Dislocation-Microstructure Interaction at a Crack Tip - In Search of a Driving Force for Short Crack Growth
Lead Research Organisation:
University of Southampton
Department Name: Faculty of Engineering & the Environment
Abstract
Abstracts are not currently available in GtR for all funded research. This is normally because the abstract was not required at the time of proposal submission, but may be because it included sensitive information such as personal details.
Organisations
- University of Southampton (Lead Research Organisation)
- Defence Science & Technology Laboratory (DSTL) (Collaboration)
- National Aeronautics and Space Administration (NASA) (Collaboration)
- Alstom (Collaboration)
- University of Warwick (Collaboration)
- Rolls Royce Group Plc (Collaboration)
- University of Rwanda (Collaboration)
People |
ORCID iD |
| Philippa Reed (Principal Investigator) | |
| Ian Sinclair (Co-Investigator) |
Publications
Farukh F
(2016)
Realistic microstructure-based modelling of cyclic deformation and crack growth using crystal plasticity
in Computational Materials Science
Tan Y
(2023)
The behavior of anisotropic fatigue short crack initiation and propagation for a directionally solidified superalloy CM247LC at room temperature
in Fatigue & Fracture of Engineering Materials & Structures
Jiang R
(2018)
Strain accumulation and fatigue crack initiation at pores and carbides in a SX superalloy at room temperature
in International Journal of Fatigue
Jiang R
(2020)
Fatigue crack growth mechanisms in powder metallurgy Ni-based superalloys-A review
in International Journal of Fatigue
Kim D
(2023)
Microstructural and oxidation effects on fatigue crack initiation mechanisms in a turbine disc alloy
in Journal of Materials Science
Jiang R
(2017)
Characterisation of strain localisation processes during fatigue crack initiation and early crack propagation by SEM-DIC in an advanced disc alloy
in Materials Science and Engineering: A
Zhao Y
(2022)
Characterisation of strain localisation under cyclic loading at 450 °C by SEM-DIC in a PM Ni-based superalloy
in Materials Science and Engineering: A
Jiang R
(2015)
Effects of microstructures on fatigue crack initiation and short crack propagation at room temperature in an advanced disc superalloy
in Materials Science and Engineering: A
Tan Y
(2021)
Data rich imaging approaches assessing fatigue crack initiation and early propagation in a DS superalloy at room temperature
in Materials Science and Engineering: A
Pang H
(2015)
Comparison of fatigue crack propagation in nickel base superalloys RR1000 and Udimet 720Li
in Materials Science and Technology
Kim D
(2022)
Microstructural influences on fatigue crack initiation and early propagation in Ni-based superalloy
in Materials Science and Technology
| Description | Early stage fatigue crack growth in aeroengine turbine disc and blade materials is very hard to predict. We have imaged the complex crack paths being taken - these are affected by crystal orientations (how the atoms are lined up) as well as the temperature and environment. Understanding these complex crack paths by imaging of the local strain accumulation across grain and twin boundaries is feeding into modelling work at other Universities. We used scanning electron microscopy-digital image correlation (SEM-DIC) to measure these local strains and X-ray tomography to visualise the 3D structure of very small fatigue cracks in polycrystalline, directionally solidified and single crystal alloys |
| Exploitation Route | The understanding of the factors controlling early stage crack growth can be used by aeroengine and power generation turbine manufacturers to extend the safe operation of these turbines, our experimental results have fed directly into the modelling work of our partners |
| Sectors | Aerospace, Defence and Marine,Energy,Manufacturing, including Industrial Biotechology |
| Description | The SEM based DIC work has been developed with MatchID (a DIC software company) They are now opening a UK branch in Chilworth (Southampton Science Park) |
| First Year Of Impact | 2021 |
| Sector | Aerospace, Defence and Marine |
| Impact Types | Economic |
| Description | Fundamental investigation of crack initation and propagation prcesses in DS turbine blade materials at intermediate temperatures |
| Amount | £60,000 (GBP) |
| Organisation | Chinese Scholarship Council |
| Sector | Charity/Non Profit |
| Country | China |
| Start | 10/2019 |
| End | 09/2023 |
| Description | Oxidation fatigue propagation processes at intermediate temperatures in single crystal turbine blades |
| Amount | £144,862 (GBP) |
| Organisation | Rolls Royce Group Plc |
| Sector | Private |
| Country | United Kingdom |
| Start | 10/2021 |
| End | 09/2025 |
| Description | RR PhD Co-sponsorship |
| Amount | £62,808 (GBP) |
| Organisation | Rolls Royce Group Plc |
| Sector | Private |
| Country | United Kingdom |
| Start | 10/2022 |
| End | 09/2026 |
| Description | Schlumberger Faculty for the Future |
| Amount | $50,000 (USD) |
| Organisation | Schlumberger Limited |
| Sector | Private |
| Country | United States |
| Start | 09/2014 |
| End | 09/2017 |
| Description | Alstom power |
| Organisation | Alstom |
| Department | Alstom UK |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | Experimental and computational study of fatigue-oxidation damage and crack growth in single crystal and directionally solidified turbine blade superalloys for gas turbines in power generation applications. |
| Collaborator Contribution | Supply of materials and technical advice; attendance at project review meetings. |
| Impact | Conference and journal publications |
| Start Year | 2013 |
| Description | NASA |
| Organisation | National Aeronautics and Space Administration (NASA) |
| Country | United States |
| Sector | Public |
| PI Contribution | Experimental and computational study of critical fatigue-oxidation damage processes of NASA superalloy LSHR for application in gas turbines. |
| Collaborator Contribution | Supply of materials and technical advice. |
| Impact | Journal and conference publications. |
| Start Year | 2010 |
| Description | Rolls Royce |
| Organisation | Rolls Royce Group Plc |
| Country | United Kingdom |
| Sector | Private |
| PI Contribution | We are providing information on crack growth behaviour on alloys of interest to Rolls Royce, this has recently extended to looking at effects of shot peening on fatigue life predictions as well as crack growth behaviour in different alloys at high and low temperature. They are also now sponsoring a new PhD project (ICASE) Started October 2021 |
| Collaborator Contribution | Rolls Royce have provided alloys for us to test and attend technical review meetings to discuss our results, they have also now awarded us an ICASE to studt turbine blade failure problems (2021-2025) |
| Impact | joint publications, contribution to technical reviews, service failure investigations and advice |
| Start Year | 2014 |
| Description | Swansea |
| Organisation | University of Rwanda |
| Country | Rwanda |
| Sector | Academic/University |
| PI Contribution | We are working on fatigue testing at high temperatures - we provide crack propagation results |
| Collaborator Contribution | Swansea have great expertise on strain controlled testing, something we cannot contribute |
| Impact | joint publications are planned |
| Start Year | 2014 |
| Description | Warwick |
| Organisation | University of Warwick |
| Department | Department of Physics |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Collaboration on an EPSRC programme that has now finished, but we have tested samples from other programmes that are of mutual interest that led to joint publications and Warwick allowed us access to advanced characterisation facilities and input from their staff |
| Collaborator Contribution | Collaboration on an EPSRC programme that has now finished, but we have tested samples from other programmes that are of mutual interest that led to joint publications and Warwick allowed us access to advanced characterisation facilities and input from their staff |
| Impact | Joint publications listed |
| Start Year | 2015 |
| Description | dstl |
| Organisation | Defence Science & Technology Laboratory (DSTL) |
| Country | United Kingdom |
| Sector | Public |
| PI Contribution | Provide guidance for life assessment of gas turbines |
| Collaborator Contribution | Providing technical advice and attending project review meetings. |
| Impact | Journal and conference publications |
| Start Year | 2013 |
| Description | Science and Engineering Day, UOS |
| Form Of Engagement Activity | Participation in an open day or visit at my research institution |
| Part Of Official Scheme? | No |
| Geographic Reach | Regional |
| Primary Audience | Public/other audiences |
| Results and Impact | We ran a stand at our University's award winning Science and Engineering Day on 22nd March 2014, a large number of people from the local region attended. We ran it again in March 2015 increased visibility of materials science applied to turbine systems for the general public |
| Year(s) Of Engagement Activity | 2014,2015 |