Abstract
Present research focussed on solid particle erosion behavior of epoxy/copper (Cu) functionally graded composites (FGCs). Four layered sample having different volume fraction (10%, 15%, 20%, 25%) of filler particles was developed using lay-up lamination and layered curing processes. Erosion behavior studied on abrasive-air jet testing apparatus using angular shaped silica sand erodent. Experiments were performed at impingement angles of 30°, 45°, 60°, 90° and impact velocity of 101 m/s, 119 m/s, 151 m/s and erosion rate was evaluated at different layers. Irrespective of impact velocity, FGCs showed greater erosion at 45° impingement angle which indicate their semi-ductile nature. At 45° and 101 m/s, wear rate at layer 4 comprising 25 vol% of Cu was 6.90%, 3.94%, and 1.77% lower than layer 1 (10 vol%), layer 2 (15 vol%), and layer 3 (20 vol%), respectively. Moreover, increment in erosion wear rate was observed to increase with an increase in impact velocity at all test parameters. Dominant wear mechanisms on eroded samples was observed using Scanning Electron Microscope (SEM).
Published Version
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