Nylon polymer with an optimal blend of Kevlar, fiberglass, and high-speed, high
temperature (HSHT) Fiberglass offers improved characteristics such as flexural
strength, wear resistance, electrical insulation, shock absorption, and a low
friction coefficient. For this reason, the polymer composite manufactured by
combining HSHT, Kevlar, and fiberglass with nylon as base material will expand
the uses of nylon in the aerospace, automotive, and other industrial
applications related to ergonomic tools, assembly trays, and so forth. The
proposed work was carried out to investigate the continuous fiber reinforcement
(CFR) in nylon polymer using a dual extrusion system. Twenty experimental runs
were designed using a face-centered central composite design (FCCD) approach to
analyze the influence of significant factors such as reinforcement material,
infill pattern, and fiber angle on the fabricated specimen as per American
Society for Testing Materials (ASTM) standards. The tensile strength, percentage
elongation, and surface roughness of each test specimen (ASTM) have been
investigated using the universal testing machine (UTM) and a surface roughness
tester. A set of regression equations connecting process input factors and
output features have been derived using the response surface methodology (RSM).
In addition, the MOGA-ANN method is employed to achieve the multi-response
targets. The results show that the best tensile strength and surface roughness
are achieved with a 64.5-degree fiber angle, fiberglass CFR, and a triangular
infill pattern, while the best balance and optimal response are achieved with a
49.2575-degree fiber angle, a rectangular fill pattern, and fiberglass
reinforcement using the MOGA-ANN evolutionary hybrid algorithm. With MOGA-ANN,
the least surface roughness of 1.43158 microns, maximum tensile strength, and
percentage elongation of 37.869 MPa and 51.05% were attained at these
parameters, and the same has been validated experimentally.
