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Andrew Rhead

Dr Andrew Rhead

University of Bath

A.T.Rhead@bath.ac.uk

Dr Andrew Rhead is Senior Lecturer in Composites in the Department of Mechanical Engineering.  His work focuses on the impact and damage tolerance of aerospace composite structures. He is particularly interested in the detection and modelling of mechanisms of failure and Non-Destructive evaluation (NDE) of impact damage.

Andrew graduated with a MSci(MMath) with a focus on Dynamical Systems, specifically Mechanics, Control theory, Chaos theory, Fluid dynamics, Fractals and Quantum mechanics, from the University of Bristol in July 2006.  He obtained a PhD on the Analysis and optimisation of damage tolerant, post-buckled composite laminates from the University of Bath in 2009. His research was sponsored by GWR and Airbus.  Between November 2009 and April 2010, Andrew was awarded an EPSRC grant for improving departmental use of Digital Image Correlation (DIC) and Ultrasonic C-scan equipment.

Andrew's six-month research project in 2010 on analysing and optimising the damage tolerance of stiffeners subject to in-plane impact was funded by Airbus and was used to confirm allowable strain in the structure of the Airbus A350-XWB wing.

Between 2010 and 2012 Andrew worked on ABBSTRACT 2 – EPSRC, an Airbus and GKN funded project assessing the feasibility of using curved fibres to manufacture aerospace components.  Andrew provided experimentally validated analytical models for the damage tolerance of curved fibre structures that can be used in conjunction with minimum mass optimisation tools.

During the manufacture and operation of an aircraft, layered Carbon Fibre Reinforced Plastic (CFRP) components are subject to a variety of low-energy impacts.  These impacts typically leave minor surface indentations that go unnoticed during routine inspections. However, dangerous internal damage is also created which can lead to catastrophic failure when loaded.  The lack of damage tolerance of composite structures is one of the greatest barriers to improvement of airframe structural efficiency; a critical driver for increasing fuel efficiency and reducing emissions.  Andrew's research has focused on assessing the residual strength of impact damaged composite laminates and has been supported by the EPSRC, Airbus and latterly by GKN Aerospace.

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