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Magnetic characterization of ferromagnetic shape memory components under defined mechanical loading

 
: Ehle, Fabian; Neumeister, Peter; Haufe, Eric; Neubert, Holger

:

Shape memory and superelasticity 6 (2020), No.1, pp.10-23
ISSN: 2199-384X (Print)
ISSN: 2199-3858 (Online)
International Conference on Ferromagnetic Shape Memory Alloys (ICFSMA) <6, 2019, Prague>
Deutsche Forschungsgemeinschaft DFG
Sachbeihilfe; NE 1836/1-1; MAGEMI
English
Journal Article, Conference Paper
Fraunhofer IKTS ()
ferromagnetic shape memory alloy; FSMA; Ni-Mn-Ga

Abstract
The present paper introduces a novel test procedure for the quasistatic magnetic characterization of FSMA (ferromagnetic shape memory alloy) components under mechanical loading for the use in actuator-level modelling. Its development was necessary due to certain requirements coming from the twin structure and shape of typical FSMA components which are not met by the presented test setups up to now. The measurements carried out in the developed test setup are verified by a reference sample and FE simulations. Error sources are discussed and the main systematic error is calculated. After correcting the remaining error, the acquire data correspond well to data from literature and show a physical consistency. The developed test procedure is hence able to measure effective but absolute magnetization properties of FSMA components under mechanical loading. The data directly and can be applied to any kind of actuator level modeling.

: http://publica.fraunhofer.de/documents/N-577664.html