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NUMERICAL SIMULATION OF WAVE PROPAGATION IN WELD JOINTS INCLUDING A FLAW

Auteurs : Morad Grimes, Sofiane Haddad, Toufik Benkedidah
Année : 2012
Domaine : Electronique
Type : Communication
Conférence: 3ème Conférence Internationale sur le Soudage, le CND et l’Industrie des Matériaux et Alliages (IC-WNDT-MI’12)
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : simulation, FDTD method, Ultrasonic, weld joints

Résumé :

In this study, the process of wave propagation in weld joints including a flaw was simulated using elastic finite-difference time-domain (FDTD) method and a digitized cross-section photograph of actual test object as input data. In order to distinguish the different elements constituting the experiment (transducer, wedge of a probe, test object), different colors are assigned to these different materials. Each color contains information on material parameters, such as the velocity of longitudinal and transversal waves, and the material density