Three dimensional experimental characterization of a NiMnGa alloy

Isaac Nelson, Constantin Ciocanel, Doug LaMaster, Heidi P Feigenbaum

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Magnetic shape memory alloys (MSMAs) are materials that can display up to 10% recoverable strain in response to the application of a magnetic field or compressive mechanical stress. The recoverable strain depends on the magnitude of the stress and magnetic field that is applied to the material. Due to their large strains as well as fast response, MSMAs are suitable for actuation, power harvesting, and sensing applications. Broadening the range of applications for MSMAs requires an understanding of their magneto-mechanical behavior beyond 2D loading cases that have been studied to date. The response of MSMAs is primarily driven by the reorientation of martensite variants. During the reorientation process a change in material's magnetization occurs. Using a pick-up coil (placed around, or on the side, of the specimen) one may convert this change in magnetization into an electric potential/voltage, making the material act as a power harvester. The magnitude of the output voltage depends on the number of turns of the pick-up coil, the amplitude of the reorientation strain, the magnitude and direction of the biased magnetic field, and the frequency at which the reorientation occurs. This paper presents experimental results for the material behavior under 3D loading conditions, including power harvesting data generated under such loading conditions. The 3D experimental data includes the material's response to two compressive mechanical stresses, applied in perpendicular directions, simultaneously with the application of a magnetic field applied in the remaining orthogonal direction. The power harvesting data includes magnetic fields in multiple directions and different orientations of the pick-up coil. Results indicate that the presence of a bias magnetic field along the specimen length (i.e. the direction of application of the compressive stress) in addition to that applied normal to the specimen length, leads to an increase in the electric potential output.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume8689
DOIs
StatePublished - 2013
EventBehavior and Mechanics of Multifunctional Materials and Composites 2013 - San Diego, CA, United States
Duration: Mar 10 2013Mar 14 2013

Other

OtherBehavior and Mechanics of Multifunctional Materials and Composites 2013
CountryUnited States
CitySan Diego, CA
Period3/10/133/14/13

Fingerprint

Power Harvesting
Shape Memory
Magnetic Field
shape memory alloys
Magnetic fields
Shape memory effect
Three-dimensional
retraining
Coil
magnetic fields
Mechanical Stress
coils
Electric Potential
Electric potential
electric potential
Magnetization
Voltage
Martensite
magnetization
Large Strain

Keywords

  • 3D magneto-mechanical response
  • Magnetic shape memory alloy
  • Power harvesting

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Nelson, I., Ciocanel, C., LaMaster, D., & Feigenbaum, H. P. (2013). Three dimensional experimental characterization of a NiMnGa alloy. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8689). [86890Q] https://doi.org/10.1117/12.2024874

Three dimensional experimental characterization of a NiMnGa alloy. / Nelson, Isaac; Ciocanel, Constantin; LaMaster, Doug; Feigenbaum, Heidi P.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8689 2013. 86890Q.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nelson, I, Ciocanel, C, LaMaster, D & Feigenbaum, HP 2013, Three dimensional experimental characterization of a NiMnGa alloy. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 8689, 86890Q, Behavior and Mechanics of Multifunctional Materials and Composites 2013, San Diego, CA, United States, 3/10/13. https://doi.org/10.1117/12.2024874
Nelson I, Ciocanel C, LaMaster D, Feigenbaum HP. Three dimensional experimental characterization of a NiMnGa alloy. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8689. 2013. 86890Q https://doi.org/10.1117/12.2024874
Nelson, Isaac ; Ciocanel, Constantin ; LaMaster, Doug ; Feigenbaum, Heidi P. / Three dimensional experimental characterization of a NiMnGa alloy. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8689 2013.
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