Influence of seawater absorption on vibrational and tensile characteristics of quasi-isotropic glass/epoxy composites

Acharya, Pavan and Pai, Dayananda and Kini, Vijaya M and Hegde, Sriharsha and Hosagade, Padmaraja Narayana (2019) Influence of seawater absorption on vibrational and tensile characteristics of quasi-isotropic glass/epoxy composites. Journal of Materials Research and Technology, 8 (1). pp. 1427-1433. ISSN 2238-7854

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Abstract

tGlass fibre reinforced composites are common structural materials in civil engineering andmarine applications. Exposure to moisture is the key challenge for using fibre-reinforcedcomposites in marine structures. This study focuses on preparation of quasi-isotropic E-glass/epoxy laminates with stacking sequence [0◦/90◦/+45◦/−45◦]sfabricated using vacuumbagging technique. Ageing studies in artificial seawater was conducted in sub-zero andambient temperatures for a duration of 3600 h. Moisture absorption behaviour, variationof damping, stiffness properties, and microstructural failure analysis studies were carriedout as per ASTM standards. Results indicate that the rate of moisture absorption depends onageing temperature. In the current study, it is observed that composites aged in ambient tem-perature absorbed higher amount of moisture than sub-zero temperature aged specimen.Moisture absorption reduced stiffness and natural frequency of quasi-isotropic laminates

Item Type: Article
Uncontrolled Keywords: Damping,Quasi-isotropic,Stiffness,Ageing, Moisture Absorption
Subjects: Engineering > MIT Manipal > Aeronautical and Automobile
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 10 May 2019 09:24
Last Modified: 10 May 2019 09:24
URI: http://eprints.manipal.edu/id/eprint/153811

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