A theoretical and experimental investigation of power harvesting using the NiMnGa martensite reorientation mechanism

Nickolaus M. Bruno, Constantin Ciocanel, Heidi P Feigenbaum, Alex Waldauer

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Magnetic shape memory alloys (MSMAs) can exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. The microstructure of the MSMAs is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. Starting from a random variant orientation, the application of a large enough magnetic field will cause the variants to reorient so that the internal magnetization vectors align with the external field. Then, keeping the magnetic field constant and adding a variable compressive stress in a direction normal to that of the magnetic field, some or all of the martensitic variants may rotate into a stress preferred state. As the variants reorient, the internal magnetization vectors rotate, and the materials magnetization changes. For power harvesting and sensing applications, the change in magnetization induces a current in a pickup coil placed around the MSMA specimen, resulting in an output voltage at its terminals according to Faradays law of inductance. This paper focuses on the evaluation of the voltage output, both experimentally and numerically, in an attempt to assess the ability of a MSMA thermodynamic based constitutive model, used in conjunction with Faradays law of induction, to predict the variant reorientation induced voltage output. Assessing the accuracy of the predicted voltage is beneficial for the design of both MSMA based power harvesting devices and MSMA based displacement sensors.

Original languageEnglish (US)
Article number094018
JournalSmart Materials and Structures
Volume21
Issue number9
DOIs
StatePublished - Sep 2012

Fingerprint

shape memory alloys
martensite
Shape memory effect
Martensite
retraining
Magnetization
magnetization
Magnetic fields
electric potential
magnetic fields
Electric potential
output
sensors
Pickups
inductance
Constitutive models
Compressive stress
induction
Inductance
coils

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Civil and Structural Engineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Materials Science(all)

Cite this

A theoretical and experimental investigation of power harvesting using the NiMnGa martensite reorientation mechanism. / Bruno, Nickolaus M.; Ciocanel, Constantin; Feigenbaum, Heidi P; Waldauer, Alex.

In: Smart Materials and Structures, Vol. 21, No. 9, 094018, 09.2012.

Research output: Contribution to journalArticle

@article{bded244998b04a13bdce921371e7ade4,
title = "A theoretical and experimental investigation of power harvesting using the NiMnGa martensite reorientation mechanism",
abstract = "Magnetic shape memory alloys (MSMAs) can exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. The microstructure of the MSMAs is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. Starting from a random variant orientation, the application of a large enough magnetic field will cause the variants to reorient so that the internal magnetization vectors align with the external field. Then, keeping the magnetic field constant and adding a variable compressive stress in a direction normal to that of the magnetic field, some or all of the martensitic variants may rotate into a stress preferred state. As the variants reorient, the internal magnetization vectors rotate, and the materials magnetization changes. For power harvesting and sensing applications, the change in magnetization induces a current in a pickup coil placed around the MSMA specimen, resulting in an output voltage at its terminals according to Faradays law of inductance. This paper focuses on the evaluation of the voltage output, both experimentally and numerically, in an attempt to assess the ability of a MSMA thermodynamic based constitutive model, used in conjunction with Faradays law of induction, to predict the variant reorientation induced voltage output. Assessing the accuracy of the predicted voltage is beneficial for the design of both MSMA based power harvesting devices and MSMA based displacement sensors.",
author = "Bruno, {Nickolaus M.} and Constantin Ciocanel and Feigenbaum, {Heidi P} and Alex Waldauer",
year = "2012",
month = "9",
doi = "10.1088/0964-1726/21/9/094018",
language = "English (US)",
volume = "21",
journal = "Smart Materials and Structures",
issn = "0964-1726",
publisher = "IOP Publishing Ltd.",
number = "9",

}

TY - JOUR

T1 - A theoretical and experimental investigation of power harvesting using the NiMnGa martensite reorientation mechanism

AU - Bruno, Nickolaus M.

AU - Ciocanel, Constantin

AU - Feigenbaum, Heidi P

AU - Waldauer, Alex

PY - 2012/9

Y1 - 2012/9

N2 - Magnetic shape memory alloys (MSMAs) can exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. The microstructure of the MSMAs is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. Starting from a random variant orientation, the application of a large enough magnetic field will cause the variants to reorient so that the internal magnetization vectors align with the external field. Then, keeping the magnetic field constant and adding a variable compressive stress in a direction normal to that of the magnetic field, some or all of the martensitic variants may rotate into a stress preferred state. As the variants reorient, the internal magnetization vectors rotate, and the materials magnetization changes. For power harvesting and sensing applications, the change in magnetization induces a current in a pickup coil placed around the MSMA specimen, resulting in an output voltage at its terminals according to Faradays law of inductance. This paper focuses on the evaluation of the voltage output, both experimentally and numerically, in an attempt to assess the ability of a MSMA thermodynamic based constitutive model, used in conjunction with Faradays law of induction, to predict the variant reorientation induced voltage output. Assessing the accuracy of the predicted voltage is beneficial for the design of both MSMA based power harvesting devices and MSMA based displacement sensors.

AB - Magnetic shape memory alloys (MSMAs) can exhibit the shape memory effect when there is a magnetic field in the vicinity of a material point. The microstructure of the MSMAs is comprised of tetragonal martensite variants, each with their preferred internal magnetization orientation. Starting from a random variant orientation, the application of a large enough magnetic field will cause the variants to reorient so that the internal magnetization vectors align with the external field. Then, keeping the magnetic field constant and adding a variable compressive stress in a direction normal to that of the magnetic field, some or all of the martensitic variants may rotate into a stress preferred state. As the variants reorient, the internal magnetization vectors rotate, and the materials magnetization changes. For power harvesting and sensing applications, the change in magnetization induces a current in a pickup coil placed around the MSMA specimen, resulting in an output voltage at its terminals according to Faradays law of inductance. This paper focuses on the evaluation of the voltage output, both experimentally and numerically, in an attempt to assess the ability of a MSMA thermodynamic based constitutive model, used in conjunction with Faradays law of induction, to predict the variant reorientation induced voltage output. Assessing the accuracy of the predicted voltage is beneficial for the design of both MSMA based power harvesting devices and MSMA based displacement sensors.

UR - http://www.scopus.com/inward/record.url?scp=84865974667&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865974667&partnerID=8YFLogxK

U2 - 10.1088/0964-1726/21/9/094018

DO - 10.1088/0964-1726/21/9/094018

M3 - Article

AN - SCOPUS:84865974667

VL - 21

JO - Smart Materials and Structures

JF - Smart Materials and Structures

SN - 0964-1726

IS - 9

M1 - 094018

ER -