One of the most important issues in ground based wood extraction in forestry is to minimize the soil damage caused by heavy forestry machines. Generally, harvesting effects include changes in vegetation nutrient availability, soil microclimate/structure and litter quantity/ quality. Several studies were carried out on the impacts of heavy machines on the soil. However, only few studies took int...

An efficient maintenance is a key consideration in systems of railway transport, especially in high-speed trains, in order to avoid accidents with catastrophic consequences. In this sense, having a method that allows for the early detection of defects in critical elements, such as the bogie mechanical components, is a crucial for increasing the availability of rolling stock and reducing mainten...

This paper presents a study to experimentally evaluate a new design paradigm for robotic components, with emphasis on space robotics applications. In this design paradigm, robotic components are made from embedded binary actuators and compliant mechanisms in order to reduce weight and complexity. This paper presents a series of five experiments that demonstrate the concept. These studies includ...

The dynamic performance of the trailer bogie brake system is essential for safe operation a high-speed train during braking process. In this work, we developed novel ten-degree-of-freedom (ten-DOF) dynamics model based on and tribological theories. non-linear factors including disc-pad friction wheel-rail interactions were considered. field test results demonstrated that more intense vibrations...

Wear and fatigue in rails are major contributors of rail degradation depending on operational conditions, track, characteristics of bogie type, Million Gross Tonnes (MGT), curvature, traffic type and environmental conditions. Estimation of parameter for failure models is necessary for accurate prediction of expected number of rail defects over a period of time based on MGT of traffic and operat...

This article presents the results of theoretical analysis stress-strain state industrial traction unit PE2U and PE2M frame. The was performed using finite element method in SolidWorks Simulation software. are necessary to estimate residual resource units at end their service life extend life. According requirements standards, rolling stock load-bearing constructions, these constructions should ...