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
Design source errors analysis in the angle measure devices to the precision
The results of calculating the total error testing support rotation angle satellite antenna system. The analysis suggested calculating the optimum design rotation device, in which the total working angle of rotation erro...
Assessment methodology of the stress-strain state in the heat-affected zone of austenitic alloys using a grid method
Austenitic steels and nickel-based alloys have sufficient sensitivity to hot cracking during fusion welding. Analysis of thermal stress state in the vicinity of the weld pool, including with the use of computer models to...
The numerical anaysis of stressed state of multilayered coverings with defects on an rigid foundation
Multilayered coverings can be considered as thick plates resting on a rigid substrate. For research of stress-strain state (SSS) of multilayered plates on an rigid foundation the refined structural-continual model of mom...
Elastic deformations and anomalously high cutting ability of a polymer solution jet
The article to determine peculiarities of macromolecule deformation behavior under conditions of a jet-shaping head that would allow to solve the issue related to the mechanism of increasing water-jet cutting power with...
Feasibility study of an auger conveyor performance of the haulm removing module
Nowadays, the available haulm removing machines and mechanisms do not fully meet the agronomic requirements for the process of harvesting roots. In this paper, the need to design new haulm removers and improve the availa...