Resolution of multiple semi-infinite delaminations using lock-in infrared thermography
Salazar, A. ; Sagarduy-Marcos, D. ; Rodríguez-Aseguinolaza, J. ; Mendioroz, A. ; Ciria, J.C. (Universidad de Zaragoza) ; Celorrio, R. (Universidad de Zaragoza)
Resumen: Delaminations are flat subsurface defects parallel to the sample surface. Recently we have demonstrated that lock-in infrared thermography, with optical excitation, allows sizing the geometrical parameters (length, depth and thickness) of a semi-infinite delamination. Here, we analyse the ability of this technique to resolve several parallel and semi-infinite delaminations. First, we develop an analytical method (based on the thermal quadrupoles) together with a numerical formulation to calculate the surface temperature of a sample containing several semi-infinite parallel delaminations. We verify that both methods provide the same temperature values, indicating their consistency. Then, we study the ability of lock-in infrared thermography to resolve two close delaminations. In particular we focus on two main configurations: two non-overshadowed delaminations and two superimposed delaminations. Next, after analysing the inverse problem in terms of residual function minimization, we develop a dedicated parametric estimation procedure able to retrieve the geometry of the studied defects. Finally, we test this procedure with synthetic temperature amplitude and phase data to retrieve the geometrical parameters of both delaminations.
Idioma: Inglés
DOI: 10.1016/j.ndteint.2024.103156
Año: 2024
Publicado en: NDT and E International 146 (2024), 103156 [9 pp.]
ISSN: 0963-8695
Tipo y forma: Article (Published version)
Área (Departamento): Área Matemática Aplicada (Dpto. Matemática Aplicada)
Área (Departamento): Área Ciencia Comput.Intelig.Ar (Dpto. Informát.Ingenie.Sistms.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
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Idioma: Inglés
DOI: 10.1016/j.ndteint.2024.103156
Año: 2024
Publicado en: NDT and E International 146 (2024), 103156 [9 pp.]
ISSN: 0963-8695
Tipo y forma: Article (Published version)
Área (Departamento): Área Matemática Aplicada (Dpto. Matemática Aplicada)
Área (Departamento): Área Ciencia Comput.Intelig.Ar (Dpto. Informát.Ingenie.Sistms.)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2024-06-19-13:22:53)
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Articles > Artículos por área > CC. de la Computación e Inteligencia Artificial
Articles > Artículos por área > Matemática Aplicada
Record created 2024-06-19, last modified 2024-06-19