The wide range of possible applications for the portable X-ray apparatus with an air cooled double-anode X-ray tube are presented. The apparatus is provided with a stress measurement unit and focusing camera for phase analysis. The distinctive characteristics of the apparatus are a small weight (a 4 kg), fine focus ray tube, portability and ease of use for both laboratory samples and industrial...

Evaluation and non-destructive identification of stress-induced cracks or failures in metals is a vital problem in many sensitive environments, including transportation (steel railway tracks, bridges, car wheels, etc.), power plants (steam generator tubing, etc.) and aerospace transportation (landing gear, aircraft fuselages, etc.). There are many traditional non-destructive detection and evalu...

Wheel defects on trains, such as flat wheels and out-of-roundness, inevitably jeopardize the safety of railway operations. Regular visual inspection and checking by experienced workers are the commonly adopted practice to identify wheel defects. However, the defects may not be spotted in time. Therefore, an automatic, remote-sensing, reliable, and accurate monitoring system for wheel condition ...

We present efficient algorithms to generate all edge-magic and vertex-magic total labelings on cycles, and all vertex-magic total labelings on wheels. Using these algorithms, we extend the enumeration of the total labelings on these classes of graphs.

Investigation of vertical vibrations of a railway turnout is important in designing track components under moving loads of trains. In this paper, the turnout is simulated by a linear finite element model with modal damping. A section of the turnout has a length of 36 sleeper spans surrounding the crossing. Rails and sleepers are modeled with uniform Rayleigh- Timoshenko beam elements. The rail...

The object of the research is KP-2 wheel steel modified by Al-Mg-Si-Fe-C-Ca-Ti-Ce system. One most problematic places in smelting modern stability chemical composition due to use uncontrolled content scrap, charge and standard modifiers, which are made fused method. To eliminate this problem, multifunctional modifiers were used during study. This fact that modification method proposed article, ...

The shattered rim on railway wheels is increasingly concerned in recent years. Based the failure analysis, mechanism of was revealed. contact stress distribution wheel/rail with inclusions wheel analyzed by ABAQUS. Then field imported into FRANC3D to simulate crack propagation. It found that simulation results were good agreement those obtained experimentally from actual rim, which proves avail...