Hybrid Additive Manufactured-Aramid fibre body armour

混合增材制造——芳纶纤维防弹衣

• 批准号: EP/R015155/1
• 负责人: Andrew Johnson
• 金额: $ 12.83万
• 依托单位: Loughborough University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FR015155%2F1
• 关键词: Hybrid; Additive; Manufactured; Aramid; fibre

Body armour is essential to protect personnel in situations where they may be exposed to puncture or penetrative threats. The protective performance of armour can be split into four categories:1. Blunt trauma protection - often achieved using an Ethylene-Vinyl Acetate (EVA) foam and moulded Acrylonitrile Butadiene Styrene (ABS) outer shell.2. Stab resistance - typically achieved using a rigid Polycarbonate (PC) chest plate.3. Ballistic resistance - Lower level protection via a laminated network of aramid or Ultra-High Molecular Weight Polyethylene (UHMWPE) fibre layers, with higher protection achieved using ceramic plates.4. Multi-threat (stab and ballistic resistance) - Achieved using a combination of aramid/UHMWPE fibres and a PC chest plate.Whilst protection against ballistic threats can be achieved through the use of aramid-fibre armour, such armour is unsuitable at providing protection against lower velocity sharp force threats such as blades or spikes. This is due to the sharp force threat penetrating between the individual fibrous elements of the armour. Therefore, to achieve stab and ballistic resistance the use of aramid/UHMWPE fibres coupled with a PC chestplate is often required. By doing so, the improved manouverability typically offered by fibre-based armour is substantially reduced. Whilst the protective performance of these articles have progressed since their introduction, users of such armour frequently report of ill-fitting and uncomfortable garments. This, combined with the high weight and low breathability of protective articles such as PC and aramid-based armour, at best results in impaired performance such as reduced running speeds or operational manouevrability, and at worst can lead to physiological effects including nerve damage and severe musculoskeletal injuries.Additive Manufacturing (AM) is the name for group of manufacturing techniques which can produce extremely complex geometries with little or no additional costs. The use of these processes for the production of clothing has already been demonstrated in the fashion arena with the development of highly articulated linkable textile-like structures. Recent work conducted by the PI has also demonstrated that AM technologies can also be utilised to achieve stab resistance to the internationally recognised UK Home Office body armour protective standards.This project seeks to utilise the design and manufacturing opportunities offered by AM technologies, coupled with the enhanced protective performance and manouverability of existing aramid-based armour. To achieve this a range of AM material optimisation and Computer Aided Design (CAD) activities, as well as stab and ballistic validation exercises will be performed within the grant period. The development of this hybrid protective system could present a significant leap in the development of the next generation of body armour in which the physical comfort of the wearer and their subsequent operational performance is as important a factor as protective performance. In summary, this research will aim to produce the first generation hybrid AM-aramid fibre body armour panel capable of providing protection against stab and ballistic threats.

防弹衣对于在可能受到刺穿或穿透威胁的情况下保护人员至关重要。装甲的防护性能可分为四类： 1．钝性创伤保护 - 通常使用乙烯-醋酸乙烯酯 (EVA) 泡沫和模制丙烯腈丁二烯苯乙烯 (ABS) 外壳来实现。2。防刺伤 - 通常使用刚性聚碳酸酯 (PC) 胸板来实现。3。防弹性能 - 通过芳纶或超高分子量聚乙烯 (UHMWPE) 纤维层的层压网络提供较低级别的保护，使用陶瓷板实现更高级别的保护。4。多重威胁（防刺和防弹）- 通过使用芳纶/UHMWPE 纤维和 PC 胸板的组合来实现。虽然可以通过使用芳纶纤维装甲来实现针对弹道威胁的防护，但此类装甲不适合提供针对弹道威胁的防护。较低速度的锐力威胁，例如刀片或尖刺。这是由于尖锐的力量威胁渗透到装甲的各个纤维元件之间。因此，为了实现防刺和防弹性能，通常需要使用芳纶/UHMWPE 纤维与 PC 胸板。通过这样做，通常由纤维装甲提供的改进的机动性被大大降低。虽然这些物品的防护性能自推出以来已经取得了进步，但此类盔甲的使用者经常报告衣服不合身且不舒服。再加上 PC 和芳纶装甲等​​防护用品的高重量和低透气性，最好的结果是导致性能受损，例如跑步速度或操作机动性降低，最坏的情况可能会导致生理影响，包括神经损伤和严重的身体损伤。肌肉骨骼损伤。增材制造（AM）是一组制造技术的名称，它可以在很少或没有额外成本的情况下生产极其复杂的几何形状。随着高度铰接的可链接纺织品结构的开发，这些工艺在服装生产中的应用已经在时尚领域得到了证明。 PI 最近进行的工作还表明，增材制造技术也可用于实现国际公认的英国内政部防弹衣防护标准的防刺性。该项目旨在利用增材制造技术提供的设计和制造机会，以及增强现有芳纶装甲的防护性能和机动性。为了实现这一目标，将在拨款期内进行一系列增材制造材料优化和计算机辅助设计（CAD）活动，以及刺穿和弹道验证练习。这种混合防护系统的开发可能会给下一代防弹衣的开发带来重大飞跃，其中穿着者的身体舒适度及其随后的操作性能与防护性能一样重要。总之，这项研究的目标是生产第一代混合 AM-芳纶纤维防弹衣面板，能够提供针对刺伤和弹道威胁的防护。