New Dimensions of Engineering Science at Large Facilities
Lead Research Organisation:
University of Oxford
Department Name: Engineering Science
Abstract
The knowledge of multi-component, spatially varying stress and strain states and structural information is crucial for elucidating advanced concepts and models in materials science and strength engineering. Recent developments in neutron and high energy X-ray diffraction techniques at large scientific facilities have pushed the spatial resolution towards ever smaller length scales, at the same time improving data acquisition rates, making it possible to obtain large collections of diffraction patterns. However, because of the limitations imposed by gauge volume geometry and grain structure of the object the desired information is often contained within these data sets in implicit form, e.g. as convolutions or averages. Recently it has been demonstrated that robust inverse problem formulations akin to tomographic reconstruction methods can successfully be used to de-convolve detailed, spatially resolved information about material structure, texture and deformation. The present project will develop systematic approaches to the treatment of redundant high energy X-ray and neutron diffraction data sets for the purpose of extracting time-dependant, three-dimensional, multi-component maps of strain, texture and damage. X-ray diffraction experiments will be conducted on the JEEP beamline at Diamond, beamline ID15A at the ESRF, and neutron transmission data will be obtained on the ENGIN-X instrument at ISIS. The results will establish foundations for future methodologies for multi-dimensional analysis (3D and time-resolved) of strain, texture and structure of advanced engineering materials and components.
Publications
Constantinescu A
(2013)
Symbolic and numerical solution of the axisymmetric indentation problem for a multilayered elastic coating
in International Journal of Solids and Structures
Fleury R
(2017)
Characterisation of handling and service surface damage on Nickel alloys caused by low velocity impacts of blunt hard objects
in Mechanics of Materials
Hofmann F
(2012)
High-energy transmission Laue micro-beam X-ray diffraction: a probe for intra-granular lattice orientation and elastic strain in thicker samples.
in Journal of synchrotron radiation
Hofmann F
(2012)
Diffraction post-processing of 3D dislocation dynamics simulations for direct comparison with micro-beam Laue experiments
in Materials Letters
Hofmann F
(2012)
Imaging of grain-level orientation and strain in thicker metallic polycrystals by high energy transmission micro-beam Laue (HETL) diffraction techniques
in International Journal of Materials Research
Jun T
(2012)
Residual stress characterization in 12%-Cr steel friction stir welds by neutron diffraction
in The Journal of Strain Analysis for Engineering Design
Kim T.
(2013)
Feasibility study of synchrotron x-ray diffraction and absorption spectroscopy for the characterisation of NMC oxides for Li-ion battery cathodes
in Lecture Notes in Engineering and Computer Science
Kirkwood H
(2017)
High resolution imaging and analysis of residual elastic strain in an additively manufactured turbine blade
in International Journal of Nanotechnology
Korsunsky A
(2010)
Polycrystal deformation analysis by high energy synchrotron X-ray diffraction on the I12 JEEP beamline at Diamond Light Source
in Materials Letters
Description | A host of new approaches developed allows "rich" tomography characterisation of structural and functional materials and components. We are able to map strain, grain orientation, damage etc. in 3D using neutron and synchrotron X-ray beams. |
Exploitation Route | Failure analysis, microstructure analysis, strength analysis, product optimisation New generation of non-destructive materials characterisation tools |
Sectors | Aerospace, Defence and Marine,Agriculture, Food and Drink,Chemicals,Construction,Education,Electronics,Energy,Environment,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology |
URL | http://www.korsunsky.org |
Description | The far-reaching impact of this research concerns 3D imaging in the widest sense: stress-strain, phase, grain orientation, etc. This kind of insight is in demand right across the range of technologies, cultural context, forensics, etc. |
Sector | Aerospace, Defence and Marine,Agriculture, Food and Drink,Chemicals,Construction,Creative Economy,Education,Electronics,Energy,Environment,Healthcare,Government, Democracy and Justice,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology,Transport |
Impact Types | Societal,Economic |
Description | DLS |
Organisation | Diamond Light Source |
Country | United Kingdom |
Sector | Private |
PI Contribution | We provide scientific leadership, ideas for tests, expertise and manpower for running complex experiments. |
Collaborator Contribution | Access to unique world class synchrotron beam lines. |
Impact | Multi-disciplinary - engineering, physics, chemistry; use of X-ray scattering, spectroscopy, imaging |
Description | Specialist Dental Group, Singapore |
Organisation | Specialist Dental Group |
Country | Singapore |
Sector | Hospitals |
PI Contribution | Presentations were made by AMK (PI) at events and meetings in Singapore during which the details of the insights into caries processes obtained in the course of the project were presented. |
Collaborator Contribution | During mutual visits of TKN to UK, and AMK (PI) to Singapore; joint preparation of publications was undertaken, as well as exchange of knowledge and expertise. In particular, advice was received from NTK on caries therapy procedures in Singapore. |
Impact | Publications as found in the literature, preparation of patent applications |
Start Year | 2010 |