Magnetoelastic Acoustic Emission

Some Concepts on Remagnetization of Ferromagnets.- Barkhausen Effect and Emission of Elastic Waves Under Remagnetization of Ferromagnet.- Models of MAE and Interaction of Magnetic Field with Cracks.- Models of Hydrogen Cracks Initiation as Sources of Elastic Waves Emission.- Estimation of Hydrogen Effect on Metals Fracture.- Determination of Magnetic Ductility and Residual Magnetization of Steels.- Methodology of Investigation the Hydrogen Influence on Ferromagnet.- Mathematical Models of MAE Signal and its Informative Parameters.- Evaluation of Electrolytically Absorbed Hydrogen by MAE Parameters.

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• Ensaio de materiais
• Acústica e engenharia de som
• Mecânica ondulatória (vibração e acústica)
• Eletromagnetismo eletricidade, magnetismo e
• Engenharia de produção

Barkhausen Effect;Magnetic Ductility;Ferritic-Pearlitic Steels;Remagnetization of Ferromagnets;Elastic Waves;Metals Fracture;Thin-walled ferromagnets;Domain wall;Hydrogen Cracks Initiation;Residual Magnetization