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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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De Castro, Pmst
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2015J resistance curve behaviour of S355NL structural steel using the unloading compliance techniquecitations
- 2014X-ray Diffraction Residual Stress Measurements for Assessment of Rolling Contact Fatigue Behaviour of Railway Steelscitations
- 2013A Contribution to the Mechanical Characterization of Cu ETP Used in the Electric Motors Industry
- 2013Fatigue Crack Propagation Behavior of The Welded Steel of a Railway Bridgecitations
- 2013Rolling contact fatigue tests on wheel and rail steels
- 2012FATIGUE CRACK GROWTH TESTS IN RAILWAY WHEEL AND RAIL STEELS
- 2012Fatigue Crack Propagation Behavior in Railway Steels
- 2012Fatigue assessment of a bowstring railway bridge
- 2012Fatigue and fracture behaviour of friction stir welded aluminium-lithium 2195citations
- 2012Fatigue crack growth in railway steelcitations
- 2010Fibre Bragg grating sensors for monitoring the metal inert gas and friction stir welding processescitations
- 2009FRICTION STIR WELDING OF T-JOINTS IN DISSIMILAR ALUMINIUM ALLOYScitations
- 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
- 2006Fatigue behaviour of riveted steel lap jointscitations
- 2001Fracture analysis of forks of a heavy duty lift truckcitations
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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.