Abstract
Nanoclay dispersed polymer composites possess high specific stiffness and strength measured in-plane. Such composites can withstand out-of plane low-energy impacts, wear, abrasion and erosion. This paper reports the effect of nanoclay addition on particle impact erosion behaviour of glass / vinylester composites using Taguchi's Orthogonal Array technique. Erosion tests were conducted using silica sand particles of size 177 to 595μm. The results showed that addition of nanoclay up to 3wt. % reduced the erosion rate of the composites. Impingement angle, particle size, stand- off-distance and velocity of impact showed decreasing order of significance and the erosion was in the range 292.5 to442.5mg/kg. Morphology of the eroded surface was examined using Scanning Electron Microscopy. Erosion rate was maximum at normal impact angles with crater formation.
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