Defect localization by an extended laser source on a hemisphere

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http://hdl.handle.net/10138/333294

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Veira Canle , D , Mäkinen , J M K , Blomqvist , R , Gritsevich , M , Salmi , A & Haeggström , E 2021 , ' Defect localization by an extended laser source on a hemisphere ' , Scientific Reports , vol. 11 , no. 1 , 15191 . https://doi.org/10.1038/s41598-021-94084-w

Title: Defect localization by an extended laser source on a hemisphere
Author: Veira Canle, Daniel; Mäkinen, Joni Mikko Kristian; Blomqvist, Richard; Gritsevich, M.; Salmi, Ari; Haeggström, Edward
Contributor organization: Department of Physics
Materials Physics
Date: 2021-07-26
Language: eng
Number of pages: 7
Belongs to series: Scientific Reports
ISSN: 2045-2322
DOI: https://doi.org/10.1038/s41598-021-94084-w
URI: http://hdl.handle.net/10138/333294
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.
Subject: 114 Physical sciences
Engineering
Materials Science
physics
ACOUSTIC-WAVE PROPAGATION
LAMB WAVE
CIRCUMFERENTIAL WAVES
MECHANICAL-PROPERTIES
GUIDED-WAVES
SCATTERING
GENERATION
CYLINDER
HOLE
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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