Department of engineering systems reliability and durability
Head of department – D.Sc., Professor V. P. Poshyvalov
- The complex of apparatuses for the electroforming-based manufacturing of minimum-weight thin-walled antenna/waveguide devices and solar concentrators comprises:
Apparatuses for the manufacture of large-size all-metal parabolic antennas and solar concentrators (Fig. 1) (diameter 0.5÷1.6 m, thickness 0.2÷0.5 mm (Inventor’s Certificate No 1611995 USSR , IPC4 G01. Publ. 08.08.1990. Inventors: V. S. Gudramovich, A. P. Gaiduchenko, A. I. Kovalenko).Apparatuses for the manufacturing of various waveguides (Fig. 2): horn and pyramidal antennas, in particular conical ones with grown-in beam-shaping ribs, slot antennas, and antenna arrays.Apparatuses for the manufacturing of segments of parabolic antennas of a ground antenna range made up of a thin (0.2÷0.4 mm) parabolic reflective layer and a reinforcing layer of epoxide compound (50÷80 mm) and compound cone concentrators for photoelectricity production (ground solar plants and spacecraft solar panels) (Fig. 3).
The uniqueness and value of the complex are determined by its versatility and the high performance characteristics of its products, which are used in space engineering, radio astronomy, and solar power engineering.
2. The complex of experimental setups for the study of the strength and carrying capacity of shell structures includes 4 proprietary setups and 8 standard ones.
Shell structure long-time strength and creep test setup (Fig. 4) (Inventor’s Certificate No 930056 USSR, IPC G01 No 3/08. Publ. 23.05.1982, Bul. No 19. Inventors: V. S. Gudramovich, A. P. Gaiduchenko, M. F. Demeshko, L. V. Mikhailenko). The setup has a base that mounts shell fastener assemblies, a screw mechanism, and a multistage lever system whereby a specified test load level is provided. The smooth movement of the shell fastener assemblies rules out additional pulse loads. Shells can be heated to elevated temperatures in a special electric furnace or using heaters.setups to study the carrying capacity of shell-and-rod structures at arbitrary local loads and under combined loading with an axial force and an external pressure under elastoplastic deformation.
setups to study the carrying capacity of shell-and-rod structures at arbitrary local loads and under combined loading with an axial force and an external pressure under elastoplastic deformation.
The value of the complex is determined by the fact that it permits a variety of experiments (mode of deformation, stability, and ultimate loads) on models and full-scale structures.
| OFFICE ADDRESS: | Institute of Technical Mechanics , 15 Leshko-Popelya St., Dnipro, Ukraine 49005 |
| E-MAIL: | poshivalov.v.p@nas.gov.ua vposhivalov@gmail.com |
