Fatigue life testing of the round link mining chains

• Autorzy: Kandzia Ryszard , Szot Mariusz

Identyfikatory

DOI

10.2478/mspe-2023-0010

• Języki publikacji: EN

Abstrakty

EN

The material fatigue phenomenon consists of progressive material damage through the appearance and development of fractures under the influence of variable, periodically recurring stresses. Engineers designing machinery and structures to be fatigue resistant can gain useful insights about design and material properties by reviewing the literature. In this way, we can avoid costly research, but in the case of complex loading phenomena and the interaction of components, we must carry out such research. Fatigue strength calculations are less accurate than simple static calculations. The wear of link chains is concentrated in three areas, depending on the installation location and function of the individual links, namely: in the joints (the points of contact between two links), on the outer surfaces of the arches and on the outer surfaces of the straight sections of the links. During operation, chains are particularly vulnerable to wear through abrasion, corrosion and fatigue. These ageing factors, which act with varying intensity depending on the properties of the deposit, determine the service life of the chain, unless other unforeseen damage occurs, e.g. "hard" blockage of the chain. In many cases, users are guided by their own subjective criteria for assessing the technical condition of chains, which does not always lead to fully rational decisions regarding the continued use of used chains. To date, there have been no attempts to transfer the results of chain fatigue tests to behaviour of real objects. This paper presents issues related to mining chain fatigue testing. The test results presented are for both new and used chains. The experimental tests conducted at GIG made it possible to solve the problem of applying fatigue test results in industrial practice.

Słowa kluczowe

EN

chain; fatigue; safety

• Wydawca: STE GROUP
• Czasopismo: Management Systems in Production Engineering
• Rocznik: 2023
• Tom: nr 1 (31)
• Strony: 78--85
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Kandzia Ryszard

• Thiele GmbH Werkstraße 3, 58640 Iserlohn, Germany

autor

Szot Mariusz

• GIG Research Institute Plac Gwarków 1, 40-166 Katowice, Poland

• https://orcid.org/0000-0003-2238-0334

Bibliografia

• [1] R.A. Smith, K.J. Miller. “Fatigue cracks at notches.”, International Journal of Mechanical Sciences, Volume 19, Issue 1, 1977.
• [2] G. Philipp, M. Schutz, K. Nienhaus. „Określenie sił występujących w łańcuchu przenośnika ścianowego przy pomocy zminiaturyzowanego układu pomiarowego.” Wiadomości Górnicze n. 68, 2017.
• [3] E. Remiorz, S. Mikuła. "Podstawowe formy degradacji własności użytkowych łańcuchów ogniwowych górniczych stosowanych w maszynach ścianowych." Maszyny Górnicze 35.3, pp. 14-26, 2017.
• [4] E. Remiorz, S. Mikuła. Operational diagnostics of round link chains used in advancing systems of longwall machines.” Mining Machines pp. 3-13, 2018.
• [5] E. Remiorz, S. Mikuła. "The synergy of fatigue, corrosion and abrasive wear processes in operation of mining round link chains." Archives of Mining Sciences 66.1 2021.
• [6] Q. Zhang, H. Wang, T. Guo. “Fatigue damage of v-lock chain ring under random load.” Polish maritime research, No S1/2016.
• [7] Q. Zhang, J.M. Liu, Y.F. Liu. and L.Y. Li “Study on highstrength ring chain dynamic characteristics under different launch parameters.” Strength of Materials 50.2 pp. 331- 339 2018.
• [8] SB. Jiang, X Zhang, K.D. Gao, J Gao, Q.Y. Wang. "Multi-body dynamics and vibration analysis of chain assembly in armoured face conveyor." International Journal of Simulation Modelling 16.3 pp. 458-470 2017.
• [9] S.B. Jiang, S. Huang, Q.L. Zeng, C.L. Wang, K.D. Gao, Y.K. Zhang. "Dynamic properties of chain drive system considering multiple impact factors." Int. J. Simul. Model 21, pp. 284-295 2022.
• [10] M. Dolipski, P. Cheluszka, P. Sobota, S. Tytko. “Measuring dynamic load of a chain conveyor in exploitation conditions”. Mechanizacja i Automatyzacja Górnictwa R 50.2 2012.
• [11] T. Nicolay, M. Schmitt, A. Blum. "Telemetric chain link force measurement in coal mining armoured face conveyors" SENSORS, 2004 IEEE.
• [12] M. Wójcicki, A.N. Wieczorek, G. Głuszek. Concept of the facility for testing the wear of chain links in the aspect of synergizm of environmental factors. Min. Mach. 2021, nr 4, pp. 71-81, DOI: 10.32056/KOMAG2021.4.7
• [13] Standard ISO 610.
• [14] Standard DIN 22252.
• [15] Standard PN-G-46701.
• [16] Standard DIN 17115.
• [17] M.D. Sangid. "The physics of fatigue crack initiation." International journal of fatigue 57 pp. 58-72, 2013.
• [18] M.H. El Haddad, K.N. Smith, T.H. Topper. "Fatigue crack propagation of short cracks." Journal of Engineering Materials and Technology pp. 42-46, 1979.
• [19] B. Tomkins. "Fatigue crack propagation – an analysis." Philosophical magazine 18.155 pp. 1041-1066 1968.
• [20] A.K Head. "XCVIII. “The growth of fatigue cracks.” The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 44.356 pp. 925-938 1953.
• [21] M. Szot, Ł. Herezy, P. Szade, W. Frąc. “Measurement of Forces in a Mining Plough Chain during Operation” Energies 15.16, 2022.
• [22] A. Buch. Zagadnienia wytrzymałości zmęczeniowej. Państwowe Wydaw. Naukowe, 1964.
• [23] J.A. Ewing, J.C.W. Humfrey. “The fracture of metals under repeated alternations of stress” Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character pp. 241- 250, 1903.
• [24] R.E. Peterson. “Discussion of a century ago concerning the nature of fatigue, and review of some of the subsequent researches concerning the mechanism of fatigue” Bulletin, 164, American Society for Testing and Materials 1950.
• [25] G. Noll, C. Lipson. “Allowable working stresses” Society for Experimental Stress Analysis 1946
• [26] W. Yao, X. Kaiquan, G. Yi. "On the fatigue notch factor, Kf." International Journal of Fatigue 17.4, pp. 245-251, 1995.
• [27] R.B. Heywood. “Stress concentration factors relating theoretical and practical factors in fatigue loading” Engineering 179 pp. 146, 1955.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023).