Toward UO2 micro/macro machining: a laser processing approach

Linked to experimental data acquisition and to development of improved models, a better detailed description of the behaviour of the nuclear ceramics as regard to the fission gases release during thermal transient representative of nuclear accidents such as RIA (Reactivity Initiated Accident) and or...

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Autores principales:	Doualle Thomas, Reymond Matthieu, Pontillon Yves, Gallais Laurent
Formato:	article
Lenguaje:	EN
Publicado:	EDP Sciences 2021
Materias:	uo2 graphite laser ablation laser cutting finite element model Physics QC1-999
Acceso en línea:	https://doaj.org/article/9d73bbd1dcf84e8ba394ec7ee9866e42
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spelling	oai:doaj.org-article:9d73bbd1dcf84e8ba394ec7ee9866e422021-12-02T17:12:46ZToward UO2 micro/macro machining: a laser processing approach2100-014X10.1051/epjconf/202125307004https://doaj.org/article/9d73bbd1dcf84e8ba394ec7ee9866e422021-01-01T00:00:00Zhttps://www.epj-conferences.org/articles/epjconf/pdf/2021/07/epjconf_animma2021_07004.pdfhttps://doaj.org/toc/2100-014XLinked to experimental data acquisition and to development of improved models, a better detailed description of the behaviour of the nuclear ceramics as regard to the fission gases release during thermal transient representative of nuclear accidents such as RIA (Reactivity Initiated Accident) and or LOCA (LOss of Coolant Accident) requires access to local information within the fuel pellet, and no longer averaged over the whole of the pellet. One of the major challenge in this context is the sample size, which depends on the main objective of the study, typically from the order of a few hundred microns to millimeters. Few techniques allow this dynamic while being compatible with irradiated fuel constraints. Laser micromachining is a high precision non-contact material removal process that would be adapted to this dynamic. We present experimental and numerical studies, carried out in order to evaluate the possibility to apply this process for the preparation of irradiated UO2 samples of various dimensions. First, preliminary experimental and numerical works conduced on graphite, as model material, which have comparable properties (in particular their behaviours under laser irradiation and their melting point) in order to validate the feasibility, will be detailed. Afterwards, based on these results, we present our first results on UO2. The objective is to transfer the technique to non-irradiated UO2 and then to the irradiated material.Doualle ThomasReymond MatthieuPontillon YvesGallais LaurentEDP Sciencesarticleuo2graphitelaser ablationlaser cutting finite element modelPhysicsQC1-999ENEPJ Web of Conferences, Vol 253, p 07004 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	uo2 graphite laser ablation laser cutting finite element model Physics QC1-999
spellingShingle	uo2 graphite laser ablation laser cutting finite element model Physics QC1-999 Doualle Thomas Reymond Matthieu Pontillon Yves Gallais Laurent Toward UO2 micro/macro machining: a laser processing approach
description	Linked to experimental data acquisition and to development of improved models, a better detailed description of the behaviour of the nuclear ceramics as regard to the fission gases release during thermal transient representative of nuclear accidents such as RIA (Reactivity Initiated Accident) and or LOCA (LOss of Coolant Accident) requires access to local information within the fuel pellet, and no longer averaged over the whole of the pellet. One of the major challenge in this context is the sample size, which depends on the main objective of the study, typically from the order of a few hundred microns to millimeters. Few techniques allow this dynamic while being compatible with irradiated fuel constraints. Laser micromachining is a high precision non-contact material removal process that would be adapted to this dynamic. We present experimental and numerical studies, carried out in order to evaluate the possibility to apply this process for the preparation of irradiated UO2 samples of various dimensions. First, preliminary experimental and numerical works conduced on graphite, as model material, which have comparable properties (in particular their behaviours under laser irradiation and their melting point) in order to validate the feasibility, will be detailed. Afterwards, based on these results, we present our first results on UO2. The objective is to transfer the technique to non-irradiated UO2 and then to the irradiated material.
format	article
author	Doualle Thomas Reymond Matthieu Pontillon Yves Gallais Laurent
author_facet	Doualle Thomas Reymond Matthieu Pontillon Yves Gallais Laurent
author_sort	Doualle Thomas
title	Toward UO2 micro/macro machining: a laser processing approach
title_short	Toward UO2 micro/macro machining: a laser processing approach
title_full	Toward UO2 micro/macro machining: a laser processing approach
title_fullStr	Toward UO2 micro/macro machining: a laser processing approach
title_full_unstemmed	Toward UO2 micro/macro machining: a laser processing approach
title_sort	toward uo2 micro/macro machining: a laser processing approach
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/9d73bbd1dcf84e8ba394ec7ee9866e42
work_keys_str_mv	AT douallethomas towarduo2micromacromachiningalaserprocessingapproach AT reymondmatthieu towarduo2micromacromachiningalaserprocessingapproach AT pontillonyves towarduo2micromacromachiningalaserprocessingapproach AT gallaislaurent towarduo2micromacromachiningalaserprocessingapproach
_version_	1718381393265819648

Toward UO2 micro/macro machining: a laser processing approach

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