scholarly journals Theoretical-experimental study of dependence of natural frequencies of oscillations plates from application thickness

2021 ◽  
Vol 29 (2) ◽  
pp. 88-99
Author(s):  
Ekaterina E. Yaroslavkina ◽  
Anton V. Suslov
Keyword(s):  
Experimental Study ◽  
Computer Simulation ◽  
Oscillation Frequency ◽  
Natural Frequencies ◽  
Control Object ◽  
Metal Plate ◽  
Oil Products ◽  
Correlation Dependence ◽  
Prospective Investigation ◽  
Oil And Oil Products

The paper considers the problem of asphalt-resin-paraffin deposits in the production of oil and oil products. Methods of sediment measurement have been studied. Computer simulation of dependence of natural frequencies of metal plate oscillations on thickness of deposits was carried out. Correlation dependence of oscillation frequency of the control object on thickness of deposits is confirmed. The obtained results allow prospective investigation of pipe-wires deposits thickness.

Methods of early detection and monitoring of oil and oil products spills on water bodies and evaluation of their efficiency

2017 ◽  
Vol 7 (5) ◽  
pp. 56-67 ◽  
Author(s):  
Svetlana G. Radionova ◽  
◽  
Sergey A. Polovkov ◽  
Alexander E. Gonchar ◽  
Vladislav N. Slepnev ◽  
...  
Keyword(s):  
Early Detection ◽  
Oil Products ◽  
Water Bodies ◽  
Oil And Oil Products

Current state of vapor recovery when handling oil and oil products

2017 ◽  
Vol 7 (5) ◽  
pp. 111-119
Author(s):  
Rustam Z. Sunagatullin ◽  
◽  
Aleksey A. Korshak ◽  
Grigory V. Zyabkin ◽  
◽  
...  
Keyword(s):  
Oil Products ◽  
Current State ◽  
Oil And Oil Products

FACTORS INFLUENCING THE DYNAMICS OF CHANGES IN OIL PRICES

2020 ◽  
Vol 1 (11) ◽  
pp. 103-108
Author(s):  
T. I. SAILAONOV ◽  
Keyword(s):  
Supply And Demand ◽  
Oil Prices ◽  
The State ◽  
Price Regulation ◽  
Oil Products ◽  
Foreign Markets ◽  
Oil Market ◽  
Factors Influencing ◽  
Factors Of Influence ◽  
Oil And Oil Products

The article analyzes the state of pricing in the oil market, examines topical issues of assessing the emerging factors of influence both on the domestic and foreign markets. Particular attention is paid to the issues of the emerging situation of supply and demand for oil and oil products, regulation of its production, storage, transportation, processing, formation of sales volumes and income from sales. Highlighted and disclosed the problem of price regulation in the aspects of finding and achieving flexible forms of negotiating prices for oil supply and oil sales, taking into account various options for the volume of oil production.

scholarly journals Linkages between Energy Delivery and Economic Growth from the Point of View of Sustainable Development and Seaports

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4255
Author(s):  
Elżbieta Szaruga ◽  
Zuzanna Kłos-Adamkiewicz ◽  
Agnieszka Gozdek ◽  
Elżbieta Załoga
Keyword(s):  
Sustainable Development ◽  
Crude Oil ◽  
Cross Correlation ◽  
Point Of View ◽  
Oil Products ◽  
Modern Approach ◽  
Economic Cycles ◽  
Study Results ◽  
The One ◽  
Oil And Oil Products

This paper presents the synchronisation of economic cycles of GDP and crude oil and oil products cargo volumes in major Polish seaports. On the one hand, this issue fits into the concept of sustainable development including decoupling; on the other hand, the synchronisation may be an early warning tool. Crude oil and oil products cargo volumes are a specific barometer that predicts the next economic cycle, especially as they are primary sources of energy production. The research study applies a number of TRAMO/SEATS methods, the Hodrick–Prescott filter, spectral analysis, correlation and cross-correlation function. Noteworthy is the modern approach of using synchronisation of economic cycles as a tool, which was described in the paper. According to the study results, the cyclical components of the cargo traffic and GDP were affected by the leakage of other short-term cycles. However, based on the cross-correlation, it was proved that changes in crude oil and oil products cargo volumes preceded changes in GDP by 1–3 quarters, which may be valuable information for decision-makers and economic development planners.

NUMERICAL AND EXPERIMENTAL STUDY ON FREE VIBRATION OF DELAMINATED WOVEN FIBER GLASS/EPOXY COMPOSITE PLATES

2012 ◽  
Vol 12 (02) ◽  
pp. 377-394 ◽  
Author(s):  
J. MOHANTY ◽  
S. K. SAHU ◽  
P. K. PARHI
Keyword(s):  
Experimental Study ◽  
Aspect Ratio ◽  
Free Vibration ◽  
Boundary Conditions ◽  
Natural Frequencies ◽  
Numerical Study ◽  
Shear Deformation Theory ◽  
Composite Plates ◽  
Fiber Glass ◽  
Number Of Layers

This paper presents a combined experimental and numerical study of free vibration of industry-driven woven fiber glass/epoxy (G/E) composite plates with delamination. Using the first-order shear deformation theory, an eight-noded two-dimensional quadratic isoparametric element was developed, which has five degrees of freedom per node. In the experimental study, the influence of various parameters such as the delamination size, boundary conditions, fiber orientations, number of layers, and aspect ratio on the natural frequencies of delaminated composite plates are investigated. Comparison of the numerical results with experimental ones shows good agreement. Fundamental natural frequencies are found to decrease with the increase in the delamination size and fiber orientation and increases with the increase in the number of layers and aspect ratio of delaminated composite plates. The natural frequency of the delaminated composite plate varies significantly for different boundary conditions.

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