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 investigations
Source:
Case Studies in Engineering Failure Analysis, 2015, 3, 80-87
TY - JOUR
AU - Bošnjak, Srđan
AU - Gnjatović, Nebojša
AU - Momčilović, Dejan
AU - Milenović, Ivan Lj.
AU - Gašić, V.M.
PY - 2015
UR - http://rims.institutims.rs/handle/123456789/276
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 and Milenović, Ivan Lj. and Gašić, V.M.",
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., Milenović, I. Lj.,& Gašić, V.M.. (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 D, 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, Milenović, Ivan Lj., Gašić, V.M., "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 . .
