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Edge-Quality Effects on Mechanical Properties of Stamped Non-Oriented Electrical Steel
Technical Paper
2020-01-1072
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
The market for electric vehicles and hybrid electric vehicles is expected to grow in the coming years, which is increasing interest in design optimization of electric motors for automotive applications. Under demanding duty cycles, the moving part within a motor, the rotor, may experience varying stresses induced by centrifugal force, a necessary condition for fatigue.
Rotors contain hundreds of electrical steel laminations produced by stamping, which creates a characteristic edge structure comprising rollover, shear and tear zones, plus a burr. Fatigue properties are commonly reported with specimens having polished edges. Since surface condition is known to affect fatigue strength, an experiment was conducted to evaluate the effect of sample preparation on tensile and fatigue behavior of stamped specimens.
Tensile properties were unaffected by polishing. In contrast, polishing was shown to increase fatigue strength by approximately 10-20% in the range of 105-107 cycles to failure.
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Lakkonavar, V., Kavi, S., Jones, P., Thompson, M. et al., "Edge-Quality Effects on Mechanical Properties of Stamped Non-Oriented Electrical Steel," SAE Technical Paper 2020-01-1072, 2020, https://doi.org/10.4271/2020-01-1072.Data Sets - Support Documents
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References
- Dehmani , H. , Brugger , C. , Palin-Luc , T. , Mareau , C. et al. Characterization and Simulation of the Effect of Punching on the High Cycle Fatigue Strength of Thin Electric Steel Sheets 6th Fatigue Design Conference, Fatigue Design 2015
- Dehmani , H. , Brugger , C. , Palin-Luc , T. , Mareau , C. et al. Experimental Study of the Impact of Punching Operations on the High Cycle Fatigue Strength of Fe-Si Thin Sheets International Journal of Fatigue 82 721 729 2016 10.1016/j.ijfatigue.2015.09.030
- Dehmani , H. , Brugger , C. , Palin-Luc , T. , Mareau , C. et al. Study of the Contribution of Different Effects Induced by the Punching Process on the High Cycle Fatigue Strength of the M330-35a Electrical Steel Procedia Structural Integrity 2 3256 3263 2016 10.1016/j.prostr.2016.06.406
- Liying , D. , Guifeng , Z. , Jing , L. , Wenmin , S. et al. Fatigue Cracking Characterization of High Grade Non-oriented Electrical Steels Journal of Wuhan University of Technology-Mater. Sci. Ed. Dec.2017 10.1007/s11595-017-1749-9
- Kovaleva , T.G. , Polandova , A.N. , Smorodin , V.I. , Kovalev , A.I. et al. Effect Of An Alternating Magnetic Field On The Fatigue Resistance Of Electrical-Engineering Steel 3413 Plenum Publishing Corporation 1985
- Tanaka , I. and Yashiki , H. Magnetic and Mechanical Properties of Newly Developed High-Strength Nonoriented Electrical Steel IEEE Transactions on Magnetics 46 2 February 2010
- Gao , Y. , Long , R. , Pang , Y. , and Lindenmo , M. Fatigue Properties of an Electrical Steel and Design of EV/HEV IPM Motor Rotors for Durability and Efficiency SAE Technical Paper 2010-01-1308 2010 https://doi.org/10.4271/2010-01-1308
- Tanaka , I. , and Yashiki , H. Recent Advances In Non-Oriented Electrical Steel For EV/HEV Traction Motor Supplemental Proceedings: Volume 1: Materials Processing and Energy Materials TMS (The Minerals, Metals & Materials Society) 2011
- Hoecke , D.V. , Jacobs , S. , Vandenbossche , L. , Weber , B. et al. November 17-20, 2013
- ASTM Standard E8-13a Standard Test Method Tension Testing of Metallic Materials ASTM International 2013
- ASTM Standard E466-07 Standard Practice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials ASTM International 2007
- ASTM Standard E1012-14 Standard Practice for Verification of Testing Frame and Specimen Alignment Under Tensile and Compressive Axial Force Application ASTM International 2014
- Yamamoto , K. Development of Motors for EV FCV and HEV Proceedings of the 2005 International Power Electronics Conference 1489 1494
- Chen , X. , Thornton , R. , Edington , M. , Lewis , R. et al. Accurate Torque Control of IPM Machines for ISG Hybrid Vehicle Applications SAE Technical Paper 2007-01-3482 2007 https://doi.org/10.4271/2007-01-3482