The Effect of Thread Depth on the Fatigue Strength of AISI 4140 Bolt Material as a Retainer and Fastener for a Screw Conveyor
Abstract
The bolts used to retainer and fasten the shaft of the screw conveyor, which functions to transport wood chips to the cooking process in paper manufacturing, have experienced failure. The failure occurred in the form of a perpendicular fracture on the threaded section of the bolt. This damage significantly disrupts wood processing operations, making it important to investigate the causes. The causes of bolt fracture and its short service life were analyzed by studying the effect of thread pitch variations of 2.5 mm and 2 mm. The material tested was Valmet (VME), which is equivalent to AISI 4140. The fatigue test was conducted using a cantilever rotating bending method with the test specimens according to ASTM E466M standards. The results showed that to achieve infinite life, the stress level must be below 95 MPa. Thread pitch has a significant effect: VME bolts with a thread pitch of 2 mm showed a 17% longer endurance than bolts pitch of 2.5 mm.
##Keywords:##
Bolts, Pitch, Infinite Life, Endurance, Fatigue.
Published
Mar 30, 2026
How to Cite
HIDAYAT, Alvi; DALIL, M; ARIEF, Dodi Sofyan.
The Effect of Thread Depth on the Fatigue Strength of AISI 4140 Bolt Material as a Retainer and Fastener for a Screw Conveyor.
Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 70, n. 1, p. 72-77, mar. 2026.
ISSN 2527-6085.
Available at: <https://isomase.org/Journals/index.php/jomase/article/view/572>. Date accessed: 25 apr. 2026.
doi: http://dx.doi.org/10.36842/jomase.v70i1.572.
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[5] Kuroda, M., Marrow, T. J. & Sherry, A. H. (2008). Effects of surface finish on fatigue in austenitic stainless steels.
[6] Aji, W. S. & Nugroho, S. (2014). Analisis kegagalan baut pengikat gearbox pada lokomotif kereta rel diesel elektrik (KRDE). Jurnal Teknik Mesin, 2(4).
[7] Yudiono, H. (2009). Karakterisasi ketahanan lelah ulir metris akibat pembebanan puntir lentur pada material baja karbon rendah. Momentum, 5(2), 37–40.
[8] Atho’ullah, A. H. & Yudiono, H. (2020). Karakterisasi ketahanan lelah takik ulir Whitworth akibat pembebanan puntir dinamis pada baja karbon rendah. Jurnal Dinamika Vokasional Teknik Mesin, 5(2), 154–162. https://doi.org/10.21831/dinamika.v5i2.34796.
[9] ASTM E8/E8M Committee. (2013). Standard test methods for tension testing of metallic materials. ASTM International. https://doi.org/10.1520/E0008_E0008M-13A.
[10] ASTM E466 Committee. (2002). Standard practice for conducting force controlled constant amplitude axial fatigue tests of metallic materials. ASTM International.
[11] Prasetyo, A., Afrizal, E. & Nazaruddin, N. (2023). Development of rotary fatigue test equipment based on the Joseph Marin approach. Journal of Ocean, Mechanical and Aerospace Science and Engineering, 67(3), 95–100. https://doi.org/10.36842/jomase.v67i3.344.
[12] Mohammed, A. & Abdullah, A. (2018). Scanning electron microscopy (SEM): A review. In Proceedings of the 2018 International Conference on Hydraulics and Pneumatics.
[13] Hudgins, A. & James, B. (2014). Fatigue of threaded fasteners. AM&P Technical Articles, 172(8), 18–22. https://doi.org/10.31399/asm.amp.2014-08.p018.
[14] ASM International Handbook Committee. (1986). Failure analysis and prevention (ASM Handbook, Vol. 11). ASM International.
[15] Callister, W. D. (2019). Materials science and engineering. Wiley.
[16] Hendri, D., Susanto, H. & Ali, S. (2024). Analisa kegagalan baut pengikat pelat trunnion linner pada unit cement mill 1 di PT. X. Jurnal Teknik Mesin, 10(1).
[17] Okazaki, Y. (2012). Comparison of fatigue properties and fatigue crack growth rates of various implantable metals. Materials, 5(12), 2981–3005. https://doi.org/10.3390/ma5122981.
[18] Guo, X., Zhao, L., Liu, X. & Lu, F. (2019). Investigation on the resistance to fatigue crack growth for weld metals with different Ti addition in near-threshold regime. International Journal of Fatigue, 120, 1–11. https://doi.org/10.1016/j.ijfatigue.2018.10.018.
[19] Katani, S., et al. (2013). Microstructure modelling of dual-phase steel using SEM micrographs and Voronoi polycrystal models. Metallography, Microstructure, and Analysis, 2(3), 156–169. https://doi.org/10.1007/s13632-013-0075-7.
[20] Akbar, M. (2016). Failure prediction of cracked pressure vessel under fatigue load based on API 579 standard and finite element method. International Journal of Pressure Vessels and Piping, 37.
