On the notch sensitivity of flax fibre metal laminates under static and fatigue loading

Kandare, E. and Yoo, S. and Chevali, V. S. and Khatibi, A. A. (2018) On the notch sensitivity of flax fibre metal laminates under static and fatigue loading. Fatigue and Fracture of Engineering Materials and Structures, 41 (8). pp. 1691-1705. ISSN 1460-2695


Abstract

Damage progression and failure characteristics of open-hole flax fibre aluminium laminate (flax-FML) specimens subjected to quasi-static tensile or tension-tension fatigue loading were experimentally investigated. Notched and unnotched flax-FML composites exhibited brittle fracture with little or no fibre pull-out and minimal delamination at the aluminium/adhesive interface. The flax-FMLs were tested to failure under tension-tension fatigue loading conditions (R ratio of 0.1; frequency of 10Hz; applied fatigue stresses ranging between 30% and 80% of the respective ultimate tensile strength values). The fatigue cycles to failure decreased with the increase in the applied fatigue stress and hole diameter. A phenomenological modelling technique was developed to evaluate the fatigue life of an open-hole flax-FML composite. Fatigue tests on specimens subjected to a maximum load equivalent to 35% of the respective tensile failure strength were interrupted at around 85% of the corresponding fatigue life. The accumulated fatigue damage in these specimens was characterised using X-ray computed tomography. For benchmarking purposes, the fatigue performance and related damage progression in the flax-FML composite were compared with those of the glass-FMLs.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 12 Dec 2019 06:25
Last Modified: 05 May 2020 05:37
Uncontrolled Keywords: damage progression; fatigue modelling; flax fibre; FML composite; notch strength
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: B Economic Development > 86 Manufacturing > 8604 Leather Products, Fibre Processing and Textiles > 860403 Natural Fibres, Yarns and Fabrics
B Economic Development > 86 Manufacturing > 8606 Industrial Chemicals and Related Products > 860608 Rubber and Synthetic Resins
Identification Number or DOI: 10.1111/ffe.12807
URI: http://eprints.usq.edu.au/id/eprint/36469

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