Sand Erosion Behaviour of Alumina - Filled Epoxy Resin

Abstract

Alumina-filled epoxy resin in which erosion phenomena occurred is one typical particulate-filled composite and has been used in applications such as insulation material of the magnetic coil in linear motor car. In this study, the effect of attack angle, the content and shape of filler on erosion damage were investigated.

Influence of Matrix Modification on the Solid Particle Erosion of Glass/Epoxy Composites

“…Further, it can be noted that in these higher carbon bearing samples, the erosion rates are lower for smaller impingement angles (15°-45°), while they are nearly identical to those for the plain glass-epoxy samples at higher (45°-90°) angles. A similar increase in the erosion rates with respect to the increase in the filler volume fraction is reported in the literature 9 . However, the experiments stress the fact that the angle for maximum erosion remains about the same as for glass-epoxy systems (i.e.…”

“…These features, along with facetted carbon particles, can be seen in Figure 8. In the case of a matrix filled with particulate, the mechanism of erosion is reported to be influenced by the type of particles and their volume fraction 9 . In the present case, since the volume fraction of included filler is less, it appears that the matrix determines the mechanism of erosion, as reflected in the plots of erosion rates.…”

“…Reinforced composites, unlike the above two categories, have been shown to exhibit a semiductile behaviour with maximum erosion occurring in the angular range of 45°-60°5 , 6,7 . Factors like type and volume fraction of filler/reinforcement, bonding at the interface of reinforcement and matrix and the kind of matrix are found to influence the process 7,8,9 . Since the matrix influences mainly the erosion process, we have attempted to study the effect of the matrix on the erosion behaviour.…”