Type

Journal Article

Authors

Tim Prescott
Dermot Brabazon
S. Bakir
Aran Rafferty

Subjects

Engineering

Topics
cobalt ferrite displacement sensor magnetostriction materials system calibration magnetic field strength mechanical engineering terfenol d

Calibration and characterisation with a new laser-based magnetostriction measurement system (2009)

Abstract A laser-based magnet measurement system has been developed to measure the magnetostrictive strain of large cylindrical samples. The measurement system incorporates a solenoid capable of generating a maximum magnetic field intensity of 3000 Oe and a laser displacement sensor. For calibration and evaluation purposes, the positive magnetostrictions of two different types of giant magnetostrictive Tb–Dy–Fe-based materials were accessed with this system. A magnetostrictive strain of 622 ppm was obtained at 3000 Oe for TbxDy1-xFe2-y, compared with 725 ppm for Tb0.27Dy0.73Fe2. A rod of sintered cobalt ferrite was also measured. This exhibited negative magnetostriction, with a maximum contraction of 260 ppm at 3000 Oe.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing: School of Mechanical and Manufacturing Engineering
Ireland -> Dublin City University -> Subject = Engineering: Mechanical engineering
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Engineering and Computing
Ireland -> Dublin City University -> Subject = Engineering: Materials
Ireland -> Dublin City University -> Subject = Engineering

Full list of authors on original publication

Tim Prescott, Dermot Brabazon, S. Bakir, Aran Rafferty

Experts in our system

1
Dermot Brabazon
Dublin City University
Total Publications: 162
 
2
Aran Rafferty
Trinity College Dublin
Total Publications: 6