| 2007 №09 (10) | 2007 №09 (01) |
The Paton Welding Journal, 2007, #9, 49-50 pages
Determination of main directions and values of residual stresses in highly textured materials by acoustic method
O.I. Gushcha1, V.A. Brodovoj1, V.N. Smilenko2
1E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.2SE SRI «Kvant», Kiev, Ukraine
Abstract
For the purpose of determining directions of action of main stresses in solid media with high attenuation of ultrasonic oscillations and in anisotropic media, ultrasonic longitudinal oscillations and shear oscillations, polarized in three directions, are introduced into them perpendicular to the plain of action of the stresses. The first direction of polarization is selected along direction of anisotropy with an unknown angle to the main direction. Two other polarization directions are selected inclined to the first one at acute angles, which are equal in value and opposite in signs. The velocity of propagation of ultrasonic oscillations for these directions is investigated. Angle of inclination of main stresses to the selected initial direction and values of these stresses are determined on the basis of these results.
Keywords: main directions, residual stresses, anisotropic media, ultrasonic oscillations, direction of polarization
References
1. Guz, A.N., Makhort, F.G., Gushcha, O.I. (1977) Introduction into acustoelasticity. Kiev: Naukova Dumka.2. Gushcha, O.I., Makhort, F.G. (1983) Acoustic method of stress determination in solid media. Byul. Izobreten., 36