摘要
The study aims to analyze the synergistic effect of hybrid fiber reinforcements on wear resistance of epoxy based natural fiber reinforced polymer composites(NFPCs).The study employed jute and sisal fibers as reinforcements.Two distinct reinforcements were incorporated in equal percentages to each type of composite sample.Five distinct composite specimens were identified as follows:NFPC⁃8(containing 4%sisal and jute fibers each),NFPC⁃16(containing 8%sisal and jute fibers each),NFPC⁃24(containing 12%sisal and jute fibers each),NFPC⁃32(containing 16%sisal and jute fibers each),and epoxy(EP)(containing 0%reinforcements).The hand layup technique was used for developing hybrid natural composites.In accordance with ASTM G99,pin⁃on⁃disc wear test rig was used for the dry sliding wear tests.The effect of applied load and sliding velocities on wear volume loss and specific wear rate was studied.The obtained results indicated that wear volume and specific wear rate are significantly affected by applied load and sliding velocity.NFPC⁃32 composite exhibited minimum wear loss and specific wear rate compared to other specimens.Besides,wear loss and specific wear rate were found to increase with the increase in applied load owing to the high contact stress at counterface during sliding.Further,wear volume and specific wear rate have increased with the increase in sliding velocity.It may be due to the fact that,high shearing force has resulted in sheared transfer layer at higher velocity.Worn surface analysis using scanning electron microscopy images showed the evidence of fragmented fibers and their pullout.
