An implementation of the interactive technology for conducting laboratory classes on discipline "Technology of construction materials" in the form of a business game. A scenario is developed in laboratory classes with the elements of a business game. This interactive technology is being successfully implemented at the Department of "mechanical Engineering and applied mechanics" VITI NRNU MEPhI in the representation of the discipline "Technology of construction materials" and its sections.

Keywords: business game, an interactive form, technology of structural materials, protective coating

The article substantiates the necessity to address the effects of fog and rain when designing mobile robotic platforms and to define the fog numerical indicators and conditions of its occurrence. The common braking system structure and the working principle of brake disk drying through periodic rubbing of brake pads and disks are brought. The electrical diagram of brake control system with microcontroller and the fog and rain sensors and reliability analysis of this device are given. In a proposed control device operation algorithm the conditions of fog occurrence and the sensor parameters are considered. The algorithm is required to create a software system for mobile robotic platform.

Keywords: mobile robotic platform, fog, braking system, microcontroller, sensors, control system, software system

in the article the method of finding the optimal value of the probability of failure-free operation of machine parts with constraints on resources, the characteristics of the structure and economic performance. The algorithm for calculating the total economic cost of failure removal, implemented in the software algorithm block MRM and choosing the best option of manufacturing parts. As an example, the handle of the EC-14, single-bucket excavator. The optimal uptime probability value equal to 0.999 and corresponds to the structure, which is 7% more than the original, but is reduced to 2.2 times the total cost of eliminating failures.

Keywords: reliability, probability of failure-free operation, resource, machine parts, shovel, handle, optimization, the cost of failure removal, modeling, economic calculation

The development of the approach to multi-criteria robust optimization is presented in article by developing of a technological machines robust optimization method in a joint synthesis of a parameters and tolerances on them. The ability to search for optimal solutions is the advantage of the proposed method in the absence of functional dependencies for single quality parameters from the input parameters that have extreme character and in terms of the existence of intuitive perception about their best averages. A structural (functional) synthesis, a parametric synthesis and a synthesis of tolerances theories were used to develop a method. This article may be useful for researchers studying the problems of finding optimal solutions during the implementation stages of creating and implementing life cycle of technological machines and for researchers studying the problems of improving the quality and competitiveness of technological equipment in domestic enterprises.

Keywords: tolerance; parameter; synthesis; robust optimization; processing machine; area of optimum values

In the article information is presented about plastic properties of the heated porous powder-like materials from ferrous powders at tests on a bend. Dependence of tangential eτ, radial eρ is set and transversal ez deformations from initial porosity of standards and grain-size distribution. Experimental confirmation of hypothesis of flat sections and unchanging position of neutral surface is got at the bend of the heated porous standards.

Keywords: plastic property, heating, porous powder-like material, bend, tangential deformation, radial deformation and transversal deformation

The theoretical determination of the temperature in the contact area in the rolling ball and ultrasonic hardening of titanium alloys OT-4, VT6 and VT9. It is shown that as a result of deformation, and the work of the friction forces is formed of heat. At the same time the total temperature field is influenced by the geometric parameters of the items to be treated, during previous processing, the total thermal power sources and the nature of the heat exchange with the environment. A generalized solution of the maximum contact temperature at the ball rolling and ultrasonic hardening by moving sources.

Keywords: ultrasound, hardening, roll forming a ball , the contact area, a titanium alloy .

Reflects the results of work aimed at finding new Technical solutions to reduce power consumption in crushing lumpy rocks in the jaw crusher. Main technical solutions for advancement the jaw crushers are presented in the form of Intellectual matrix of evelopment. The ways of improvement construction jaw crushers in order to increase process efficiency crushing

Keywords: rock, crushing, matrix of development, patent, jaw crusher

The article presents an approach of calculation of evaluation of manufacturer risk to take the wrong decision, based on the results of criticality assessment, received by expert methods of analysis of system reliability in its design stage. The problem of realization of the risk-oriented thought (one of the most important ISO category) is considered. The analytical dependences for calculating risk amount are developed. The dependences take into consideration various probability distributions and cases where the probability distribution is unknown. Using of proposed method allows increase the efficiency of actions aimed at improving of products quality.

Keywords: criticality assessment, reliability engineering, manufacturer risk, wrong decision,expert method

The article describes one of the methods of machining deep grooves in the turbine rotor disk mill, analyzed the parameters of the shear layer, defined modes of processing and the main process time.

Keywords: milling techniques, the parameters of the shear layer, the maximum thickness of the cut, the cutting conditions, the cutting force, the main production processing time

This article provides an overview of the technical solutions of equipment to deal with trees and shrubs, conclusions are drawn on the basis of the review and the direction of further improvement of the equipment and technologies to deal with trees and shrubs.

Keywords: trees and shrubs, mulcher, reliability, stump grinder, rotary actuator, reforestation

In article the analysis of ways of increase and criteria for evaluation of stability of the welding arc category is carried out. The most perspective way of increase of stability of the arc category, can be carried out due to pulse, high-frequency impact on a welding contour. The experimental data obtained at research of the combined power supply system of the arc category of a direct current at parallel connection to the main welding power supply of the additional generator of impulses are given. Influence of a pulse component from the additional generator with a frequency of 40 kHz, on stability of burning of the arc category is considered at manual arc welding by the covered electrodes. As criteria for evaluation of stability of burning of the arc category have been accepted such as, the explosive length of an arch with which there is it's natural break and coefficient of stability. The conducted pilot studies and positive results of skilled approbation of the developed power supply system of the arc category allow to recommend it for application at installation of responsible metal designs.

Keywords: Stability, the welding arc category, welding by the covered electrodes, pulse impact on a welding contour, explosive length of an arch, stability coefficient, the electromagnetic field, the generator of impulses

A promising direction of creation of new lubricants is their modification by nanoclusters of metals, which form in the zone of friction of the protective film, providing reduction of wear of friction pairs. In this regard, the aim of this work is to study tribological properties of lubricating compositions containing nanosized particles of lead and palladium. A lubricating composition was obtained in aqueous solution during electrolysis with a lead anode or in the presence of salts of palladium in an ultrasonic field (complex processing). Tribological studies showed that the lubricating compositions have high anti-wear and extreme pressure properties.

Keywords: nanoscale particles, friction, wear, anti-wear and antiwelding properties

Currently widely advertised and offered on the domestic and global markets: anti-wear additives to motor, gear, industrial oils. Developed a method of producing nanoclusters of copper, lead and palladium in water-alcohol environments and the possibility of realization of the effect of wearless friction when using such a lubricating composition to the rubbing steel surfaces. The studied tribological properties of metal nanoclusters in aqueous solutions of multinuclear alcohols with the use of mechanical friction machine AE-5.

Keywords: nanoscale particles, friction, wear, wearless friction

In the article the method of improvement of the design of the disc cutter for machining a wide, deep grooves.

Keywords: Scheme of cutting of the shear layer, the maximum thickness of the shear layer, free-cutting, cutting width, cutting force, straight grooves, circular grooves, the theorem of cosines.

This article provides an overview of the technical solutions of equipment to deal with trees and shrubs, conclusions are drawn on the basis of the review and the direction of further improvement of the equipment and technologies to deal with trees and shrubs.

Keywords: trees and shrubs, mulcher, stump grinder, rotary operating element, lighting, reforestation

A new device is offered for the analysis of motor oil contamination of the internal combustion engine with dispersed particles. To enhance the information content of the output data and the possibility of the continuous automated monitoring, as well as improve the accuracy, efficiency and reliability of the measurement device uses opto-electronic method of analysis of pollution of motor oils based on a method of ""spot test"".

Keywords: lubricant, optico-electronic device, the internal combustion engine, motor oil, methods for analyzing contamination, optical inspection method

Abstract: We consider the importance of taxation instruments on sustainable forest management. The goal is the creation of geographic information systems to efficiently develop leased forest areas in the short and long term to meet the requirements of the forest legislation of the Russian Federation and the minimization of the cost of a unit of harvested timber, in order to increase profits logging companies.

Keywords: "Keywords: forest taxation, age borer, forest management, forest raw material preparation, geographic information systems , cost reduction"

Developed a method of producing nanoclusters of copper and lead in water -organic solution with a soluble anode with simultaneous dispersion in the friction layer of metal recovered at the cathode. The topographic studies of the nanocluster metal structures are performed with the scanning probe microscope (SPM) Solver P47H. Tribological properties of steel-steel friction pair are studied on the front friction machine AE-5. In the result, the following is established. It is shown that in the process triboelectrochemical process the nanoclusters are formed of copper and lead with a height of about 100 nm. The possibility of realization of the effect of wearless friction when using a lubricating composition containing nanoscale particles of copper and lead to rubbing steel surfaces. On the friction surfaces is formed servovite film, which improves frictional characteristics of the contact and reduces wear of the contacting surfaces.

Keywords: Nanosized clusters of copper, wearless friction, the coefficient of the rate of friction, wear, atomic force microscopy

This article is devoted to the problem of increasing efficiency of internal combustion engines, and decreasing the levels of potentially harmful chemicals and particulates in the engine exhaust. Internal combustion engines are widely used in automotive transport. Currently there are more than a billion of internal combustion engines in use. They consume substantial amounts of fuel and adversely affect the environment. This paper focuses on a novel approach to increasing the efficiency of internal combustion engines through the use of a turbine-based mechanism. This setup enables the engine to avoid friction losses caused by the currently used crank-and-connecting-rod setup. The turbine-based mechanism will be less prone to detonation of the fuel mixture, and will increase the compression ratio. It will also allow to add 3-8% of hydrogen to the fuel mixture, thus increasing the operating temperature and decreasing the concentration of potentially harmful chemicals and particulates in the engine exhaust. Besides increased efficiency, the proposed engine design will enable liquid-based cooling of the turbine blades. Traditional materials can be employed in its construction.

Keywords: automobile transport, internal combustion engine, increasung efficiency, decreasing the levels of potentially harmful chemicals

In the article the results of researches of plastic properties of porous powder-like materials are presented in the heated state at tests on monaxonic tension. The feature of deformation of porous standards, that consists in their practically even narrowing on all working length with a subsequent break without visible formation of neck, is marked. Dependence of deformations of lengthening and narrowing of standards is set on their initial porosity and brand of metallic powder

Keywords: monaxonic tension, plastic property, porous powder-like material, warming, protective environment, deformation, lengthening and narrowing of standard

It is marked in the article, that at making of details of difficult form powder-like material must thermoforming of powder-like purveyances have high plasticity that would allow for certain technological terms and chart tensely - the deformed state to provide their shaping of zero-defects. Presented taking about the method of test of the heated porous powder-like standards from ferrous powder on a bend. The constructions of press-form are described for cold-press of powder-like standards and adaptation for their dynamic bend in the heated state.

Keywords: test, thermoforming, press-form, heating, porous powder-like standard, adaptation for the bend of standards

In article the factors defining efficiency of roadheader technology application of transport tunnels construction are considered. As one of the factors containing growth of carrying out speed of tunnels is the loading part of the combine, in article the analysis of the factors influencing efficiency is made. Stochastic process of interaction with the destroyed mountain weight is considered. The analysis of the developed approaches to determination of executive body loadings productivity with loading paws with a destroyed mountain weightstack is made. Influence of a form of the immersed material particles and geometrical ratios of loading body and average fineness of material particles is analysed. It is revealed that extent of influence of a particles form doesn't exceed the statistical errors arising at research of loading process of lump mountain weight, and geometrical ratios have significant effect on loadings and productivity. When determining loadings it is offered to apply model taking into account linear proportions coefficient, and it is necessary to apply the model considering influence of active volume on formation of system output characteristics to calculation of loading part productivity. Taking into account influence of the described factors, the calculated value of productivity and loadings increases in comparison with the generalized models that confirms expediency of use of the described dependences.

Keywords: Driving of tunnels, factors of productivity formation, driving combines of selective action, form coefficient, coefficient of linear proportions, active volume

Complex use of CAD and CAE-technologies for enhancement of a podklinovy outer spring of spring suspension of the three-element cart of the freight car of model 18-100 is offered. As the initial prototype the outer spring, development of JSC NPK Uralvagonzavod was selected. Solid modeling and an assessment of the intense deformed status was executed in the instrumental environment Autodesk Inventor Professional 2015. It allowed to receive more rugged construction of a spring in comparison with a basic spring on condition of saving overall dimensions.

Keywords: the cart of the freight car, podklinovy spring, knot of blanking out of fluctuations, 3d – modeling, strength, durability, working capacity, a frictional chock

The analytical assessment of change of office properties of heavy-duty details of friction pairs of the cart of the freight car on the first depot repair is presented. The technique of definition of iznos of details of the cart is applied to determination of faults. The most subject are shown to defects nodes of the cart of the freight car.

Keywords: cart of the freight car, frictional wedge, cap of a skolzun, thrust bearing disk, frictional level, wear, wear resistance, defects of the cart of the car

The article presents the results of analyzing patents, aimed at improving the design of jaw crushers and crushing processes using them,conducted in order to establish the technical level of their development.

Keywords: rock, objective tree, crushing, patent, jaw crusher