Abstract The article reviews the capacities of acoustic emission method usage to assess technical condition and integrity thick-walled welded structures, quality control joints in multilayer welding. As a result analysis AE data, authors propose set informative parameters method, which form criterion space for separating reflected signals from defects interference.

Besnoitia besnoiti was first described by Besnoit & Robin (1912), who observed the thick-walled parasitic cysts in the skin of a chronically infected cow in Southern France. The crescentic organisms within the cysts, which they called spores, will be referred to as cyst forms or cyst organisms in this discussion , in contradistinction to proliferative forms which are encountered in macrophages ...

We find the spatial variation of material parameters for pressurized cylinders and spheres composed of either an incompressible Hookean, neo-Hookean, or Mooney–Rivlin material so that during their axisymmetric deformations either the in-plane shear stress or the hoop stress has a desired spatial variation. It is shown that for a cylinder and a sphere made of an incompressible Hookean material, ...

Abstract The use of lightweight metal cylinders is great significance to artillery weapon systems in terms significant mass reduction, service life extension, power consumption reduction and operational effectiveness. Based on the load conditions provided by classical internal ballistic theory, a high precision finite element model solved explicit integration algorithm with central difference. ...

The article deals with modeling and calculations of volumetric machine-building structures complex geometry. relevance the work lies in fact that its methodology results can help design massive structural elements shape, including cylinders powerful hydraulic presses. Attention is paid to problems reducing metal content products safe conditions their operation. Theoretical applied based on nume...