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
Lunt A
(2017)
Characterisation of nanovoiding in dental porcelain using small angle neutron scattering and transmission electron microscopy.
in Dental materials : official publication of the Academy of Dental Materials
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
Salvati E
(2017)
An analysis of macro- and micro-scale residual stresses of Type I, II and III using FIB-DIC micro-ring-core milling and crystal plasticity FE modelling
in International Journal of Plasticity
Salvati E
(2017)
Eigenstrain reconstruction of residual strains in an additively manufactured and shot peened nickel superalloy compressor blade
in Computer Methods in Applied Mechanics and Engineering
Romano Brandt L
(2017)
Probing the deformation and fracture properties of Cu/W nano-multilayers by in situ SEM and synchrotron XRD strain microscopy
in Surface and Coatings Technology
Sheng Y
(2017)
Photoluminescence Segmentation within Individual Hexagonal Monolayer Tungsten Disulfide Domains Grown by Chemical Vapor Deposition.
in ACS applied materials & interfaces
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
Robinson I
(2017)
Materials & Design Virtual Special Issue Editorial: Analysis of material microstructure and defects using X-ray and neutron beams - Size-Strain
in Materials & Design
Sui T
(2017)
Strain softening of nano-scale fuzzy interfaces causes Mullins effect in thermoplastic polyurethane.
in Scientific reports
Pandey A
(2017)
In situ and operando studies of structural and functional materials and systems using electron, ion and X-ray microscopy
in Materials & Design
Kirkwood H
(2017)
High resolution imaging and analysis of residual elastic strain in an additively manufactured turbine blade
in International Journal of Nanotechnology
Sebastiani M
(2017)
Residual stress evaluation at the micro- and nano-scale: Recent advancements of measurement techniques, validation through modelling, and future challenges
in Materials & Design
Lunt A
(2018)
On the origins of strain inhomogeneity in amorphous materials
in Scientific Reports
Salvati E
(2018)
Nanoscale structural damage due to focused ion beam milling of silicon with Ga ions
in Materials Letters
Uzun F
(2019)
On the application of principles of artificial intelligence for eigenstrain reconstruction of volumetric residual stresses in non-uniform Inconel alloy 740H weldments
in Finite Elements in Analysis and Design
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 |