Research Fellows Directory
Dr Nigel Cassidy
My research primarily involves the application of engineering and geophysical methods for the characterisation, investigation and remediation of environmental, geological, hydrological, archaeological, forensic and geotechnical problems and is focused on the development of practical, non-invasive site investigation tools for industry and academia. This industrial fellowship project in partnership with Fugro Aperio involves the use of ground-penetrating radar (a sub-surface, electromagnetic imaging technique similar in principle to airborne radar) as a tool for locating and quantifying hidden, inaccessible problems within engineering structures and buried foundations (such as the corrosion and voiding of concrete, leaking water/fuel pipes, fractured and collapsing sewers, etc). By applying sophisticated computer modelling and data analysis techniques to the problem, the project aims to develop ‘automated’ recognition systems and new, specialised imaging equipment that are capable of identifying the onset of such problems without the need for expensive invasive, destructive surveys. By developing a system that is capable of improving our analysis, characterisation and monitoring of engineering structures, utilities and other sub-surface environments, the project will have an immediate practical benefit to a wide range of engineers who need advanced, non-destructive imaging tools. Our primary focus is on concrete evaluation and the in-situ assessment of sewer pipes/systems and it is hoped that the developed technologies will become adopted by the civil/utilities engineering sector in the near future.