Burgoyne, Chris - University of Cambridge - Department of Engineering, Mechanics, Materials and Design

个人简介

Chris moved to Cambridge in 1989 and was appointed Reader in Concrete Structures in 1999. He is a Fellow of the Institution of Structural Engineers and a Member of the Institution of Civil Engineers.

研究领域

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The mechanics of the debonding process when carbon fibre plates detach from concrete structures. It is our belief that this cannot be analysed using finite elements but must be tackled using fracture mechanics. We are studying the long-term properties of aramid fibres, with particular emphasis on the visco-elastic processes that govern strength, creep, relaxation, stress-rupture and strength retention. We have carried out extensive work on aramid fibres, such as Kevlar and Technora, and are currently applying those techniques to PBO. Working on the design of a tether suitable for anchoring a balloon at a height of 20 km for the purposes of geoengineering or telecommunications. The tether will have to support itself over its whole length (which effectively excludes metals as they are too heavy), must not conduct electricity (we don't want a lightening conductor) and must also be able to resist the bursting stresses from liquids contained within the pipe. The interaction of trabecular and cortical bone, which we believe can be modelled using a "beam on elastic foundation" model with the cortical bone being the beam and the trabeculae being the foundation. We also believe that failure is governed by buckling criteria (i.e. stiffness) rather than stress criteria (i.e. strength).