Theoretical basis for calculating reliability indicators of agricultural machines

  • 1 Academy of Agricultural Sciences of Georgia. Tbilisi, Georgia
  • 2 Scientific-Research Center of Agriculture of Georgia. Tbilisi, Georgia


Calculating and increasing the reliability indicators of machines is an important problem as they won’t be competitive in the world market without this high indicator. Currently, many scientists have developed scientific foundations for calculating the reliability of machines, installations, instruments and devices in radio electronics, aviation, space, mechanical engineering and other industries, but such research is not acceptable for agricultural machines that operate in special soil-climatic and dynamic conditions. Their working bodies are constantly subject to alternating dynamic loads, abrasive particles in the cultivated soil, exposure and inclination of the relief, high humidity, high radiation, etc. All these factors cause intensive wear of their working bodies and therefore, such machines are subject to special requirements for reliability. In addition, agricultural machines must have high reliability due to the fact that harvesting is carried out in a short time and failures of such machines lead to significant losses of agricultural products. We have developed theoretical principles and methods for calculating the reliability of agricultural machines, taking into account the specifics of their designs and operating conditions. For this purpose, modern methods of probabilistic-statistical modeling, queuing theory, similarity and dimensions were used. A methodology for calculating reliability was also developed taking into account the structural and logical diagrams of machines and such diagrams of specific machines were drawn up.



  1. J. V. Katsitadze – Some questions of calculation of agricultural cars on reliability. Works of GAU, volume. 70, Tbilisi, 2001, Pages 27... 30.
  2. J. Katsitadze-Theoretical basics calculation of reliability of agricultural techniques, XX International scientific-technical conference “TransMOTAUTO-12”, Varna, 2012, Pages 7-11.
  3. J. Katsitadze, N. Sarjveladze, - Technical service of cars, Tbilisi, 2008, Pages.186.
  4. J. Katsitadze. New materials and technologies for increasing the reliability of cars. Works of scientific and technical conference, Kutaisi, 2013, Pages 20-24.
  5. J. Katsitadze-Development of resource-saving technology of restoration of details of cars, Works of the International scientific and technical conference "Cars for Agriculture", Varna, 2013, Pages 67-70
  6. J. Katsitadze, I. Kapanadze - the Plow with a variable width of capture, the patent of Georgia, P5129,2010
  7. A. Dudnikov, I. Dudnikov, V. Dudnik, O. Gordenko, A. Relemesh, Research of the main parameters of the technological process process of electric contact welding at the restoration of machine parts, 6/1(38), Mech. Eng. Technol. (2017) 1–9 (inUkraine).
  8. I. Opacak, I. Putnik, M. Samardžić, Influence of the soil particles on the wear of plowshares during, Int. J. Sci, Tech. Innovat. Ind. 3 (2017) 157– 160.
  9. S.I.Chalaganidzea J.B.Katsitadzeb G.G.Kuteliab. The theoretical and experimental study of the ploughs' ploughshares in order to increase the reliability of resource-saving technology using similarity and dimensions theory. Annals of Agrarian Science. Volume 15, Issue 3, September 2017, Pages 329-331.
  10. J. Katsitadze, G. Kutelia, I. Abuladze, Wear resistance of the flowshares of the agricultural plows working under mountainous conditions and the increase of them resource, IV Scientific Congress Agricultural Machinery, 22-25.06.2016, Varna, Bulgaria, 2016, Pages. 12–14.

Article full text

Download PDF