Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation
Abstract A primary target towards the clean-up operation of the Fukushima disaster is the retrieval of Molten Core-Concrete Interaction (MCCI) products, presently residing on the basement of the damaged nuclear reactor Units 1–3. MCCI is a fusion of materials, composed of both nuclear fuel cladding...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-07-01
|
| Series: | npj Materials Degradation |
| Online Access: | https://doi.org/10.1038/s41529-022-00264-y |
| _version_ | 1811219298516992000 |
|---|---|
| author | Charilaos Paraskevoulakos Joachim Paul Forna-Kreutzer Keith R. Hallam Christopher P. Jones Thomas B. Scott Clemence Gausse Dong Liu Christina Reinhard Claire L. Corkhill Mahmoud Mostafavi |
| author_facet | Charilaos Paraskevoulakos Joachim Paul Forna-Kreutzer Keith R. Hallam Christopher P. Jones Thomas B. Scott Clemence Gausse Dong Liu Christina Reinhard Claire L. Corkhill Mahmoud Mostafavi |
| author_sort | Charilaos Paraskevoulakos |
| collection | DOAJ |
| description | Abstract A primary target towards the clean-up operation of the Fukushima disaster is the retrieval of Molten Core-Concrete Interaction (MCCI) products, presently residing on the basement of the damaged nuclear reactor Units 1–3. MCCI is a fusion of materials, composed of both nuclear fuel cladding and neighbouring structural components. Determining the currently unknown, physical and mechanical properties of MCCI is essential for successful and timely retrieval. In this paper, we aim to experimentally quantify the mechanical properties of a material fabricated to resemble MCCI. A small-scale representative specimen was mechanically tested using Hertzian indentation stepwise loading. Synchrotron X-ray computed tomography was conducted at several loading stages to reveal the sample microstructure and mechanical degradation. The acquired tomograms were analysed by digital volume correlation to measure full-field displacements and strains developed within the sample volume. Young’s modulus and Poisson ratio were determined via this combined methodology. |
| first_indexed | 2024-04-12T07:23:51Z |
| format | Article |
| id | doaj.art-80e8c79e14d348b696d5fea857a1660c |
| institution | Directory Open Access Journal |
| issn | 2397-2106 |
| language | English |
| last_indexed | 2024-04-12T07:23:51Z |
| publishDate | 2022-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Materials Degradation |
| spelling | doaj.art-80e8c79e14d348b696d5fea857a1660c2022-12-22T03:42:15ZengNature Portfolionpj Materials Degradation2397-21062022-07-016111310.1038/s41529-022-00264-yInvestigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlationCharilaos Paraskevoulakos0Joachim Paul Forna-Kreutzer1Keith R. Hallam2Christopher P. Jones3Thomas B. Scott4Clemence Gausse5Dong Liu6Christina Reinhard7Claire L. Corkhill8Mahmoud Mostafavi9Interface Analysis Centre, School of Physics, H. H. Wills Physics Laboratory, University of BristolBristol Composites Institute (ACCIS), Department of Aerospace Engineering, University of BristolInterface Analysis Centre, School of Physics, H. H. Wills Physics Laboratory, University of BristolInterface Analysis Centre, School of Physics, H. H. Wills Physics Laboratory, University of BristolInterface Analysis Centre, School of Physics, H. H. Wills Physics Laboratory, University of BristolImmobilisation Science Laboratory, Department of Materials Science and Engineering, University of SheffieldSchool of Physics, H. H. Wills Physics Laboratory, University of BristolDiamond Light Source Ltd, Harwell Science and Innovation CampusImmobilisation Science Laboratory, Department of Materials Science and Engineering, University of SheffieldDepartment of Mechanical Engineering, University of BristolAbstract A primary target towards the clean-up operation of the Fukushima disaster is the retrieval of Molten Core-Concrete Interaction (MCCI) products, presently residing on the basement of the damaged nuclear reactor Units 1–3. MCCI is a fusion of materials, composed of both nuclear fuel cladding and neighbouring structural components. Determining the currently unknown, physical and mechanical properties of MCCI is essential for successful and timely retrieval. In this paper, we aim to experimentally quantify the mechanical properties of a material fabricated to resemble MCCI. A small-scale representative specimen was mechanically tested using Hertzian indentation stepwise loading. Synchrotron X-ray computed tomography was conducted at several loading stages to reveal the sample microstructure and mechanical degradation. The acquired tomograms were analysed by digital volume correlation to measure full-field displacements and strains developed within the sample volume. Young’s modulus and Poisson ratio were determined via this combined methodology.https://doi.org/10.1038/s41529-022-00264-y |
| spellingShingle | Charilaos Paraskevoulakos Joachim Paul Forna-Kreutzer Keith R. Hallam Christopher P. Jones Thomas B. Scott Clemence Gausse Dong Liu Christina Reinhard Claire L. Corkhill Mahmoud Mostafavi Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation npj Materials Degradation |
| title | Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation |
| title_full | Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation |
| title_fullStr | Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation |
| title_full_unstemmed | Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation |
| title_short | Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlation |
| title_sort | investigating the mechanical behaviour of fukushima mcci using synchrotron xray tomography and digital volume correlation |
| url | https://doi.org/10.1038/s41529-022-00264-y |
| work_keys_str_mv | AT charilaosparaskevoulakos investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT joachimpaulfornakreutzer investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT keithrhallam investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT christopherpjones investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT thomasbscott investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT clemencegausse investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT dongliu investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT christinareinhard investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT clairelcorkhill investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation AT mahmoudmostafavi investigatingthemechanicalbehaviouroffukushimamcciusingsynchrotronxraytomographyanddigitalvolumecorrelation |