Progress on the ultrasonic testing and laser thermography techniques for NDT of tokamak plasma-facing components

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dc.contributor.authorPei, Cuixiang
dc.contributor.authorLiu, Haochen
dc.contributor.authorQiu, Jinxing
dc.contributor.authorLiu, Tianhao
dc.contributor.authorChen, Zhenmao
dc.date.accessioned2019-11-14T11:27:32Z
dc.date.available2019-11-14T11:27:32Z
dc.date.issued2019-06-24
dc.description.abstractDuring manufacturing and operation, different kinds of defects, e.g., delamination or surface cracks, may be generated in the plasma-facing components (PFCs) of a Tokamak device. To ensure the safety of the PFCs, various kinds of nondestructive testing (NDT) techniques are needed for different defect and failure mode. This paper gives a review of the recently developed ultrasonic testing (UT) and laser thermography methods for inspection of the delamination and surface cracks in PFCs. For monoblock W/Cu PFCs of divertor, the bonding quality at both W-Cu and Cu-CuCrZr interfaces was qualified by using UT with a focus probe during manufacturing. A noncontact, coupling-free and flexible ultrasonic scanning testing system with use of an electromagnetic acoustic transducer and a robotic inspection manipulator was introduced then for the in-vessel inspection of delamination defect in first wall (FW). A laser infrared thermography testing method is highlighted for the on-line inspection of delamination defect in FW through the vacuum vessel window of the Tokamak reactor. Finally, a new laser spot thermography method using laser spot array source was described for the online inspection of the surface cracks in FW.en_UK
dc.identifier.citationPei C, Liu H, Qiu J, et al., (2019) Progress on the ultrasonic testing and laser thermography techniques for NDT of tokamak plasma-facing components. Theoretical and Applied Mechanics Letters, Volume 9, Issue 3, May 2019, pp. 180-187en_UK
dc.identifier.issn2095-0349
dc.identifier.urihttps://doi.org/10.1016/j.taml.2019.03.011
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/14731
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectPlasma-facing componenten_UK
dc.subjectPlasma-facing componentsen_UK
dc.subjectUltrasonic testingen_UK
dc.subjectLaser thermographyen_UK
dc.subjectDelaminationen_UK
dc.subjectSurface cracken_UK
dc.titleProgress on the ultrasonic testing and laser thermography techniques for NDT of tokamak plasma-facing componentsen_UK
dc.typeArticleen_UK

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