Behaviour of continuous fibre composite sandwich core under low-velocity impact

Zangana, Sartip and Epaarachchi, Jayantha and Ferdous, Wahid ORCID: https://orcid.org/0000-0002-4473-4722 and Leng, Jinsong and Schubel, Peter (2021) Behaviour of continuous fibre composite sandwich core under low-velocity impact. Thin-Walled Structures, 158:107157. pp. 1-11. ISSN 0263-8231


Abstract

This article describes an experimental study of the impact behaviour of a novel composite corrugated core sandwich structure under low-velocity impact. Influences of geometric parameters of the novel sandwich core, such as thickness, height, and short span length were studied. Four different configurations of composite corrugated core sandwich structures were prepared and tested. The impact events were monitored using a high-speed camera and measured by an impact force transducer and accelerometer attached to the impactor. The results revealed that the increase of core thickness improved impact capacity while the increase of core height decreased sandwich strength by increasing elastic deformation. The damage status of the novel composite core sandwich was simulated and insight into the damage mechanism was gained with finite element analysis. This study proposes an improved numerical model by incorporating the effect of the impactor head which was able to predict the impact capacity to within 10% variation of the experimental results. The results also identified that the multi-cell composite corrugated core increased the impact capacity due to the continuity of the fibres between adjacent cells. Moreover, the trapezoidal composite corrugated sandwich core showed higher specific strength compared to traditional honeycomb, truss and foam cores.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
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: 08 Feb 2021 23:58
Last Modified: 08 Feb 2021 23:58
Uncontrolled Keywords: Novel composite core; Impact behaviour; Impact damage; Finite element modelling; Empirical prediction
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0913 Mechanical Engineering > 091304 Dynamics, Vibration and Vibration Control
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Fields of Research (2020): 40 ENGINEERING > 4017 Mechanical engineering > 401702 Dynamics, vibration and vibration control
40 ENGINEERING > 4017 Mechanical engineering > 401707 Solid mechanics
40 ENGINEERING > 4017 Mechanical engineering > 401706 Numerical modelling and mechanical characterisation
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2008): B Economic Development > 86 Manufacturing > 8604 Leather Products, Fibre Processing and Textiles > 860406 Synthetic Fibres, Yarns and Fabrics
Socio-Economic Objectives (2020): 24 MANUFACTURING > 2415 Transport equipment > 241501 Aerospace equipment
24 MANUFACTURING > 2415 Transport equipment > 241502 Automotive equipment
Funding Details:
Identification Number or DOI: https://doi.org/10.1016/j.tws.2020.107157
URI: http://eprints.usq.edu.au/id/eprint/40508

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