Purpose of the development: Фундаментальные исследования методов повышения износостойкости и энергосбережения в отрасли машиностроение. Создание системы методов испытаний на износ с получением параметров моделей износа.

Recommended application field: engineering

Technical characteristic: Wear in the friction depends on many conditions, chief among which is the surface pressure between the bodies in contact,  Preparation of the experimental dependence of the pressure wear traditional methods require laboratory testing of samples under different loads,  This paper proposes a testing samples in variable contact pressure,  Thus there is a complex process wear and explicit dependence of wear on the pressure by directly changing depreciation can not be obtained,  However, if this be described by differential equations occurring in the process and take an initial function depending on the wear of the sliding path, it is possible to reduce the problem of determining the parameters of the model wear to an inverse of the contact problem with wear,  The developed methods for determining the parameters of the contact creep and wear models allow the assessment of the state of friction with these factors during the selection of materials and the calculation of the resource.

Advantages over analogues: In this paper we propose, unlike conventional tests at constant surface pressure, testing of samples in a variable contact pressure,  Got analogіv not have svіtі abo krascha for іsnuyuchі anoalogi,  Do not Got analogіv in Ukraїnі, 

The development stage readiness: tested in laboratory condition

Description of the development:
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The problem of creating a system of effective methods of testing the wear of friction pairs is one of the basic problems of tribology determining the progress in this area. Wear test must complete a certain model parameters of wear. Only the presence of the model parameters for each pair of friction allows the quantification of wear in the friction machines, to assess their resource. In this paper we propose, unlike conventional tests at constant surface pressure, testing samples in a variable contact pressure. Under these conditions, there is a complex process of wear and explicitly the dependence of the pressure-nose directly changing depreciation can not be obtained. However, if this be described by differential equations and flowing process as the initial take a function depending on the wear of the sliding path, it is possible to reduce the problem of determining the parameters of the model wear to an inverse of the contact problem with wear. The implementation of the proposed solutions require the ideas of contact problems with wear for a couple of friction for two bodies, for the samples taken for testing. As test samples taken from the body surface of a simple regular shape: plane, sphere, cylinder, cone, wedge. Exact solution contact problems with the elasticity, plasticity and creep in contact with the present level of development of methods is possible in principle, in particular, numerical methods. However, these solutions are bulky, their use in practice tests is difficult. In this regard, in this paper we propose an approximate approach based on the basic assumption of the absolute rigidity of the bodies in contact, that is, it is assumed that the body is not deformed. This assumption gives acceptable results in the case where movement of the indicator from moving significantly exceed deformations. Calculations show that in the majority of cases the test this assumption is acceptable. As a result, it can be argued that the application was developed practically useful theory test methods for wear. During the development process we have given the methodological procedures and examples of the application of these methods. In the future, to be implemented next major step in creating an efficient methods of wear testing, including research and production work, including: 1) the development of model systems for testing and conduct complex research on them for the selection and testing of the most promising methods; 2) To establish, manufacture and standardization of installations for the production and testing of a wide Research applications; 3) improve, as the techniques and systems for testing.

corresponds technical description
Conforms to technical characteristic

Possibility of transfer abroad:
Licence's sale
Licence's sale
Combinated reduction to industrial level

Photo

Country Ukraine

For additional information turn to:
E-mail: gal@uintei.kiev.ua