Defect localization by an extended laser source on a hemisphere.

Autor: Veira Canle D; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland. daniel.veiracanle@helsinki.fi., Mäkinen J; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland., Blomqvist R; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland., Gritsevich M; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland.; Finnish Geospatial Research Institute, Geodeetinrinne 2, 02430, Masala, Finland.; Institute of Physics and Technology, Ural Federal University, Mira Str. 19, 620002, Ekaterinburg, Russia., Salmi A; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland., Hæggström E; Department of Physics, Division of Material Physics, Faculty of Science, University of Helsinki, P.O.B. 64, 00014, Helsinki, Finland.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2021 Jul 26; Vol. 11 (1), pp. 15191. Date of Electronic Publication: 2021 Jul 26.
DOI: 10.1038/s41598-021-94084-w
Abstrakt: The primary goal of this study is to localize a defect (cavity) in a curved geometry. Curved topologies exhibit multiple resonances and the presence of hotspots for acoustic waves. Launching acoustic waves along a specific direction e.g. by means of an extended laser source reduces the complexity of the scattering problem. We performed experiments to demonstrate the use of a laser line source and verified the experimental results in FEM simulations. In both cases, we could locate and determine the size of a pit in a steel hemisphere which allowed us to visualize the defect on a 3D model of the sample. Such an approach could benefit patients by enabling contactless inspection of acetabular cups.
(© 2021. The Author(s).)
Databáze: MEDLINE
Externí odkaz: