At present, all railways tend to increase the speed of passenger trains and axle loads in transportation of goods. These processes contribute to the improvement of rolling stocks and railway infrastructures. At the same time, there is a need to maintain a high level of safety in transportation. Therefore, experimental research and feasibility studies of the existing monitoring solutions are of the highest priority. Being experimental in nature, this study is aimed at increasing the reliability of the strain-gauge method in measurement of dynamic forces transferred from the wheel to the rail in real operating conditions. Rail strains were experimentally studied under bidirectional loading using a special-purpose impact device. Results of this research are presented in the paper. An experimental measuring section was created for recording loads. Strain gauges were installed on rails in several cross-sections. Rails were loaded with a special-purpose device, which was designed to adjust a loading force and shift a contact point. The structure of the loading device and its basic features are described in the paper.

Rolling surface defects of freight car wheels in motion increase the dynamic forces in the wheel and rail system and make their fatigue rupture more likely. Such defects are discovered in a timely manner using floor level strain gauging diagnostic complexes [1]. Strain gauges are used as the primary converters. A wheel pair passes along a section with strain gauges and rail deformations are recorded by which the parameters of the dynamic interaction of the wheel with the rail are defined.Signals from the strain gauges carry intrinsic equipment noises and external pulse or continuous inter ferences. These interferences are generated by automatic equipment or distance control systems, auto matic cab and wigwag signaling, etc. In addition, recorded signals contain an uninformative component that is related to nonlinearity and variation in rail base elasticity, external effects, and the path of wheel travel along the rail.The reliability of the control results is increased using hardware tools in which signal trimming to com pensate for temperature variations, sensitivity calibration of the gauging passage, and filtration of noises and interferences are provided. The use of software tools makes it possible to apply the broad capacities of digital processing of diagnostic signals efficiently and to improve the quality of data processing. This paper is aimed at improving the reliability of strain gauge quality control of wheels in motion by creating and optimizing methods for identifying informative diagnostic signals.A five meter railroad section that was in operation was chosen for the measurements [2]. At a height of h = 82 mm wire strain gauges with a rated resistance of R = 200 Ohm were attached on the inside and outside of the right rail web above each crosstie (pos. 1, 2, 5, and 6 in Fig. 1). Two pairs of strain gauges were mounted symmetrically between the crossties (pos. 3 and 4) and oriented along the z axis to measure the deformation components ε z . The signals from the strain gauges were recorded by a Dinamika 1 multi channel fast response strain gauging system (No. 32885 06 in the Public Register of Measuring Instruments). The sam pling rate of the AD converter (ADC) was 16 kHz and the weakest discharge equaled 0.8 mln -1 .The system's operation was synchronized with train movements by notification signals from a Kompleks 2 floor level diagnostic tool. Upon being recorded by the rapid response strain gauging sys tem, the signals from the strain gauges mounted on the section of measurements were transmitted to a computer for processing in a specialized software environment [5].The rail under the train load experienced substantial 3D deformation. The twisting torque deforming the rail according to the twisting model results from the impact of lateral force and the eccentricity of nor Abstract-An analysis of the pattern of rail deformation under a passing train using a rapid response strain gauge system is described. Digital signal processing algorithms are created, which involve filtra tion and regression a...

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The problems of automation of control processes in the nondestructive testing units are considered. The analysis of normative and technical documents is carried out and the main components of the nondestructive testing system and their parameters are determined. The developed software and relational database for monitoring and control of the unit have been integrated into trial operation in the non-destructive control units of the freight car repair company. Based on the statistical processing of control results, the possibility of assessing the efficiency of NDT inspectors and control devices was shown. The use of a network database and developed software makes it possible to improve the efficiency of control processes in the units of non-destructive testing by reducing the time spent on analysis and deciding on scheduled activities, the formation of reporting documentation. * Corresponding author: beher@stu.ru, 0 (2018) https://doi.org/10.1051/matecconf /201823901025 MATEC Web of Conferences 2018 TransSiberia 239 1025

Remote network control plasma diagnostic system for Tokamak T-10 V I Troynov, A M Zimin, V A Krupin et al. Abstract. In article the technique of calibration of system of dynamic control of a rolling stock is described. The scheme of carrying out and the device for calibration of dynamic control of a rolling stock is provided. Dependence of dynamic force on temporary parameters of blow is defined.