Solid particle erosion behaviour of glass fibre reinforced boric acid filled epoxy resin composites

The tests which involved angular aluminium (Al2O3) particles with two different sizes of approximately 200 and 400 μm were conducted at the operating conditions namely different impact velocities of approximately 23, 34 and 53 m/s, two different fibre directions [0° (0/90) and 45° (45/−45)] and three different impingement angles of 30°, 60° and 90°. New composites with addition of Boric Acid filler material at 15% of resin exhibited upper wear than the neat materials without filler material. This means the filler material has decreased the erosion wear resistance. SEM views showing worn out surfaces of the test specimens were scrutinised.

► Boric Acid was added into neat GF/EP composite structure as filler materials.
► Erosion wear behavior was investigated under impact velocities and particle sizes.
► In addition, erodent impingement angles along two fibre directions were used.
► As a result, Boric Acid filler material has decreased the erosion wear resistance.