ABSTRACT

A main challenge in design with long discontinuous fibre-based sheet moulding compound (SMC) is to understand flow-induced fibre orientation in the part. There are very few experimental methods for characterising the fibre orientation distribution in carbon fibre SMC. Consequently, even though process simulation models for predicting fibre orientation have been developed, the confidence in using these models remains low. This research aims to study the fibre orientation distribution in compression moulded carbon fibre SMC using a combined experimental and numerical approach. A recently developed micro-CT scanning-based method will be adopted to study carbon fibre SMC samples of various sizes. The data collected from the experimental study will be used to assess the predictive validity of selected commercial process simulation packages.

摘要

使用长不连续纤维基片状模塑料 (SMC) 进行设计的主要挑战是了解零件中流动诱导的纤维取向。用于表征碳纤维 SMC 中纤维取向分布的实验方法很少。因此，即使已经开发了用于预测纤维取向的过程模拟模型，使用这些模型的信心仍然很低。本研究旨在结合实验和数值方法研究压缩成型碳纤维 SMC 中的纤维取向分布。将采用最近开发的基于微 CT 扫描的方法来研究各种尺寸的碳纤维 SMC 样品。从实验研究中收集的数据将用于评估选定的商业过程模拟包的预测有效性。