Title :
Estimation of the residual strain in magnetic metals by using the ultrasonic method
Author :
Hatafuku, H. ; Sarudate, C. ; Konno, A.
Author_Institution :
Iwate Univ., Morioka, Japan
Abstract :
Summary form only given. The magnetic properties of most ferromagnetic materials change with the application of stress. When a longitudinal ultrasonic wave is transmitted to the magnetic metals, a high frequency magnetic field is generated in the specimen from the reciprocal effect of magnetostriction. The high frequency magnetic field is generated in the nodes and the ultrasonic stationary state is formed in materials. The electromotive force (EMF) due to the high frequency magnetic field is observed by the sensing coil, which is called the magnetoacoustic effect (MAE). The purpose of this study is to estimate the residual stress in the 45 Permalloy rod specimens by transmitting ultrasonic waves.
Keywords :
Permalloy; ferromagnetic materials; internal stresses; magnetoacoustic effects; magnetostriction; ultrasonic materials testing; ultrasonic transmission; 45 Permalloy rod; FeNi; ferromagnetic materials; high frequency magnetic field; induced EMF; longitudinal ultrasonic waves; magnetic metals; magnetoacoustic effect; magnetostriction; residual strain; residual stress; sensing coil; ultrasonic stationary state; ultrasonic wave transmission; Coils; Frequency; Magnetic field induced strain; Magnetic fields; Magnetic materials; Magnetic properties; Magnetoacoustic effects; Magnetostriction; Residual stresses; Stationary state;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001386
