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Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography

Pothnis, JR and Hajagolkar, AK and Anilchandra, AR and Das, R and Gururaja, S (2023) Open-hole fatigue testing of UD-GFRP composite laminates containing aligned CNTs using infrared thermography. In: Composite Structures, 324 .

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The present study aims to characterize the open-hole fatigue (OHF) behavior of unidirectional glass fiber-reinforced polymer matrix (UD-GFRP) epoxy composites containing aligned multi-walled carbon nanotubes (MW-CNTs) locally reinforcing the composite in the vicinity of the hole. The performance of these multi-scale composites has been compared with that of composites containing randomly oriented MW-CNTs around the hole. UD-GFRP containing neat epoxy (without MW-CNTs) as a matrix were the control samples in the study. Infrared thermography has been used to investigate the damage evolution in composites during the OHF tests. MW-CNTs, aligned perpendicular to the loading direction, improved the fatigue strength of the UD-GFRP composites by over 12 compared to the control samples. Fractography results are also presented in support of the findings from fatigue testing. Infrared thermography is presented as a method to rapidly determine the high cycle fatigue strength of the OHF specimens. © 2023 Elsevier Ltd

Item Type: Journal Article
Publication: Composite Structures
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to the Elsevier Ltd.
Keywords: Electric fields; Fatigue testing; High-cycle fatigue; Laminated composites; Multiwalled carbon nanotubes (MWCN); Plates (structural components); Polymer matrix composites, Composite laminate; Control samples; Electric field alignment; Fibre reinforced polymer matrix composite; Glassfiber reinforced polymers (GFRP); High cycle fatigue; Multi-scale composites; Multi-walled-carbon-nanotubes; Open holes; Polymer matrices, Thermography (imaging)
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 24 Nov 2023 05:18
Last Modified: 24 Nov 2023 05:18
URI: https://eprints.iisc.ac.in/id/eprint/83302

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