By Topic

Magnetomechanical effects under applied stresses and unloaded conditions by a probe with indirect pickup coil

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Liu, T. ; NDE & SRC, Iwate Univ., Japan ; Kikuchi, H. ; Ara, K. ; Kamada, Y.
more authors

In this work, a yoke probe with pickup coil wound around the yoke is adopted to study the magnetic property dependences on both external stress and stress induced defects under the condition of loading, reloading and unloading in the tensile test. A carbon steel plate annealed at 1273 K is used. A family of B-H hysteresis minor loops are measured under a triangle wave of 0.05 Hz at the current range between 0.005 and 1.0 A after each demagnetization. Magnetic flux density is calculated by integrating the detection signal of pickup coil. In the elastic range when applied field amplitude Ha is 11.5 kA/m, coercive field Hc decreases proportionally with the increasing of the external stresses because of the domain being re-orientated to the stress direction to minimize magnetoelastic energy. In the plastic range, Hc increases linearly with the external stress, because the effect of the dislocation pinning is much larger than that of the external stress. In addition, Hc decreases proportionally and quickly with the reload elastic external stress from 0 to 90 MPa, while it si nearly constant from 90 MPa to 180 MPa. This is attributed to the fact that the texture structure induced from plastic deformation under 180 MPa facilitates the domain reorientation under lower elastic external stresses. Measuring results by the current probe with indirect pickup coil effectively reflect the changes of magnetic properties derived from external stresses and micro-defects.

Published in:

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Date of Conference:

4-8 April 2005