&lt;title&gt;Vibration damping in Ni-Mn-Ga composites&lt;/title&gt;

Feuchtwanger, J.; Griffin, Kelli; Huang, Jiankang; O’Handley, R. C.; Allen, Samuel M.; Bono, David

doi:10.1117/12.483795

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of magnetic measurements, electron microscope micrographs, and diffraction experiments will be used to show the ability of twin boundaries to move under an applied load. Similar results have been published by Scheerbaum et al [11] Hinz et al [12] , Gans et al [13], as well as by the authors [14,15,16,17,18].…”

Section: Introductionsupporting

confidence: 81%

Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites

Feuchtwanger

Richard

Lázpita

et al. 2008

MSF

Self Cite

View full text Add to dashboard Cite

Composites of Ni-Mn-Ga particles in a polyurethane matrix can be made by mixing the particles with the polymer, and allowing them to cure under a magnetic field to texture the composites. These composites show large hysteresis and mechanical losses, when subjected to a cyclic stress, that were far larger than the matrix polymer ones. The additional losses are attributed to the motion of twin boundaries in the filler particles and provide a way for obtaining mechanical energy absorption in a wide frequency range. By means of X-ray and neutron diffraction we present evidence that confirms that twins are present in the particles and that they do move when mechanically loading the composite

show abstract

Section: Introductionsupporting

confidence: 81%

Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites

Feuchtwanger

Richard

Lázpita

et al. 2008

MSF

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here there are many questions to be solved: the suitability of the matrix polymer, possible chemical reactions during the manufacturing and service, form of the MSM elements, activation of the composite, etc. Some of these are described in [181][182][183]. However, the giant MSME is not the only interesting property of the Ni-Mn-Ga alloys.…”

Section: Futurementioning

confidence: 99%

Recent breakthrough development of the magnetic shape memory effect in Ni–Mn–Ga alloys

Söderberg¹,

Ge²,

Sozinov³

et al. 2005

Smart Mater. Struct.

139

View full text Add to dashboard Cite

Magnetic shape memory (MSM) alloys or ferromagnetic shape memory alloy (FSMA) materials discovered by Ullakko et al (1996 Appl. Phys. Lett. 69 1966 have received increasing interest, since they can produce a large strain with rather high frequencies without a change in the external temperature. These materials have potential for actuator and sensor applications. MSM materials exhibit giant magnetic field induced strain (MFIS) based on the rearrangements of the crystallographic domains (twin variants). The magnetization energy of the material is lowered when such twin variants that have the easy axis of magnetization along the field start to grow due to twin boundary motion. Currently, the best working MSM materials are the near-stoichiometric Ni 2 MnGa Heusler alloys in which the properties are highly composition dependent. Their modulated martensitic structures, 5M and 7M, show 6% or 10% response respectively in a magnetic field less than 800 kA m −1 . The MSM service temperature of the 5M alloys is between 150 and 333 K, and the optimal frequency region is up to 500 Hz. The fatigue life of the MSM elements has been shown to be at least 50 × 10 6 shape change cycles. This paper reviews the research work carried out at

show abstract

“…Moreover, there exist intrinsic brittleness and eddy current losses in bulk NiMnGa alloys. To overcome those problems and lower MFIS in polycrystal NiMnGa alloys, NiMnGa/polymer composites have been investigated by some research groups [4][5][6][7][8][9][10][11]. As NiMnGa magnetic shape memory is highly anisotropic, NiMnGa/polymer composites were prepared under an orientation magnetic field to align the powder along the direction of the field [4,6,9].…”

Section: Introductionmentioning

confidence: 99%

“…To overcome those problems and lower MFIS in polycrystal NiMnGa alloys, NiMnGa/polymer composites have been investigated by some research groups [4][5][6][7][8][9][10][11]. As NiMnGa magnetic shape memory is highly anisotropic, NiMnGa/polymer composites were prepared under an orientation magnetic field to align the powder along the direction of the field [4,6,9]. The previous work about NiMnGa/polymer composites focused on the damping capacity [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…As NiMnGa magnetic shape memory is highly anisotropic, NiMnGa/polymer composites were prepared under an orientation magnetic field to align the powder along the direction of the field [4,6,9]. The previous work about NiMnGa/polymer composites focused on the damping capacity [4][5][6][7][8][9]. Up to now, there is very little report on the MFIS of NiMnGa/polymer composites [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Volume Fraction of NiMnGa Powders on Magnetic-Field-Induced Strain in NiMnGa/Polymer Composites

Sun

Xie

2010

AMR

View full text Add to dashboard Cite

Polymer composites inserted with high volume fraction of NiMnGa powders were fabricated and their magnetic-field-induced strain (MFIS) was investigated. It is found that MFIS of NiMnGa/polymer composites increases with the increase of volume fraction of NiMnGa powders in composites. Large MFIS of 950 ppm has been obtained along the orientation magnetic field while only 220 ppm was on the perpendicular orientation magnetic field.

show abstract

<title>Vibration damping in Ni-Mn-Ga composites</title>

Cited by 5 publications

References 0 publications

Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites

Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites

Recent breakthrough development of the magnetic shape memory effect in Ni–Mn–Ga alloys

Effect of Volume Fraction of NiMnGa Powders on Magnetic-Field-Induced Strain in NiMnGa/Polymer Composites

Contact Info

Product

Resources

About