| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Moreira, Pmgp
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Topics
Publications (19/19 displayed)
- 2020Experimental and numerical study of the dynamic response of an adhesively bonded automotive structurecitations
- 2019Oxidative Treatment of Multi-Walled Carbon Nanotubes and its Effect on the Mechanical and Electrical Properties of Green Epoxy based Nano-Compositescitations
- 2018Parameter optimisation of friction stir welded dissimilar polymers jointscitations
- 2016Mixed-mode fatigue crack propagation rates of current structural steels applied for bridges and towers construction
- 2016Modified CCS fatigue crack growth model for the AA2019-T851 based on plasticity-induced crack-closurecitations
- 2016Fatigue crack growth behaviour of the 6082-T6 aluminium using CT specimens with distinct notchescitations
- 2016Crack Closure Effects on Fatigue Crack Propagation Rates: Application of a Proposed Theoretical Modelcitations
- 2015Fatigue life prediction based on crack growth analysis using an equivalent initial flaw size model: Application to a notched geometrycitations
- 2015Ultimate tensile strength optimization of different FSW aluminium alloy jointscitations
- 2014Friction stir welded T-joints optimizationcitations
- 2014Friction stir welded butt joints optimizationcitations
- 2013A Contribution to the Mechanical Characterization of Cu ETP Used in the Electric Motors Industry
- 2012Fatigue and fracture behaviour of friction stir welded aluminium-lithium 2195citations
- 2010Fibre Bragg grating sensors for monitoring the metal inert gas and friction stir welding processescitations
- 2008A study on the effects of dented surfaces on rolling contact fatiguecitations
- 2008Fatigue crack growth in friction stir welds of 6082-T6 and 6061-T6 aluminium alloys: A comparisoncitations
- 2007Assessment of the fatigue behaviour of friction stir welded joints: Aluminium alloy 6082-T6
- 2007Fatigue behaviour of FSW and MIG weldments for two aluminium alloyscitations
- 2007Temperature field acquisition during gas metal arc welding using thermocouples, thermography and fibre Bragg grating sensorscitations
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document
A Contribution to the Mechanical Characterization of Cu ETP Used in the Electric Motors Industry
Abstract
The analysis of Cu ETP of a component of electric motors manufactured by WEG is presented. The work included three main tasks: metallographic analyses at the micro and macro levels; mechanical testing; scanning electron microscopy observations. The objective was the evaluation of the state of bars material before and after service. It was found that material in both conditions presents similar microstructures. This indicates that, despite the rotor working at temperatures above 300 degrees C, no grain recrystallization can be identified. It was verified that the copper bar base material presents higher hardness values of than the copper ring. A decrease of yield and rupture stresses as the temperature increases was observed during tensile tests at different temperatures. During testing, a fatigue life of 10(7) cycles for a remote stress of approximately 134MPa is estimated. It can be concluded that the material after and before service presents different properties, the first one presenting lower strength. This behavior is reflected in lower hardness, yield and rupture stress of the material taken from the fractured rotor bars. This observation can be a result of the high temperature (above 300 degrees C) that is present in the rotor during each start.