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
Song X
(2012)
Residual stress measurement in thin films at sub-micron scale using Focused Ion Beam milling and imaging
in Thin Solid Films
Song X
(2014)
Residual stresses and microstructure in Powder Bed Direct Laser Deposition (PB DLD) samples
in International Journal of Material Forming
Song X
(2013)
Residual stresses in Linear Friction Welding of aluminium alloys
in Materials & Design
BAIMPAS N
(2014)
RICH TOMOGRAPHY TECHNIQUES FOR THE ANALYSIS OF MICROSTRUCTURE AND DEFORMATION
in International Journal of Computational Methods
Salvati E
(2017)
Separating plasticity-induced closure and residual stress contributions to fatigue crack retardation following an overload
in Journal of the Mechanics and Physics of Solids
Sui T
(2017)
Strain softening of nano-scale fuzzy interfaces causes Mullins effect in thermoplastic polyurethane.
in Scientific reports
Korsunsky A
(2011)
Strain tomography of polycrystalline zirconia dental prostheses by synchrotron X-ray diffraction
in Acta Materialia
Baimpas N
(2013)
Stress evaluation in thin films: Micro-focus synchrotron X-ray diffraction combined with focused ion beam patterning for do evaluation
in Thin Solid Films
Sui T.
(2014)
Structure-property characterization of the dentine-enamel junction (DEJ)
in Lecture Notes in Engineering and Computer Science
Zhao J
(2024)
Surface dislocation nucleation by wedge indenter contacts
in Materials Science and Technology
Constantinescu A
(2013)
Symbolic and numerical solution of the axisymmetric indentation problem for a multilayered elastic coating
in International Journal of Solids and Structures
Xie M
(2013)
Texture analysis in cubic phase polycrystals by single exposure synchrotron X-ray diffraction
in Journal of Applied Physics
Baimpas N
(2013)
The application of geometry corrections for Diffraction Strain Tomography (DST) analysis of a Ni-base superalloy blade
in Powder Diffraction
Mostafavi M
(2013)
Three-dimensional crack observation, quantification and simulation in a quasi-brittle material
in Acta Materialia
Clark JN
(2013)
Ultrafast three-dimensional imaging of lattice dynamics in individual gold nanocrystals.
in Science (New York, N.Y.)
Sui T.
(2013)
Ultrastructural changes in burnt dental tissue revealed by synchrotron x-ray scattering
in Lecture Notes in Engineering and Computer Science
Korsunsky A.M.
(2012)
X-ray texture analysis and imaging of engineering materials at oxford HEX-lab
in Lecture Notes in Engineering and Computer Science
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 |