Abstract
The formation mechanism of non-infiltration defects by liquid metal infiltration of a unidirectional continuous fibre array has been mathematically analysed from the viewpoint of hydrodynamics. The relations between the infiltration speed, fibre diameter, fibre volume fraction, physical properties of metal melt and externally applied squeeze pressure needed to maintain a constant infiltration speed were determined. The theoretical results are applied to analyse the infiltration process of practical unidirectional continuous fibre arrays and the formation of the macro and micro non-infiltration defects commonly present in composites.
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