Sizing the length of surface breaking cracks using vibrothermography

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Ikusi/Ireki
Data
2020-03-16
Egilea
Cavallone, Caterina
Colom Serra, Mateu ORCID
Mendioroz Astigarraga, María Aránzazu ORCID
Salazar Hernández, Agustín ORCID
Palumbo, Davide
Galietti, Umberto
Metadata
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NDT & E International 112 : (2020) // Article ID 102250
URI
http://hdl.handle.net/10810/63035
Laburpena
Ultrasound excited thermography is used to determine the length of vertical surface breaking cracks. Two methods are proposed based on the analysis of the maximum temperature reached along the line containing the crack and the time at which the maximum temperature occurs. It is shown that, for short bursts, the full width at half maximum of the maximum temperature curve provides the crack length, and that the time at which the maximum temperature occurs increases beyond the crack tip. The range of application of the methods is analysed and the validity is checked taking data on samples containing artificial calibrated cracks.
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© 2020 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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