DETERMINATION OF BENDING STRESSES IN STEEL SPECIMENS BY THE ACOUSTOELASTICITY METHOD USING RAYLEIGH SURFACE WAVES
I. V. Erofeeva1,2, V. I. Erofeev1,2, V. M. Rodyushkin2
1Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
2Institute for Problems in Mechanical Engineering of the Russian Academy of Sciences - Branch of the Federal Research Center, Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia
Keywords: bending stress, acoustoelasticity, Rayleigh surface wave
Abstract
Results of an experimental study on the acoustoelasticity arising from the propagation of ultrasonic Rayleigh surface waves in a field of static bending stresses are presented. For a St. 20 steel specimen, the acoustoelastic effect is shown to differ under compression and tension. A calibration curve is constructed for Rayleigh surface waves, enabling their use for monitoring bending stresses-a capability not possible with bulk wave probing.
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