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Azərbaycan Mühəndislik Akademiyasının
XƏBƏRLƏRİ

HERALD
of the Azerbaijan Engineering Academy

ВЕСТНИК
Азербайджанской Инженерной Академии

Beynəlxalq elmi-texniki jurnal
The international scientifically technical journal
Международный научно-технический журнал

Cild 7. №4 / Vol. 7. №4 / Том 7. №4

BAKI – 2015

C O N T E N T S

The Azerbaijan engineering academy – 10 years (page 7)
Pashayev A.M.

1. Energy loading of friction units of braking mechanisms at various experimental regimes (page 18)
JANAHMADOV A.KH., VOLCHENKO A.I., KRISHTOPA S.I., STADNIK O.B.
The article evaluates the aspects of the energy loading of friction units of band, disk, band-shoe braking mechanisms under the electro-thermo-mechanical loading as part of the periodic, cyclic and prolonged braking processes subjected to convective, conductive and radiation types of heat transfer.

2. Development of new scintillation detectors matrix for the radiation colorimetry devices (page 36)
ABDULLAYEV K.I.
This article details a new design and operating principle of the scintillation detector matrix with the improved energy resolution in application to dosimetric and nuclear logging tools, systems of receiving and processing information, as well as in devices of explosive and radioactive materials detection.
The improvement of energy resolution of the scintillation detector is achieved by getting the semiconductor photodetector in optical contact not only with the edge, but also with the side facet of the solid-state scintillator shaped as parallelepiped. Such construction ensures stabilization and an increase in the power of the scintillation radiation collected on the sensitive surface of the semiconductor photodetector.

3. The nonlinear elastic deformation of the rectangular mesh plates of various thicknesses at bending (page 41)
SADIGOV I.R.
The problem of the nonlinear elastic deformation of the rectangular mesh plates of various thicknesses is investigated. The composed main nonlinear differential equation is reduced to the system recurrent linear differential equations through the small parameter method. A specific example is considered to demonstrate the satisfactory convergence of the proposed calculation method.

4. Determination of rational parameters of technological operations on processing high-precision machine details of exploited at extreme conditions (page 50)
GAFAROV A.M., SULEYMANOV P.H., GAFAROV V.A., KALBIYEV F.M.
This article reviews issues related to the determination of optimal parameters of various technological operations. The outcomes of experiments with respect to the specific parameters of precision and surface quality are provided.

5. The performance test results of specimen cylinder liners in marine internal combustion engines (page 59)
MAMMADOV E.D.
The main performance test results of the specimen cylinder liners in the marine internal combustion engines (ICE) are examined. It is established that the diesel engine cylinder liners, reinforced with the synthetic coatings on the water-cooled outer surfaces, have a strong cavitation-erosion resistance. Through the experiment we also observe, the increase in the engine operational life, decrease in the fuel and oil consumptions. The technological process is recommended for implementation at shipyards of the Azerbaijan State Caspian Sea Shipping Company.

6. Mathematical models of the kinematic composites of roughness grooves cut by the vortex method on the side surfaces of revolution (page 67)
NADIROV U.M.
The external parameter of the technological process, the roughness of treated surface, is investigated to assess the qualities of grooves formed by the vortex method of side facets of rotation. The analytical dependencies are derived between the kinematic composites of roughness formed by the external and internal groove surfaces with their constructive parameters, and technological factors. The mathematical model analysis demonstrates the factors affecting the surface quality. The article also provides with the directions on the groove surface quality improvement, and the technological management.

7. Investigation of condensation in the gas transportation pipelines and the technological equipment at “Guneshli” deposit (“28 May” OGEM) (page 75)
QULIYEV A.S., QURBANOV A.N.
The article analysis the operation principles on the gas collection and preparation of gas under the high pressure at “Guneshli” deposit, and their technological schemes. As a result of the studies, it is found that condensation forms in the outer surface of the high-pressure pipelines, right after throttles mounted on the outlets of the gas condensate wells. In the section with the large pressure drop, the condensation is more intense.
As part of research the insulation coating is proposed to prevent further condensation on the external wall of pipeline. The laboratory setup and the initial experimental results are provided as guidance to independently carry out the experiment on coating in the laboratory conditions.

8. Estimation of flared gas volume using high resolution digital photos (page 85)
ALIYEV A.H., HASANOV A.M., SAMADOV E.A., MEHTIEV M.Q.
The article, based on the theoretical analyses and espermental data, offers the method to estimate the volume of flared gas by means of the high resolution digital photographing.
At the laminar velocities of the flare flow, the volumetric volume of the flare is lineraly linked to the flare fontal area, and at the greater flow velocities [(V⁄U_m )≫1] – to the flare length.
The calibration diagram and the linear coefficients provide for evaluation of the burning volume at the ecological express-monitoring.

9. The technological problems of directional drilling in inactive wells (page 94)
SHMONCHEVA E.E., ABISHEV A.G.
The article deals with problems that arise while directional drilling drilling through the deposit formation. Thus, the problems associated with the directional drilling of the small radius wells must be resolved by imposing the restrictions with the respect to its orientation in the spot of “cutting in” and on the horizontal or quasi-horizontal section of oil saturated layer. The problems with non-bringing columns to the designated depths determine the necessity to study accidents and define the accessibility of casing on the constructed and planned wells. The solution to this problem can be the descending of expansion casing into the column of small diameter with subsequent extension o desired diameter, i.e., the monobore technology. To reduce the resistance forces in the construction of directional wells it seems appropriate to use the floating BHA.

10. Sealing of oil reservoir as a result of deformation and sedimentation of various additives (page 101)
RASULOV S.R., KELBALIYEV G.İ., RZAYEV AB.H., MUSTAFAYEVA G.R., ORUCOV V.V.
The article investigates the processes of reservoir sealing as a result of deposition of various impurities and asphaltene substances in the inner surface of pores. The porosity rate equation is built on the phenomena of mass transfer in the laminar and turbulent flows. The dampening of filtration process is modeled as a change of the permeability coefficient and the layer porosity through time. The calculated debit rate satisfactorily matched the actual data, and it also demonstrated the pulsating and dampening character of the filtration velocity-to-time ratio.

11. The competitiveness of higher education institution based on the fuzzy analysis of its quality characteristics (page 113)
MARDANOV M.D., RZAEV R.R., JAMALOV Z.R., KHUDADOVA A.K.
The model uses the fuzzy inference to estimate the marketing space of educational services and the competiveness of high educational institution on the labor market. In the context of presented study, the more flexible and universal system to evaluate the competitiveness of higher education institution is provided on the basis of fuzzy logic.