International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Failure Investigation of the Front Coil Spring of a 160 cc Motorcycle

Abstract

Coil springs in motorcycles are crucial components in the vehicle's suspension system, where they are used in the front or rear to absorb the impact energy experienced by the wheels. In this study, the coil spring experienced a failure in the form of fracture, prompting several tests to analyze the mechanism and causes of this failure. The conducted tests include visual observation, chemical composition testing, metallographic testing, hardness testing, and FEM simulation. The visual observation results indicate that the failure experienced by the coil spring is due to fatigue fracture, as defined by the presence of crack initiation, crack propagation (beachmark), and final rupture. The chemical composition testing reveals that the material used is SAE 9254 Steel, that is a low-alloy steel. The microstructure formed consisted of ferrite and pearlite phases, attributed to the absence of quenching and tempering processes during the coil spring's production. The hardness testing results show an average hardness of 216,6 HV, confirming the absence of quenching and tempering in the coil spring production process. The FEM simulation results show that the stress does not exceed the yield strength of the material.

Country : Indonesia

1 Sri Nugroho2 Yusuf Umardani3 Dosma Ruben R. Nababan

  1. Mechanical Engineering Department, Faculty of Engineering, Diponegoro University, Jl. Prof. H. Soedarto, SH, Tembalang- Semarang 50275, Indonesia
  2. Mechanical Engineering Department, Faculty of Engineering, Diponegoro University, Jl. Prof. H. Soedarto, SH, Tembalang- Semarang 50275, Indonesia
  3. Mechanical Engineering Department, Faculty of Engineering, Diponegoro University, Jl. Prof. H. Soedarto, SH, Tembalang- Semarang 50275, Indonesia

IRJIET, Volume 8, Issue 11, November 2024 pp. 181-184

doi.org/10.47001/IRJIET/2024.811020

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References

  1. Alsahlani, A., Khashan, M. K., & Khaleel, H. H., 2018. Design and analysis of coil spring in vehicles using finite elements method. International Journal of Mechanical and Production Engineering Research and Development, 8(4), 615–624.
  2. Zhu, Y., Wang, Y., & Huang, Y. 2014. Failure analysis of a helical compression spring for a heavy vehicle’s suspension system. Case Studies in Engineering Failure Analysis, 2(2), 169–173.
  3. Werner, B. T., Antoun, B. R., & Sartor, G. B. 2016. Thermal degradation of extension springs. In Challenges in Mechanics of Time Dependent Materials, 2(1).
  4. Floyd, C., Bournelis, I., & Clark, C. 2016. Use of Volute Springs in Space Applications. NASA Ames Research Center.
  5. Amiruddin, A., & Alisyahnara Lubis, F. (2018). MEKANIK. In Teknik Mesin ITM, 4(2).
  6. Kurniawan, R. T., Wibisono, A. T., & Noerochim, L. (2017). Analisis Kegagalan Komponen Spring Rod dalam Spring Suspension Assembly pada Coal Mill TubanI PT. Semen Indonesia Tbk. Jurnal Teknik ITS, 6(2), F376-F380.
  7. Wulpi D J., 1999. Understanding How Components Fail.
  8. Azwinur, A., Ismy, A. S., Nanda, R., & Ferdiyansyah, F. 2020. The effect of SMAW welding current on the strength of double lap joint welds in materials AISI 1050. Journal of Welding Technology, 2(1), 1-7.
  9. Siddiq, M., Nurdin, N., & Amalia, I. 2019. The influence of seam type on the toughness of welding joints of St37 material with AISI 1050 using the SMAW process. Journal of Welding Technology, 1(1), 11-16.

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