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'Designing-in' failures and redesign of bucket wheel excavator undercarriage
(Pergamon-Elsevier Science Ltd, Oxford, 2013)
The traveling mechanism of the C-700S bucket wheel excavator is of the two-crawler type. Rigid connections between the undercarriage and the crawler beams offer a very high factor of safety against tipping but at the same ...
Failure analysis of hydraulic turbine shaft
(Pergamon-Elsevier Science Ltd, Oxford, 2012)
This paper describes the analysis of major failure of 28 MW horizontal hydro turbine shaft. The analysis of load carrying capacity of critical radius and fractography analysis are presented. Special emphasize is on ...
Investigation into the causes of fracture in railway freight car axle
(Pergamon-Elsevier Science Ltd, Oxford, 2015)
Railway axles are vital parts of railway. Their failure in the form of dynamic fracture is commonly of disastrous outcomes for railway vehicles. Accordingly, railway axles are designed to be highly reliable, while the ...
Integrity assessment and determination of residual fatigue life of vital parts of bucket-wheel excavator operating under dynamic loads
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
In this paper are presented results of tests and analyses of complex dynamic loads carried out on the bucket-wheel excavator SchRs 650/5x24 Krupp, as well as assessment of service life of vital welded structures of a ...
Hydrogen damage of steels: A case study and hydrogen embrittlement model
(Pergamon-Elsevier Science Ltd, Oxford, 2015)
Many efforts have been made to understand the effects of hydrogen on steels, resulting in an abundance of theoretical models and papers. However, a fully developed and practically applicable predictive physical model still ...
Failure of the bucket wheel excavator buckets
(Pergamon-Elsevier Science Ltd, Oxford, 2018)
Buckets are a vital substructure of all digging machines, and are intended for the realisation of the fundamental machine function - soil excavation. This paper presents the results of the experimental-numerical investigation ...
Failures of multifunctional bulkhead caused by high gradient of temperature, pressure and speed of rotation
(Pergamon-Elsevier Science Ltd, Oxford, 2018)
The multifunctional bulkhead is an assembly which divides the compressor and turbine space (cold and very hot area) in the gas-generator for turbo-jet and turbo-haft engines. The loads of this bulkhead present an interaction ...
Failure of mounting bolt of helicopter main gearbox support strut
(Pergamon-Elsevier Science Ltd, Oxford, 2016)
The mounting bolt of helicopter main gearbox support strut was fractured into two pieces during the flight mission. The fracture occurred at the root of the first engaged thread of the bolt-nut assembly. Visual inspection ...
Failure investigation and reparation of a crack on the boom of the bucket wheel excavator ERS 1250 Gacko
(Pergamon-Elsevier Science Ltd, Oxford, 2018)
Bucket wheel excavator ERs 1250 has been in operation for over 30 years in the Grae'anica-Gacko mining basin. It is operating in very hard working conditions due to exploiting very solid material, which has adverse effects ...
Surface characteristics and cavitation damage progress in ductile materials
(Pergamon-Elsevier Science Ltd, Oxford, 2019)
In this paper the investigation and analysis of ductile materials behavior under cavitation bubble collapsing are presented. Three ductile materials (Cu, AlMnMg-alloy, and St.St.316) were treated with cavitation. The ...