The article presents the results of field tests under-rail pads in order to assess effect stiffness and number standard experimental pads-shock absorbers on amplitude-frequency characteristic vibrations that occur ballast layer rail joint zone when rolling stock is moving. To achieve this goal, we measured vertical vibration accelerations arising during passage trains area with a different shoc...

High engineering requirements of shock absorbers have increased interest in auxetic materials, which higher specific energy absorption performance compared to conventional solid absorbers. Last decade, many optimization studies were conducted improve the tubular structures. Most focused on adding inner and outer shells thin-walled with different types lattice structures enhance cylindrical sand...

The fault detection in the components of suspension system road vehicles is great importance. optimal performance has a big influence on safety and stability vehicle. Vehicle inspection services make use different methods diagnosis shock absorbers without need to remove them from These generally provide an average value damping coefficient or related efficiency damper. Next, acceptance rejectio...

Vibration energy harvesting technology can capture ambient forms. Using an shock absorber (EHSA) is one of the methods to achieve this function. The EHSA with mechanical motion rectifier (MMR) has bifurcation, which improve performance and reduce impact between gears. However, bifurcation makes it difficult quantitatively predict vibrational dissipation MMR−EHSA. Evaluating MMR−EHSA during desi...

Using metamaterial absorbers, we have shown that metallic layers in the absorbers do not necessarily constitute undesired resistive heating problem for photovoltaics. Tailoring the geometric skin depth of metals and employing the natural bulk absorbance characteristics of the semiconductors in those absorbers can enable the exchange of undesired resistive losses with the useful optical absorban...