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Open AccessArticle

A Review of Natural Joint Systems and Numerical Investigation of Bio-Inspired GFRP-to-Steel Joints

Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK
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Author to whom correspondence should be addressed.
Academic Editor: Frank Müller
Materials 2016, 9(7), 566; https://doi.org/10.3390/ma9070566
Received: 25 April 2016 / Revised: 20 June 2016 / Accepted: 1 July 2016 / Published: 12 July 2016
(This article belongs to the Special Issue Bioinspired and Biomimetic Materials)
There are a great variety of joint types used in nature which can inspire engineering joints. In order to design such biomimetic joints, it is at first important to understand how biological joints work. A comprehensive literature review, considering natural joints from a mechanical point of view, was undertaken. This was used to develop a taxonomy based on the different methods/functions that nature successfully uses to attach dissimilar tissues. One of the key methods that nature uses to join dissimilar materials is a transitional zone of stiffness at the insertion site. This method was used to propose bio-inspired solutions with a transitional zone of stiffness at the joint site for several glass fibre reinforced plastic (GFRP) to steel adhesively bonded joint configurations. The transition zone was used to reduce the material stiffness mismatch of the joint parts. A numerical finite element model was used to identify the optimum variation in material stiffness that minimises potential failure of the joint. The best bio-inspired joints showed a 118% increase of joint strength compared to the standard joints. View Full-Text
Keywords: natural joints; adhesive joints; biomimetics; bio-inspiration; composites natural joints; adhesive joints; biomimetics; bio-inspiration; composites
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Avgoulas, E.I.; Sutcliffe, M.P.F. A Review of Natural Joint Systems and Numerical Investigation of Bio-Inspired GFRP-to-Steel Joints. Materials 2016, 9, 566.

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