Implications of end cooling rates on the Mechanical, Viscoelastic, and interlaminar fracture properties of the unidirectional glass Fiber/Epoxy composites

Soudagar, Manzoore Elahi M. and Umarfarooq, M. A. and Gouda, P. S. Shivakumar and Banapurmath, Nr and Abu Osman, N. A. and Ramesh, S. and Sajjan, Ashok M. and Wei, Hua-Rong and Fouad, Yasser and Shelare, Sagar and Sharma, Shubham and Kozak, Drazan and Lozanovic, Jasmina and Kalyani, Teku and Bisht, Yashwant Singh (2025) Implications of end cooling rates on the Mechanical, Viscoelastic, and interlaminar fracture properties of the unidirectional glass Fiber/Epoxy composites. Composites Part A: Applied Science and Manufacturing, 190. p. 108631. ISSN 1359-835X, DOI https://doi.org/10.1016/j.compositesa.2024.108631.

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Official URL: https://doi.org/10.1016/j.compositesa.2024.108631

Abstract

This research explores the impact of different end cooling rates on the mechanical, viscoelastic, and fracture properties of Glass Epoxy (GE) composites. Unidirectional (UD) glass fiber and epoxy resin were utilized to prepare composite laminates, subjected to three distinct end cooling conditions (slow cooling, air cooling and fast cooling). The composites were characterized through tensile, flexural, viscoelastic, interlaminar shear strength (ILSS), mode I and II fracture tests. Results revealed a higher degree of cure in slow cooled samples (87.23 %) compared to air cooled (85.11 %) and fast cooled specimens (81.56 %). Results also revealed that cooling rates significantly influenced the mechanical, viscoelastic and fracture properties, with higher cooling rates improving ILSS(38.92 MPa to 46.31 MPa), mode I (256.28 J/m(2) to 373.85 J/m(2)) and mode II (1044.19 J/m(2) to1151.85 J/m(2)) interlaminar fracture toughness (ILFT). Tensile strength, modulus and strain at break was found to decrease with higher cooling rates. End rate of cooling (ROC) had limited effect on the flexural strength and modulus. Varied end cooling rates significantly influence the fracture behavior of glass fiber-reinforced epoxy composites under mode I and mode II loading as evidenced by SEM analysis, with fast-cooled composites exhibiting better fiber-matrix interfacial bonding and higher delamination resistance compared to other composites.

Item Type: Article
Funders: King Saud University (RSPD2025R698)
Uncontrolled Keywords: Glass fibres; Fracture toughness; Interface/interphase; Mechanical properties; Microstructures
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Biomedical Engineering Department
Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Mar 2025 03:26
Last Modified: 04 Mar 2025 03:26
URI: http://eprints.um.edu.my/id/eprint/47795

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