Bearing performance and damage characteristics of rein-infused thermoplastic 3D woven composites bolted joints

Journal article


Shah, S. Z. H., Megat-Yusoff, P. S. M., Sharif, T., Hussnain, S. M. and Choudhry, R. S. 2023. Bearing performance and damage characteristics of rein-infused thermoplastic 3D woven composites bolted joints. Polymer Composites. pp. 1-31. https://doi.org/10.1002/pc.27802
AuthorsShah, S. Z. H., Megat-Yusoff, P. S. M., Sharif, T., Hussnain, S. M. and Choudhry, R. S.
Abstract

This paper presents a comprehensive study on the single-bolt single-shear (SBSS) and double-bolt single shear (DBSS) lap joint performance of resin-infused thermoplastic 3D fibre-reinforced composite (FRC) in on-axis (0°and 90°) and off-axis (45°) configurations. The bearing performance and failure mechanisms are compared with thermoset 3D-FRC. The resin-infused thermoplastic 3D-FRC bolted joint shows improved bearing performance in terms of higher ultimate bearing strength, stiffness loss strength, and reduced damage severity than its thermoset counterpart. Additionally, this paper presents a detailed study on the intermediate and final failure mechanisms, obtained from scanning electron microscopy of the interrupted and ultimate bearing tests, to understand damage progression in SBSS and BDSS lap joints at the submicron level. The major damage characteristics of a thermoplastic 3D-FRC bolted joint include plastic deformation and plastic kinking at the hole front tip, which improve the bearing capacity and reduce stress concentration, damage severity, and its deleterious effects.

Keywords3D composites; thermoplastic resin (Elium); single shear lap joints; failure mechanisms
Year2023
JournalPolymer Composites
Journal citationpp. 1-31
PublisherWiley
ISSN1548-0569
Digital Object Identifier (DOI)https://doi.org/10.1002/pc.27802
Web address (URL)https://4spepublications.onlinelibrary.wiley.com/doi/10.1002/pc.27802
Accepted author manuscript
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File Access Level
Open
Output statusPublished
Publication dates
Online06 Oct 2023
Publication process dates
Accepted17 Sep 2023
Deposited10 Nov 2023
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