米陶瓷粒子与功能级材料中碳纤维增强的结合。这项工作将有助于提高对爆炸和弹道冲击事件期间盔甲中的变形，剪切带形成和损坏机制的理解。它将有助于改善装甲材料，并有助于改善加拿大和国外的社会和军事人员的安全。