Failure analysis of motorcycle shock breakers

Abstract: The shock breaker is one of the most important parts of a motorcycle, which functions as a vibration damper. This study aims to analyze the causes of motorcycle shock breaker failure. The research method used is comprised of visual observation, chemical composition testing, Vickers hardness testing, scanning electron microscopy-energy dispersive X-ray spectroscopy analysis, and tensile testing of a damaged shock breaker. From visual observation, it is found that the damage can be classified as a fatigue fracture, forming a damage pattern at 45°. The chemical composition testing results of the shock breaker fractures show that the material includes low-carbon alloy steel (of ST42 series) with a carbon content of 0.162%. The average hardness value of the damaged part of the shock breaker was increased to 204.87 HV, compared with 171.02 HV in areas far from the damage. The difference in hardness in the shock breaker was caused by the high stress acting on the shock breaker and the consequent strain hardening. The results of this study indicate that the failure mechanism of the motorcycle shock breaker was a functional failure due to errors in the shock breaker manufacturing process and fatigue.

Object Details

• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch

References and Relationships

• Bibliographic citation: Failure analysis of motorcycle shock breakers ; volume:11 ; number:1 ; year:2021 ; pages:1150-1159 ; extent:10 ; Open engineering ; 11, Heft 1 (2021), 1150-1159 (gesamt 10)

Contributors, Places and Time

• Creator: Mahendra, Afrizal Yose ; Prabowo, Aditya Rio ; Triyono, Triyono

Further information

• DOI: 10.1515/eng-2021-0109
• URN: urn:nbn:de:101:1-2412141720204.050408305493
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 15.08.2025, 7:22 AM CEST