1. Defect localization by an extended laser source on a hemisphere
- Author
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Veira Canle, Daniel, Mäkinen, Joni Mikko Kristian, Blomqvist, Richard, Gritsevich, M., Salmi, Ari, Haeggström, Edward, Department of Physics, and Materials Physics
- Subjects
Physics ,Science ,MECHANICAL-PROPERTIES ,114 Physical sciences ,Article ,Materials science ,CIRCUMFERENTIAL WAVES ,GUIDED-WAVES ,ACOUSTIC-WAVE PROPAGATION ,Engineering ,SCATTERING ,Medicine ,HOLE ,CYLINDER ,LAMB WAVE ,GENERATION - Abstract
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). Open access funded by University of Helsinki Library.
- Published
- 2021