Influence of Nanosilica on Mechanical Performance in Woven Carbon/Kevlar/Epoxy Hybrid Composites.

K. G., Pranesh; Manjunath, Attel; K. C., Nagaraja; Bhat, Raghavendra; D., Prajwal; Bhowmik, Abhijit; Prakash, Chander; Mazzotti, Claudio

The study focus on fiber‐reinforced polymer composite materials, which are widely used in the mechanical industries for various applications. While using the composite materials, mechanical properties such as tensile, flexural, and interlaminar shear strength plays vital role in selection of composite materials. The current work aims to investigate the influence of adding nanosilica at varying weight percentages (0, 2, and 4) to the epoxy matrix on the tensile, flexural, and interlaminar shear strengths of the fiber‐reinforced polymer hybrid nanocomposite. The five carbon and four Kevlar layer hybrid polymer nanocomposites are made with woven fibers. The method used to improve the dispersion of nanosilica in the epoxy resin was high‐speed shearing. The hand lay‐up process was used to manufacture hybrid polymer nanocomposite laminates, which were then effectively postcured. The tests for tensile strength, flexural strength, and interlaminar shear strength were carried out in accordance with ASTM standards D3039, D790, and D2344, respectively. According to the tested specimens, a hybrid composite including 2 wt.% of nanosilica with epoxy provides better tensile strength of 6.83%, flexural strength of 10.13%, and interlaminar shear strength of 13.54% more than a hybrid composite without nanosilica. At 4 wt.% of nanosilica addition to epoxy matrix, the tensile, flexural, and interlaminar shear strength decreased when compared to 2 wt.% of nanosilica due to agglomeration. The addition of 2 wt.% nanosilica to the epoxy matrix in carbon/Kevlar fiber‐reinforced polymer hybrid composites yields superior tensile, flexural, and interlaminar shear strength compared to other weight percentages.

HYBRID materials; SHEAR strength; TENSILE tests; FLEXURAL strength; COMPOSITE materials; POLYPHENYLENETEREPHTHALAMIDE

Journal of Engineering (2314-4912), 2024, Vol 2024, p1

2314-4904

Academic Journal

10.1155/je/2646317