The results indicate that the difference of fracture toughness between MD and CD increases with a decrease in jet_wire speed ratio, and the main reason is stronger fibre orientation.
Furthermore, it is revealed that the fracture of fibre results from the longitudinal sliding displacement of fibrils or microfibrils.
还发现聚乙烯纤维在单向拉伸下的断裂是通过细纤维或细纤维束的相互滑移而实现的。
3
The fracture properties of RPC(Reactive Powder Concrete) and fibre RPC are analyzed by the Fictitious Crack Model(FCM) and the linear elastic fracture mechanics.