Braided thermoplastic composites characterisation and modelling

在适当的应用中，复合材料具有低质量，优异的机械性能，特别是热塑性复合材料，低嵌入碳，易于重复使用，再制造和回收，是解决脱碳挑战的完美选择。材料数据、设备和方法的缺乏阻碍了英国从领先的、完全由英国制造的复合材料中获益。设计师只需点击一下鼠标，就能获得准确的数据，从而模拟出他们的产品是由钢或铝制成的，表现如何。在许多应用中，玻璃或碳纤维复合材料可能是更好的选择，但设计师永远不会知道，因为它们无法轻易模拟性能。复合编织有限公司（CBL）在使用创新的材料和工艺组合方面独树一帜，以更高的产量和更低的价格提供结构复合材料，并且比以往任何时候都具有更好的环保证书。广泛的市场领域（包括汽车、铁路、航空航天、海事、基础设施和休闲）迫切需要轻量化、强韧性、低碳足迹的材料，以满足性能和环境目标。CBL的成立就是为了满足这些需求。任何有资质的检测机构都能准确检测标准卷。这适用于金属，但并不总是充分和可能表征复合材料产品。与金属相比，复合材料部件的形状和结构在很大程度上决定了它的性能，因此复合材料狗骨的拉伸测试并不能代表复合材料管的拉伸强度。利用国家物理实验室的专业知识，我们的目标是用不同的材料和层叠来描述一系列不同几何形状的组件（这些组件不是现成的，需要像国家物理实验室那样的能力）。组件将被精心挑选，以代表尽可能广泛的最终产品，例如，35mm圆管将是自行车框架，抓杆，汽车底盘组件和许多其他组件的合理基础。我们将把这些结果与标准的零件测试和原材料数据进行比较，并使用建模技术来确定它们之间的关系，以形成更精确的零件性能模拟的基础，并支持未来的零件测试产品保证——目前还没有，因为这种方法是创新的。最终，通过高端数字孪生包可能达到精确模拟的相同终点，但这仍然取决于我们在这里寻求的数据和验证。

In the right applications, composites are perfect to address decarbonisation challenges, with low mass, excellent mechanical performance and especially for thermoplastic composites, low embedded carbon and ease of re-use, remanufacturing, and recycling.Lack of materials data, equipment, and methods are preventing the UK from benefiting from leading edge, wholly UK manufactured composites. A designer can, at the click of a mouse, obtain accurate data that will simulate how their product will perform if made from say steel or aluminium. In many applications a glass or carbon fibre composite could be a better choice, but the designer would never know, because they can't easily simulate performance.Composite Braiding Ltd (CBL) is unique in using an innovative combination of materials and processes to offer structural composites at higher volumes and lower prices, with better environmental credentials than has ever been historically available.A wide range of market sectors (including automotive, rail, aerospace, maritime, infrastructure and leisure) are in desperate need of lightweight, yet strong and resilient materials with low carbon footprints to meet performance and environmental targets. CBL was founded to address these needs.Any competent test house can accurately test standard coupons. This is suitable for metals, but not always sufficient and possible for characterising composite products. To a far greater degree than metals, the shape and architecture of a composite component defines its properties, so a tensile test of a composite dogbone is not representative of the tensile strength of say, a composite tube.With NPL's expertise we aim to characterise a range of components of different geometries (something that is not available 'off-the-shelf', and requires capabilities like those of NPL), with different materials and layups. Components will be carefully selected to represent as wide a range of final products as possible, e.g. a 35mm round tube would be a reasonable basis for bike frames, grab poles, automotive chassis components and many others. We will compare these results to standard coupon tests and raw materials data and use modelling techniques to ascertain the relationship between them to form a basis for more accurate simulation of part performance and support product assurance from coupon testing in future -- this is not currently available, as such this approach is innovative. Ultimately the same end point of accurate simulation could potentially be reached via high-end digital-twinning packages, but this is still dependent on the data and validation that we are seeking here.