Vijay Kumar, T.N.Sharanaprabhu, C.M.Kudari, S.K.2026-02-062022Materials Today: Proceedings, 2022, Vol.68, , p. 1806-1809https://doi.org/10.1016/j.matpr.2022.07.319https://idr.nitk.ac.in/handle/123456789/29930In this paper, the fracture toughness of hybrid composites for with and without fly ash composites is evaluated for asymmetric four-point bend test specimens. The preparations of specimens are by simple hand layup technique. Specimens are tested under a universal testing machine for peak load. And concluded that the specimens with fly ash composition yield better fracture toughness compared to without flyash. The scanning electron microscope study shows that the crack starting and progression is mainly dependent on s/d ratios. © 2022FlyashFracture toughnessHand layupPeak load