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Open Hole Fatigue Testing of CNT Infused GFRP Multi-scale Composite Laminates Using Infrared Thermography

Gururaja, S and Manoharan, N and Pothnis, J and Chandra, A (2023) Open Hole Fatigue Testing of CNT Infused GFRP Multi-scale Composite Laminates Using Infrared Thermography. In: SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2022, 13 - 16 June 2022, Pittsburgh, 19 – 23.

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Official URL: https://10.1007/978-3-031-17467-4_3


Cutout or holes are unavoidable features in composite structures for structural assembly and functionality that often result in regions of fatigue damage initiation. To enhance the fatigue life of the unidirectional glass fiber reinforced plastic (UD-GFRP) laminates around cutouts, multi-walled carbon nanotubes (MW-CNTs) were locally aligned at the periphery of the cutouts via a nonuniform electric field-based dielectrophoresis technique. Previous investigation on open hole tensile strength indicates that orienting CNTs perpendicular to the loading direction (and fiber direction) effectuated maximum increase in the open hole tensile strength. In the current work, fatigue characterization of locally aligned MW-CNT infused UD-GFRP multi-scale composite laminates was investigated. A novel infrared thermography (IRT)-based technique has been employed to characterize open hole fatigue (OHF) behavior of these locally aligned MW-CNT infused UD-GFRP multi-scale composite laminates. Traditional SN curve techniques tend to be time-intensive; therefore, IRT has been adopted to determine the fatigue life of CNT infused GFRP composites. © 2023, The Society for Experimental Mechanics, Inc.

Item Type: Conference Paper
Publication: Conference Proceedings of the Society for Experimental Mechanics Series
Publisher: Springer
Additional Information: The copyright of this article belongs to the Springer.
Keywords: Electric fields; Fatigue testing; Fiber reinforced plastics; Image correlation; Laminated composites; Multiwalled carbon nanotubes (MWCN); Tensile strength; Thermography (imaging); CNT infused GFRP; Composite laminate; Composites structures; Digital image correlations; Glass fiber-reinforced plastics; Multi-scale composites; Multi-walled-carbon-nanotubes; Open hole fatigue; Open holes; Structural functionality; Electrophoresis
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited: 09 Mar 2023 06:57
Last Modified: 09 Mar 2023 06:57
URI: https://eprints.iisc.ac.in/id/eprint/80941

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