Post-curing and fiber hybridization effects on mode-II interlaminar fracture toughness of glass/carbon/epoxy composites

Umarfarooq, M. A. and Gouda, P. S. Shivakumar and Banapurmath, N. R. and Kittur, M. I. and Khan, Tabrej and Parveez, Bisma and Sebaey, Tamer A. and Badruddin, Irfan Anjum (2023) Post-curing and fiber hybridization effects on mode-II interlaminar fracture toughness of glass/carbon/epoxy composites. Polymer Composites, 44 (8). pp. 4734-4745. ISSN 0272-8397, DOI https://doi.org/10.1002/pc.27436.

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Abstract

Failure by delamination is one of the primary concerns in laminated composites. The development and progression of the delamination results in the degradation of composite stiffness affecting its structural integrity and may ultimately result in composite structure failure. Therefore, knowledge of the evolution of delamination resistance and the factors which affect the delamination in composites is of utmost importance for the selection of materials. This study investigates the effect of fiber hybridization and post-curing on mode-II interlaminar fracture toughness (GIIC) of Glass/Carbon/Epoxy (GCE) composites. Carbon/Epoxy (CE), Glass/Epoxy (GE), and GCE composite laminates were molded employing the process of hand layup technique and postcured at different temperatures. GE laminates exhibited a superior load for delamination and deformation compared to CE and GCE laminates. The hybrid GCE laminates exhibited higher interlaminar fracture toughness compared to non-hybrid GE and CE laminates, which can be attributed to the synergetic effect of Carbon and Glass fibers. The laminates post-cured at 180 degrees C exhibited higher fracture toughness in their corresponding groups. The delaminated surfaces of CE, GE, and GCE laminates were further examined under Scanning electron microscopy (SEM) to understand the effect of post-curing and fiber hybridization on mode-II interlaminar fracture toughness.

Item Type: Article
Funders: Deanship of Scientific Research at King Khalid University for funding this work through the Large Groups Project under grant number RGP. 2/36/44
Uncontrolled Keywords: fractography; mode II fracture toughness; polymer-matrix composites; SEM
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 01 Oct 2025 02:54
Last Modified: 01 Oct 2025 02:54
URI: http://eprints.um.edu.my/id/eprint/50303

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