- TITLE:
STAND FOR TESTING OF COUPLINGS WITH NON METALLIC ELASTIC ELEMENTS
- AUTHOR(S):
K. V. Krystev
- ABSTRACT:
A stand for testing of couplings with non metallic elastic elements, in which the elements are made from different kind of rubber (different Shor hardness) is presented in this paper. Methods of testing are given too. It gives possibilities to make static and dynamic testing of the couplings and to determine their static and dynamic characteristics.
- TITLE:
STUDY OF RELATIONSHIP „LABOUR MOTIVATION - ORGANIZATIONAL DEVELOPMENT”
- AUTHOR(S):
N. Nikolova
- ABSTRACT:
Based on a study in Bulgarian SMEs are identified factors that influence the motivation of human resources. The purpose of th e paper is to investigate the relation between the labour motivation and the organizational development. A key factor for achieving sustainable organizational development is staff motivation. Creative management approaches proposed to effectively motivate employees to improve their labor activity in achieving the desired organizational goals.The paper presents directions for improvement of labour performance and efficiency.
- TITLE:
RESIDUAL STRESSES IN SLIDE BURNISHING PROCESS OF SMALL HOLES IN 2024-T3 HIGH-STRENGTH ALUMINIUM ALLOY
- AUTHOR(S):
D. J. Petkov, J. T. Maximov
- ABSTRACT:
The treatment by mixed burnishing of small holes in 2024-T3 high-strength aluminium alloy is a problem in the engineering practice.
The mixed burnishing aims to achieve three effects: burnishing, cold working, beneficial residual compressive stresses in a c onsiderable
depth. For achieving these effects a special tool has been designed and manufactured, which fulfils slide burnishing. The introduced residual stresses around the burnished small hole can hardly be measured experimentally, having in mind the small hole and the compressive zone depth. In this case, the use of FEM with an adequate finite-element model solves the difficulties of the experimental methods. This article presents the outcomes from numerical simulation (FEM) of slide burnishing of small holes in 2024-T3 aluminium alloy by a new tool. The residual stress (hoop, radial, axial) distribution around burnished small hole has been obtained. It has been established that the new tool introduces compressive residual stresses in considerable depth.
- TITLE:
DEVELOPMENT OF THE METHOD OF THERMOTECHNICAL CALCULATION OF THE ENERGY-SAVING EFFECT IN HELIUM-DRYING EQUIPMENT
- AUTHOR(S):
Z.S. Iskandarov, K.T. Norkulova, G.M. Abdieva, B.M. Jumaev
- ABSTRACT:
In the article the developed method of heat engineering calculation of energy-saving effect of helio drying equipment is considered. The dependence of thermal efficiency on the amount of aspirated air in the air layer of the helio dryer. Key words: helium-drying equipment, chilled and drying chamber, solar air collector.
- TITLE:
EXPERIMENTAL STUDY OF DRIED TO OPTIMIZE AND OBTAIN A PRODUCT WITH NEW PROPERTIES
- AUTHOR(S):
J.E. Safarov, Sh.A. Sultanova, B.M. Jumaev, G.T. Dadaev
- ABSTRACT:
In the work analyzes the process of drying of food products in order to obtain experimental results of heat distribution studies in the dried product. Results on the optimization of energy consumption during drying by the use of a discrete (intermittent) drying. Inulin distribution curves are presented for the Jerusalem artichoke with a specific layer. An essential element of the separation of inulin in layers. Presented received the analytical results of applied research with the help of mathematical physics methods.
