Notice of Redundant Publication: Investigation on Mechanical characterization of abutilon indicum fiber nonwoven fabric reinforced epoxy composite materials (C M Mohanraj et al 2023 Mater. Res. Express 10 015101)

This project studies how natural‑fiber‑reinforced polymer composites behave mechanically, thermally, and morphologically. The focus is on epoxy composites that use nonwoven fabric made from Abutilon indicum (AI) fibers. To meet the rising need for sustainable, lightweight parts in aerospace and automotive fields, we make composite laminates by: * preparing the fabric with needle‑punching, then * molding it with the hand‑layup method. We test how the amount of fiber affects the material by changing the fiber weight fraction from 20 % to 40 % in 5 % steps. Mechanical tests include: * tensile strength, * flexural strength, * compressive strength, * Izod impact resistance. These tests help find the best fiber

loading level. We also look at thermal and chemical properties: * Thermogravimetric Analysis (TGA) measures how the composites degrade with heat. * Fourier‑Transform Infrared Spectroscopy (FTIR) identifies the chemical functional groups present. Scanning Electron Microscopy (SEM) examines broken surfaces to see how well the fibers stick to the epoxy, how fibers pull out, and where voids appear. The results give essential baseline data for using agricultural‑residue fibers as structural or semi‑structural parts in environmentally friendly engineering designs.

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