Study on behaviour of geometrically scaled glass reinforced epoxy tubes subjected to non-coincident quasi static-indentation
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 1 October 2018
Abstract
Purpose
The purpose of this paper is to study the behaviour of glass reinforced epoxy tubes subjected to repeated indentation loads at two non-coincident indentations 180° apart.
Design/methodology/approach
Four geometrically scaled specimens ranging from 100 to 400 mm diameter were used in repeated indentation tests. Force, displacement and damage growth were recorded for loading and unloading until the indenter returned to its original starting point.
Findings
Similar scaled trends were observed between the non-coincidental loadings. Unlike reported response form coincidental loadings, the responses from non-coincidental loadings yield lower values for bending stiffness and peak load.
Research limitations/implications
The differences in behaviour of the specimen between non-coincident loadings were attributed to reductions in fracture toughness and circumferential modulus.
Practical implications
Distant non-interacting damage and delamination around the circumference does reduce the structural performance.
Originality/value
Behaviour of composite tubes under different loading conditions, for example low speed impact or quasi static indentation, is widely studied, however little attention has been given to the repeated loading incidents.
Keywords
Citation
Almaskari, F. and Hafeez, F. (2018), "Study on behaviour of geometrically scaled glass reinforced epoxy tubes subjected to non-coincident quasi static-indentation", International Journal of Structural Integrity, Vol. 9 No. 5, pp. 675-692. https://doi.org/10.1108/IJSI-12-2017-0078
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited