Failure analysis of the mobile elevating work platform
Abstract
This paper presents an investigation of the accident which occurred during startup of the extending structure from the transport position. In order to clarify the causes of crack occurrence along almost the entire surface of the lever cross-section, the authors performed visual, experimental (chemical composition, tensile properties, microhardness) as well as metallographic examinations. Stress states in the critical zone are defined by applying the finite element method (FEM). Based on the investigation results it was concluded that the lever breakdown is predominantly caused by both the 'operating-in' defect (the malfunction of the limit switch) and the 'manufacturing-in' defect (poor weld quality). The investigation results presented in this paper are important because same or similar problems could arise in supporting structures of various types of transportation, construction and mining machines.
Keywords:
Mobile elevating work platform / Finite element analysis / Failure / Experimental investigationsSource:
Case Studies in Engineering Failure Analysis, 2015, 3, 80-87Publisher:
- Elsevier Ltd
Funding / projects:
- Sustainability and improvement of mechanical systems in energetic, material handling and conveying by using forensic engineering, environmental and robust design (RS-MESTD-Technological Development (TD or TR)-35006)
Institution/Community
Mašinski fakultetTY - JOUR AU - Bošnjak, Srđan AU - Gnjatović, Nebojša AU - Momčilović, Dejan B. AU - Milenović, Ivan Lj. AU - Gašić, Vlada PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2146 AB - This paper presents an investigation of the accident which occurred during startup of the extending structure from the transport position. In order to clarify the causes of crack occurrence along almost the entire surface of the lever cross-section, the authors performed visual, experimental (chemical composition, tensile properties, microhardness) as well as metallographic examinations. Stress states in the critical zone are defined by applying the finite element method (FEM). Based on the investigation results it was concluded that the lever breakdown is predominantly caused by both the 'operating-in' defect (the malfunction of the limit switch) and the 'manufacturing-in' defect (poor weld quality). The investigation results presented in this paper are important because same or similar problems could arise in supporting structures of various types of transportation, construction and mining machines. PB - Elsevier Ltd T2 - Case Studies in Engineering Failure Analysis T1 - Failure analysis of the mobile elevating work platform EP - 87 SP - 80 VL - 3 DO - 10.1016/j.csefa.2015.03.005 ER -
@article{ author = "Bošnjak, Srđan and Gnjatović, Nebojša and Momčilović, Dejan B. and Milenović, Ivan Lj. and Gašić, Vlada", year = "2015", abstract = "This paper presents an investigation of the accident which occurred during startup of the extending structure from the transport position. In order to clarify the causes of crack occurrence along almost the entire surface of the lever cross-section, the authors performed visual, experimental (chemical composition, tensile properties, microhardness) as well as metallographic examinations. Stress states in the critical zone are defined by applying the finite element method (FEM). Based on the investigation results it was concluded that the lever breakdown is predominantly caused by both the 'operating-in' defect (the malfunction of the limit switch) and the 'manufacturing-in' defect (poor weld quality). The investigation results presented in this paper are important because same or similar problems could arise in supporting structures of various types of transportation, construction and mining machines.", publisher = "Elsevier Ltd", journal = "Case Studies in Engineering Failure Analysis", title = "Failure analysis of the mobile elevating work platform", pages = "87-80", volume = "3", doi = "10.1016/j.csefa.2015.03.005" }
Bošnjak, S., Gnjatović, N., Momčilović, D. B., Milenović, I. Lj.,& Gašić, V.. (2015). Failure analysis of the mobile elevating work platform. in Case Studies in Engineering Failure Analysis Elsevier Ltd., 3, 80-87. https://doi.org/10.1016/j.csefa.2015.03.005
Bošnjak S, Gnjatović N, Momčilović DB, Milenović IL, Gašić V. Failure analysis of the mobile elevating work platform. in Case Studies in Engineering Failure Analysis. 2015;3:80-87. doi:10.1016/j.csefa.2015.03.005 .
Bošnjak, Srđan, Gnjatović, Nebojša, Momčilović, Dejan B., Milenović, Ivan Lj., Gašić, Vlada, "Failure analysis of the mobile elevating work platform" in Case Studies in Engineering Failure Analysis, 3 (2015):80-87, https://doi.org/10.1016/j.csefa.2015.03.005 . .