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18 April 2022 Strain field evaluation in Ni2MnGa magnetic shape memory alloys under combined tensile and magnetic loading using digital image correlation
Glen D'Silva, Heidi P Feigenbaum, Constantin Ciocanel
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Proceedings Volume PC12044, Behavior and Mechanics of Multifunctional Materials XVI; (2022) https://doi.org/10.1117/12.2621384
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States
Abstract
This study will report on the characterization of strain fields through DIC in Ni2MnGa alloys under combined tensile and magnetic loading. The DIC approach allows us to observe the evolution of the strain field over the entire sample, concurrent with the evolution of the twin microstructure of the sample, providing a more comprehensive insight on material behavior than traditional strain measurement techniques. Preliminary results confirm that the strain field, during quasi-static tensile loading, is highly dependent on the nature of the sample microstructure (coarse or fine twin microstructure), and that pinning sites exist along the sample despite being a single crystal sample. The knowledge obtained from this study can be used to expand the realm of MSMA based applications, and to improve constitutive model predictions by accurately predicting the tensile response of the material.
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Glen D'Silva, Heidi P Feigenbaum, and Constantin Ciocanel "Strain field evaluation in Ni2MnGa magnetic shape memory alloys under combined tensile and magnetic loading using digital image correlation", Proc. SPIE PC12044, Behavior and Mechanics of Multifunctional Materials XVI, (18 April 2022); https://doi.org/10.1117/12.2621384
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KEYWORDS
Magnetism
Digital image correlation
Shape memory alloys
Crystals
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