MUMBAI, India, Feb. 27 -- Intellectual Property India has published a patent application (202641017332 A) filed by Easwari Engineering College; and Srm Institute Of Science And Technology, Chennai, Tamil Nadu, on Feb. 17, for 'glass fabric reinforced epoxy composite wrapped aluminium combined-geometry tubular energy absorber for controlled deformation.'
Inventor(s) include Dr. Praveen Kumar Alagesan; George Thamizharasan David Raja; Barath Gopaldas Gopinath; and Kamalesh Elumalai.
The application for the patent was published on Feb. 27, under issue no. 09/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to a hybrid metal-composite tubular energy absorber developed to improve crash energy management in automotive impact-prone regions. The invention is formulated with reference to vehicle collision distribution patterns (101) and comprises a thin-walled aluminium combined-geometry tube externally reinforced with a circumferential fibre-reinforced polymer composite layer. The aluminium core is fabricated from AA6061-O alloy and configured with end geometries selected from a composite wrapped non-capped cylindrical tube (201), a composite wrapped plain end-capped tube (202), a composite wrapped shallow spherical-capped tube (203), and a composite wrapped hemispherical-capped tube (204), while the composite overwrap is formed using glass fibre, kenaf fibre, or hybrid glass kenaf reinforcement embedded in a polymer matrix. The hybrid tubes are manufactured through a multi-stage deep drawing process followed by composite wrapping and curing, enabling controlled wall-thickness distribution and stable metal-composite bonding. When subjected to axial compression in a standardized test arrangement (301), the composite wrapped tubes exhibit progressive and repeatable deformation stages represented by (401), (402), (403), and (404), characterized by reduced initial peak force, stabilized folding progression, and enhanced specific energy absorption. The synergistic interaction between aluminium plastic deformation and composite confinement ensures uniform load transfer and suppresses unstable buckling. Owing to its lightweight construction, improved crash performance, and manufacturability, the invention is well suited for use in automotive crash boxes, bumper assemblies, and crash rail systems requiring reliable and efficient energy impact dissipation."
Disclaimer: Curated by HT Syndication.
