Processing of aerospace composites

航空复合材料加工复合材料越来越多地用于商用飞机，如波音787、空中客车380和空中客车350，加拿大公司正在生产大量的此类结构。制造具有成本竞争力的复合材料飞机结构的关键是高效制造。为了实现这一目标，流程设计和开发必须得到以科学为基础的流程分析和建模的支持，以降低成本和风险。通过使用计算机模拟制造过程，可以极大地减少使过程正确所需的耗时和昂贵的制造试验次数。复合材料工艺建模开始被几家较大的飞机公司用于开发新工艺。然而，有几个领域需要我们提高理解，以实现更快、更可靠的模拟，并使这项有前途的技术得到更广泛的采用。这项建议针对其中的两个领域：1)固化复合材料的本构行为；2)蜂窝板的芯层压碎。这两个项目都涉及更大的实验研究，以首先确定各自问题背后的基础科学。随着对基本原理的更好理解，可以开发量化观察到的行为的数学模型，并将其纳入更大的模拟框架。其结果将是加深对复合材料加工基础科学的理解，以及对复合材料工艺进行更快、更可靠的模拟，这将对加拿大复合材料制造商的竞争力产生重大影响。

PROCESSING OF AEROSPACE COMPOSITES Composite materials are increasingly being used in commercial aircraft, e.g. the Boeing 787, Airbus 380, and Airbus 350, and Canadian companies are producing a significant amount of theses structures. The key to making cost-competitive composite aircraft structures is efficient manufacturing. To achieve this, process design and development has to be supported by science-based process analysis and modelling to reduce cost and risk. By simulating the manufacturing process using computers, the number of time-consuming and costly manufacturing trials required to get the process right can be reduced dramatically. Composites process modelling is starting to being used by several larger aircraft companies in developing new processes. However, there are several areas where our understanding needs to be improved to enable faster and more reliable simulations, and to make this promising technology more widely adopted. This proposal is aimed at two of those areas: 1) "Constitutive behaviour of curing composites"; and 2) "Core crush of honeycomb panels". Both projects involve larger experimental studies to first determine the underlying fundamental science behind the respective problems. With the fundamentals better understood, mathematical models that quantifies the observed behaviour can be developed, and incorporated in a larger simulation framework. The outcome will be increased understanding of the fundamental science of composites processing as well as faster and more reliable simulations of composites processes, which can have a big impact on the competitiveness of Canadian composites manufacturers.