Quantitative assessment of wheat mechanical injury during free fall in transport and processing lines

Authors

DOI:

https://doi.org/10.15587/2706-5448.2026.357903

Keywords:

mechanical injury to grain, influence of free fall, speed of wheat flight, experiment, angle of impact

Abstract

The object of research is the process of gravitational fall of grain during its movement along a typical transport and technological line at the enterprise. The problem of the lack of a comprehensive analysis of operational deficiencies of transport equipment, which leads to mechanical damage to grain, was solved. The results of a comprehensive research of the impact of free fall of grain from different heights on surfaces with different physical and mechanical properties are presented. The relevance of the work is due to the need to minimize post-harvest losses of grain, which due to equipment imperfections can reach 55–65% of the total volume.

The nonlinear nature of the change in the speed of grain fall under gravity was experimentally established: on a section of up to 10 m, the speed increases to 12.4 m/s, after which it stabilizes within 13.3 m/s under the influence of air resistance. It is proven that the type of material of the surface in contact with the grain is a determining factor in the intensity of damage. The highest injury rates (up to 0.6%) were recorded in contact with Hardox 450 steel, while the use of polyurethane lining reduces the level of damage by 12%. The most trauma-saving method was recognized as the “grain on grain” method, which provides a reduction in injury by 54–57%. A direct correlation was established between the angle of inclination of the surface and the degree of destruction of the kernel: a direct impact (90°) is critical, which increases the level of macrotrauma by 2–2.4 times. Using the method of staining with aniline dyes, a hierarchy of vulnerability of the grain structure was identified, where endosperm microtrauma occurs in any fall regime. This difference in injury can be explained by the ability of materials to absorb kinetic impact energy. The appearance of endosperm microtrauma in any regime indicates the fragile nature of the starch structure of the kernel.

Scientifically based recommendations are provided on limiting the height of free fall to 4 meters and introducing grain gravity-braking devices to preserve grain quality.

Author Biography

Ruslan Mirskykh, Odesa National University of Technology

PhD Student

Department of Processes, Equipment and Energy Management

References

  1. Derevianko, D., Sukmaniuk, E., Chychylyuk, S., Derevianko, O., Polischuk, V. (2020). The impact of transporting technical means on grain crops damaging and quality. Scientific Horizons, 89 (4), 47–54. https://doi.org/10.33249/2663-2144-2020-89-4-47-54
  2. Looh, G. A., Xie, F., Wang, X., Looh, A. N., Hind, H. (2025). Grain kernel damage during threshing: a comprehensive review of theories and models. Journal of Agricultural Engineering, 56 (1). https://doi.org/10.4081/jae.2025.1674
  3. GuiXiang, C., YaHao, Y., ChaoSai, L., WenLei, L., JingRan, L. (2023). Factors, Harms, and Control of Corn Kernel Breakage: A Review. Annals of Food Processing and Preservation, 7 (1), 1–13. https://doi.org/10.47739/2573-1033.foodprocessing.1038
  4. Shahbazi, R., Shahbazi, F., Nadimi, M., Paliwal, J. (2023). Assessing the Effects of Free Fall Conditions on Damage to Corn Seeds: A Comprehensive Examination of Contributing Factors. AgriEngineering, 5 (2), 1104–1117. https://doi.org/10.3390/agriengineering5020070
  5. Arendarenko, V. M., Samoilenko, T. V., Antonets, A. V., Ivanov, O. M., Yaprynets, T. S., Flegantov, L. O. (2022). Substantiation of the frequency of grains collisions in a flow moving in a gravitational installation. Scientific Progress & Innovations, 1, 201–206. https://doi.org/10.31210/visnyk2022.01.26
  6. Samoilenko, T. V., Arendarenko, V. M., Antonets, A. V., Koshova, O. P. (2021). On impact interaction of falling wheat grain on rigid concrete silo base. Scientific Progress & Innovations, 2, 259–265. https://doi.org/10.31210/visnyk2021.02.34
  7. Samoylenko, T., Antonets, A., Arendarenko, V., Mel'nik, V. (2021). Modeling the impact interaction of a grain with a flat solid surface. Engineering of nature management, 1 (19), 63–68. Available at: https://repo.btu.kharkiv.ua/server/api/core/bitstreams/177573ff-c096-495b-9629-5efbdddd4492/content
  8. Antonets, А., Ivanov, О., Kucherenko, S., Yaroshenko, B. (2025). The research of controlled grain movement on three adjustable shelves of a cascade installation. Visnyk of Kherson National Technical University, 1 (2 (93)), 18–24. https://doi.org/10.35546/kntu2078-4481.2025.2.1.2
  9. Arendarenko, V. M., Samoilenko, T. V., Ivanov, О. М. (2021). Investigation of grain material movement on gravitation installation trays. Scientific Progress & Innovations, 1, 302–309. https://doi.org/10.31210/visnyk2021.01.38
  10. Antonets, A., Arendarenko, V., Ivanov, O., Dudnikov, I., Liashenko, S. (2025). Development of an analytical model of the controlled movement of grain material on the bulk shelves of a loading-gravity-cascade unit. Technology Audit and Production Reserves, 3 (1 (83)), 13–19. https://doi.org/10.15587/2706-5448.2025.330574
  11. Arendarenko, V., Samoilenko, Т., Ivanov, О., Ryzhkova, Т. (2023). Results of experimental research on the distribution of a falling grain from a toro-shaped plate on a flat surface. Scientific Progress & Innovations, 26 (1), 96–101. https://doi.org/10.31210/spi2023.26.01.15
  12. Obineche, C., Unanka, B. O., Nkechi Udochukwu, E., Akuwudike, A. E., Chinwendu Augustina, O. (2023). Design and Performance Evaluation of a Variable Speed Bucket Elevator. Turkish Journal of Agricultural Engineering Research, 4 (2), 225–238. https://doi.org/10.46592/turkager.1378650
  13. Kurhan, V., Sydorenko, I., Kurgan, V., Dudko, R., Bershak, S. (2024). Optimal Layout of the Head Drive for a Self-Supporting Bucket Elevator of High Productivity. Journal of Engineering Sciences, 11 (2), A22–A29. https://doi.org/10.21272/jes.2024.11(2).a3
  14. Tushar, S. R., Alam, F. B., Zaman, S., Garza-Reyes, J. A., Bari, A. B. M. M., Karmaker, C. L. (2023). Analysis of the factors influencing the stability of stored grains: Implications for agricultural sustainability and food security. Sustainable Operations and Computers, 4, 40–52. https://doi.org/10.1016/j.susoc.2023.04.003
  15. Kis-Korkishchenko, L. V. (2021). Obgruntuvannia konstruktyvno– kinematychnykh parametriv zavantazhennia kovshiv zernovykh nori. [PhD dissertation; Derzhavnyi biotekhnolohichnyi universytet]. Available at: https://biotechuniv.edu.ua/wp-content/uploads/2021/12/dysertatsiya-Kis-Korkishhenko-L.V..pdf Last accessed: 25.03.2026
  16. Boslovyak, P. V., Shagimardanov, V. R. (2021). Calculation and comparative analysis of bucket of the belt elevator. IOP Conference Series: Materials Science and Engineering, 1129 (1), 012069. https://doi.org/10.1088/1757-899x/1129/1/012069
  17. Nukulwar, M. R. (2016). Material optimization and Modal Analysis of Elevator bucket. International Journal of Current Engineering and Technology, 6, 574–580. Available at: https://www.researchgate.net/publication/343963324_Material_optimization_and_Modal_Analysis_of_Elevator_bucket
  18. Stepanenko, S. P., Aneliak, M. M., Kuzmich, A. Ya., Shvidya, V. O., Volyk, D. A., Konoval, O. O., Popadyuk, I. S. (2023). Study of the influence parameters and operating modes of equipment on the degree of grain damage in processing lines for its cleaning. Mechanics and automatics of agroindustrial production, 2 (116), 88–99. https://doi.org/10.37204/2786-7765-2023-2-10
  19. Stepanenko, S., Myronenko, V., Pogorilyy, S. (2024). Study of grain damage factors in the processes of separation. Scientific Bulletin of Tavria State Agrotechnological University, 14 (1). https://doi.org/10.32782/2220-8674-2024-24-1-1
  20. Nesterenko, О., Vasylkovskyi, O., Petrenko, D., Artemenko, D. (2020). Study of Performance Characteristics of the Gravitational Guide Curve of Feeder Unit. National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, 50, 20–27. https://doi.org/10.32515/2414-3820.2020.50.20-27
  21. Vasylkovskyi, O., Leshchenko, S., Moroz, S., Nesterenko, O., Molokost, L. (2020). Before Creating the Concept of the “Ideal” Grain Separator Sieve. National Interagency Scientific and Technical Collection of Works. Design, Production and Exploitation of Agricultural Machines, 50, 52–58. https://doi.org/10.32515/2414-3820.2020.50.52-58
  22. Kotov, B., Stepanenko, S. (2019). Analysis of the influence of non-uniformity of air flow velocity on the trajectory of grain particles motion in a pneumatic inertial separator. Mehanization and Electrification of Agricultural, 10 (109), 66–77. https://doi.org/10.37204/0131-2189-2019-10-6
  23. Hevko, R., Hevko, I., Liashuk, O., Diachun, A., Zalutskyi, S., Stanko, A., Dovbush, T. (2024). Hvyntovi konveiery z elastychnymy poverkhniamy. Ternopil: FOP Palianytsia V. A. Available at: https://elartu.tntu.edu.ua/bitstream/lib/44487/2/%D0%9C%D0%BE%D0%BD%D0%BE%D0%B3%D1%80%20%D0%93%D0%9A%D0%95%202024.pdf
  24. Boumans, G. (Ed.) (1985). Grain handling and storage. Elsevier. https://doi.org/10.1016/c2009-0-01157-x
  25. Kyrpa, M. Ya., Bazilieva, Yu. S. (2014). Porivnialna kharakterystyka metodiv otsinky yakosti nasinnia kukurudzy. Biuleten Instytutu silskoho hospodarstva stepovoi zony NAAN Ukrainy, 6, 52–56. Available at: https://journal-grain-crops.com/uk/arhiv/view/594b78852439a.pdf
  26. Zhang, W., Ma, H., Li, X., Liu, X., Jiao, J., Zhang, P. et al. (2021). Imperfect Wheat Grain Recognition Combined with an Attention Mechanism and Residual Network. Applied Sciences, 11 (11), 5139. https://doi.org/10.3390/app11115139
  27. Dong, P., Xie, R., Wang, K., Ming, B., Hou, P., Hou, J. et al. (2020). Kernel crack characteristics for X-ray computed microtomography (μCT) and their relationship with the breakage rate of maize varieties. Journal of Integrative Agriculture, 19 (11), 2680–2689. https://doi.org/10.1016/s2095-3119(20)63230-0
  28. Zhang, T., Li, J., Tong, J., Song, Y., Wang, L., Wu, R. et al. (2025). End-to-end deep fusion of hyperspectral imaging and computer vision techniques for rapid detection of wheat seed quality. Artificial Intelligence in Agriculture, 15 (3), 537–549. https://doi.org/10.1016/j.aiia.2025.02.003
  29. Nurmagambetov, A., Kurmanov, A., Ryspayev, K., Bekmyrza, Z., Keklis, A. (2024). Analysis of Grain Damage by the Bucket Elevator during Loading/Unloading. Communications – Scientific Letters of the University of Zilina, 26 (1), B54–B62. https://doi.org/10.26552/com.c.2024.013
Quantitative assessment of wheat mechanical injury during free fall in transport and processing lines

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Published

2026-04-30

How to Cite

Mirskykh, R. (2026). Quantitative assessment of wheat mechanical injury during free fall in transport and processing lines. Technology Audit and Production Reserves, 2(1(88), 17–24. https://doi.org/10.15587/2706-5448.2026.357903

Issue

Vol. 2 No. 1(88) (2026): Industrial and technology systems

Section

Mechanical Engineering Technology

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Copyright (c) 2026 Ruslan Mirskykh

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