國立虎尾科技大學 |

The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys./
作者:	Guiel, Roger C.
面頁冊數:	1 online resource (89 pages)
附註:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
標題:	Mechanical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369837155

The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys.
Guiel, Roger C.

The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys. - 1 online resource (89 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)

Includes bibliographical references

Single crystals of NiMn2Ga magnetic shape memory alloys (MSMAs) have been shown capable of power harvesting by exposing the material to magneto-mechanical loading that had the magnetic field and mechanical loading perpendicular to each other. In all work by other groups, the bias magnetic field was oriented along a crystallographic direction of the MSMA element. However, investigations carried out in our laboratory explored the application of the bias magnetic field at an angle relative to the crystallographic directions of the MSMA specimen. These experiments suggested that an increase in voltage output could be obtained by having a non-perpendicular orientation of the external applied field relative to the sample, and that an optimal angle of tilt for the field may exist in order to maximize the voltage/power output of an MSMA based power harvester.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369837155Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys.
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100 1 $a Guiel, Roger C. $3 1182224
245 1 4 $a The Effects of Bi-Axial Magnetic Loading on the Power Harvesting Output of Ni2MnGa Magnetic Shape Memory Alloys.
264 0 $c 2017
300 $a 1 online resource (89 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Adviser: Constantin Ciocanel.
502 $a Thesis (M.S.) $c Northern Arizona University $d 2017.
504 $a Includes bibliographical references
520 $a Single crystals of NiMn2Ga magnetic shape memory alloys (MSMAs) have been shown capable of power harvesting by exposing the material to magneto-mechanical loading that had the magnetic field and mechanical loading perpendicular to each other. In all work by other groups, the bias magnetic field was oriented along a crystallographic direction of the MSMA element. However, investigations carried out in our laboratory explored the application of the bias magnetic field at an angle relative to the crystallographic directions of the MSMA specimen. These experiments suggested that an increase in voltage output could be obtained by having a non-perpendicular orientation of the external applied field relative to the sample, and that an optimal angle of tilt for the field may exist in order to maximize the voltage/power output of an MSMA based power harvester.
520 $a The main objective of this thesis is to identify this optimal angle of tilt by deploying a combined experimental and numerical approach. A new experimental setup was developed to expose the MSMA element to bi-axial magnetic fields so that the resultant field was at a tilt angle with respect to the crystallographic directions of the MSMA. The field along the MSMA sample was applied using permanent magnets while the field in the transverse direction was applied using an electromagnet. Selected magnitudes for the field applied using permanent magnets and the field generated with the electromagnet yielded desired overall field magnitudes and orientations for the bias magnetic field vector to facilitate the identification of the sought optimal angle for maximum voltage output. Numerical simulations were also developed to estimate the distribution of the field within the MSMA while exposed to the tilted bias magnetic field and to evaluate the average tilt angle of the magnetic field vector determined by the applied axial and transverse field components.
520 $a Through several iterations of experiments the optimal angle of the bias magnetic field for maximum voltage output, has been determined to fall between 14° and 22° measured with respect to the applied bias magnetic field. Using the same sample of MSMA, frequency of excitation, and pickup coil size, the presence of the axial field increased the output from 122 mV at 0° (purely transversely applied field along a crystallographic direction) to 1280 mV at 14° (field components in axial and transverse directions simultaneously), an increase of over 900%. This dramatic change in voltage output suggests that the potential of MSMAs for power harvesting is higher than previously thought, provided that the power harvester can be designed to allow for the bias magnetic field to be applied at an angle.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
650 4 $a Engineering. $3 561152
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
690 $a 0537
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Northern Arizona University. $b Mechanical Engineering. $3 1182225
773 0 $t Masters Abstracts International $g 56-04(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10282655 $z click for full text (PQDT)