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The present investigation addresses the influence of fly ash filler material on physico-mechanical properties (water absorption, tensile, flexural, impact, and hardness) and abrasive wear on alkali-treated (2% NaOH) chopped Himalayan agave fiber randomly oriented compound with polyester resin. The physico-mechanical properties such as void fraction, water resistance capability, tensile, flexural, impact, hardness, and dry abrasive wear characteristics of Himalayan agave fiber/polyester composites was determined. The maximum tensile strength (30.09 MPa), flexural strength (54.51 MPa), impact strength (30.24 J/m 2 ), and hardness (42.5 H V ) were observed at 15 wt.% of Himalayan agave fiber and fly ash. The abrasive specific wear rate of the composite was studied at four different factors, i.e., fiber loading (5–15 wt.%), normal load (10–30 N), fly-ash content (5–15 wt.%), and speed (50–150 rpm) using Taguchi’s method L 9  orthogonal array. The study determined that the control parameters of fiber loading (15 wt.%), normal load (10 N), fly-ash content (15 wt.%), and speed (100 rpm) exhibited the least specific abrasive wear rate. The SEM analysis of worn abrasive surfaces revealed the micro-cuts, fiber breakage, micro-plowing, cracks, and wear debris as the dominant wear mechanism.

Physico-Mechanical Properties and Taguchi Optimized Abrasive Wear of Alkali Treated and Fly Ash Reinforced Himalayan Agave Fiber Polyester Composite