The paper describes the experimental complex designed for impact testing of thin-walled structural elements, as well as the results of experiments on one-time and repeated impact deformation of square plates. The experimental complex uses an induction-dynamic motor as loading device, which allows to conduct repeated impact loading. Impact test were done on thin square steel hinged plates. The time variation of strain components were determined by use of strain gauges and analog-digital converter connected to PC. Experiments on repeated impact loading show that averaged number of cycles to plate's punching is equal to 79 cycles, which coincides to low-cycle area.

Keywords: impact, deformation, fracture, thin-walled structures, plate. Experimental investigations

The thermal stabilization system of combined equipment based on methods evaporation-condensation and liquid cooling was engineered and produced.  Some constructive decision of device fluid cooling, results of heat and hydromechanics simulations and testing was presented.

Keywords: thermal stabilization system, combined equipment, cooling, thermal simulation

The paper proposes a new concept of benchmark system on the railways for the control of the geometric parameters of paths. It can be used for the preparation of projects of reconstruction and repair of roads.

Keywords: reference system, the rotation angle slopes, lateral leveling, fiducially marks.

Development of the analysis methodic of each information collection point complex oscillation for the field balancing is exhibited. All types of the rotor drives are observed, for each of them the consequence and conditions of the test runs are determined. Algorithm for extracting the informative harmonic (that is defined only by the unbalance of the rotor) has been made.

Keywords: Rotor, Field Balancing, Informative Harmonic, Testing, Calculation.