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Investigation of the Influence of Grinding on Regions near the Surface of Steel by Ultrasonic Surface Waves
Author(s) -
Schneider D.,
Herrmann K.,
Brenner B.,
Schläfer D.,
Winderlich B.
Publication year - 1986
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170210720
Subject(s) - residual stress , anisotropy , materials science , barkhausen effect , grinding , ultrasonic sensor , surface layer , surface (topology) , residual , annealing (glass) , nondestructive testing , surface finish , texture (cosmology) , deformation (meteorology) , composite material , optics , acoustics , layer (electronics) , geometry , physics , mathematics , magnetization , image (mathematics) , quantum mechanics , algorithm , artificial intelligence , magnetic field , computer science
The applicability of surface wave velocity measurements as a nondestructive test method to investigations of deformation layers with preferred orientations and residual stresses has been examined at steel C70W2. The residual stresses in various directions parallel to the surface have been detected from changes of velocity caused by a stress‐free annealing. From the anisotropy and the frequency dependence of velocity the existence of a surface layer with preferred orientations has been deduced and such characteristic parameters as preferred orientation and depth have been estimated. The results have been compared and completed with X‐ray texture investigations and data from Barkhausen noise.