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Content Provider | IEEE Xplore Digital Library |
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Author | Ching Yin Lo Siu Wing Or Helen Lai Wa Chan |
Copyright Year | 1965 |
Abstract | A Terfenol-D continuous-fiber composite with a preferred [112] crystallographic orientation was fabricated by embedding 50-vol% [112]-oriented Terfenol-D continuous fibers of 45 mm long and 1 mm wide in an epoxy matrix, and its magnetic and magnetostrictive properties were evaluated as a function of magnetic field. A [112]-oriented short-fiber composite with reduced Terfenol-D fiber lengths of 4 mm and a randomly oriented particulate composite with irregularly shaped Terfenol-D particles of 10-300 mum size, both with 50-vol% Terfenol-D, were also prepared and characterized for comparison with the continuous-fiber composite and monolithic Terfenol-D. The continuous-fiber composite demonstrated the largest magnetostrictive response with the highest saturation magnetostriction (lambdaS ) of 1265 ppm. This lambdaS not only is 23% and 92% larger than the short-fiber and particulate composites, respectively, but also exceeds the monolithic Terfenol-D by 14%. The higher lambda S compared to the monolithic Terfenol-D, short-fiber composite, and particulate composite mainly originates from the residual compressive stresses developed in the continuous fibers during epoxy cure, a higher fiber aspect ratio for greater stress transfer from the fibers to the matrix, and texturing of the fibers along the highly magnetostrictive [112] crystallographic axis, respectively |
Sponsorship | IEEE Magnetics Society |
Starting Page | 3111 |
Ending Page | 3113 |
Page Count | 3 |
File Size | 454380 |
File Format | |
ISSN | 00189464 |
Volume Number | 42 |
Issue Number | 10 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2006-10-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Magnetostriction Crystallography Saturation magnetization Magnetic properties Magnetic materials Composite materials Compressive stress Crystalline materials Physics Magnetic fields Terfenol-D [112] crystallographic orientation domain-wall motion fiber composites magnetostriction particulate composites |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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