MUMBAI, India, Sept. 14 -- Intellectual Property India has published a patent application (202641108135 A) filed by Hindustan Institute Of Technology And Science on September 09, 2026, for Improvement Of Compression-After-Impact Performance Of Quad-Weave Composites Using Graphene Nanoplatelets Nano Fillers.
Inventors include Ishwaragowda V Patil; Dr. C. Ramesh; and Dr. Chandrasekar Muthukumar.
The application for the patent was published on September 11, 2026, under issue no. 37/2026.
Abstract: The present work proposes a concept to increase the residual compression performance of the quad-weave composite laminates using graphene nanoplatelets (GNP) nano fillers. The intra-ply quad-weave composite laminate containing diolen, fiberglass, aramid and carbon fibres was fabricated using the vacuum bagging method with a fibre-to-resin weight ratio of 1:1. GNPs were added at concentrations of 1%, 2%, and 3% by weight to the resin, and a laminate without GNP was also fabricated. The fabricated laminates were subjected to ballistic impact using the gas gun setup with a 9 mm diameter hemispherical projectile made of EN 8 steel, fired at a velocity of 100 m/s. Post-impact, the laminates were subjected to in-plane compression testing according to ASTM D7137/D7137M. Compared with the baseline laminate without GNP, the addition of 1%, 2%, and 3% GNP increased the peak load under compression by approximately 4%, 33%, and 42%, respectively. The proposed concept shows the potential of GNP addition to improve the load-carrying capacity of the quad-weave composite laminate, with 3 wt.% GNP providing the highest improvement among the proposed configurations. Keywords: Graphene nanoplatelets (GNP); Quad-weave composite; Compression-after-impact (CAI); Peak compressive load; Projectile impact; Vacuum bagging.
Disclaimer: Curated by HT Syndication.
