Fire resistance improvements for batteries and composites (FRIBaCo)

总的来说，经济和环境激励措施对减少运输的碳足迹施加了强大的压力。在航空航天和地面运输行业，推进电气化和用聚合物基复合材料（pmc）代替金属部件减轻车辆重量是这一努力的先锋。我们的项目专注于锂基电池和复杂的碳纤维环氧复合材料结构，这些结构具有金属嵌套。这两种材料越来越多地用于航空航天飞行器，需要解决防火问题，以确保乘员的安全不会受到这种技术转变的影响。由于当前的实践可能导致不成功的认证测试，从而导致漫长而昂贵的开发周期，因此需要新的仿真工具和方法。对于我们项目所解决的问题，这意味着更好地描述与电池火灾相关的特性和风险，同时改进数值模拟，以提供点火和火焰与可燃物壁之间相互作用的预测能力，同时培训16名高素质人员。通过我们的合作伙伴关系，我们将开发这种先进的数值模拟工具，以增加对锂基电池和pmc的防火性的理解。简单的实验将用于获得模型开发所需的基本量，例如材料在固相中的反应性和热降解时释放出的气体的组成。这些模型将通过使用真实火焰获得的实验数据进行验证。我们的模型将量化锂电池组带来的危害，并为复合材料结构的耐火性和防火解决方案的性能提供预测能力。

Economic and environmental incentives impose a strong pressure to decrease the carbon footprint of transport in general. In the aerospace and ground transport industries, electrification of propulsion and reduction of vehicle weight by replacing metallic parts with polymer matrix composites (PMCs) are the spearheads of this effort. Our project focuses on lithium-based batteries and complex carbon-fiber epoxy composite structures featuring metallic inserts. Both materials are increasingly used in aerospace vehicles, and fire resistance issues need to be addressed to ensure that the safety of the occupants is not compromised by this technological shift. Novel simulation tools and approaches are needed as current practice can lead to unsuccessful certification testing, resulting in long and expensive development cycles. For the problem tackled in our project, this means better characterizing the properties and risks associated with battery fires while simultaneously improving numerical simulations to provide predictive capabilities for ignition and interactions between flames and combustible walls, while training 16 highly qualified personnel. Through our partnership, we will develop such advanced numerical simulation tools increasing the understanding of fire resistance, for both lithium-based batteries and PMCs. Simple experiments will be used to obtain the fundamental quantities needed for model development, such as the reactivities of the materials in the solid phase and the composition of the outgassing emitted upon thermal degradation. The models will be validated against experimental data obtained using realistic flames. Our models will quantify the hazard posed by lithium battery packs, as well as provide predictive capabilities for the fire resistance of composite structures and the performance of fireproofing solutions.