The generalized model of interaction of ultrasonic sh-polarization wave with 2d strain field in a plane layer
Journal Title: Вісник Тернопільського національного технічного університету - Year 2017, Vol 85, Issue 1
Abstract
Within the framework of previously developed mathematical model of small elastic perturbations propagation in homogeneously strained elastic continuum a stationary problem for interaction of a narrow ultrasonic beam of SH polarization waves with an elastic layer under plane deformation has been formulated. In the problem the phenomenon of interference of reflected and refracted waves on surface of including small elastic perturbations in strained solid has been taken into account. The problem was solved by the iterative method. With use the approximation of geometric optics the parameters of reflected and refracted waves in the system «elastic half-space – the layer – elastic half-space» has been obtained. The influence of plane strain parameters on the coefficients of reflected and refracted waves has been studied.
Authors and Affiliations
Vasyl Chekurin, Oksana Kravchyshyn
Rationing signals from eddy current transducer for faithful comparison
The problem of detecting metal objects in different environments has always been important. Optimal for dichotomous distinction metals are impulsive VLF metal type. Transmitting antenna of the metal detector emits primar...
Modeling of the fatigue crack growth after overload-underload in aluminum alloy D16T
Experimental investigations have been carried out and the main regularities of the fatigue crack growth (FCG) have been determined under single overload and complex overload – underload in the alloy D16T. It was found th...
The influence of corrosive environment on fatigue life of the t-shaped welded joints
The influence of corrosive environment (3% NaCl, high moisture and increased temperature and neutral salt fog and increased temperature) on the characteristics of fatigue resistance of T-welded joints of low alloy struct...
Influence of threshing drum's disbalance in combine harvester on its vibration
In this paper research of threshing drum’s disbalance in combine harvester is presented. Modern threshing drum of tangential type in combine harvester are made open. Central and extreme disks are mounted on the cylinder...
Investigation of the power-consuming mower drive operation
The problems of raising operating efficiency of segment–pin mower are analysed. Difficulties, which occur during the operation of such mower drives, have been analysed. The ways to get rid of these problems have been ana...