Paper Title:
Stress Concentration Positions Determination of Ferromagnetic Material Based on Magnetic Test Method
  Abstract

The magnetic field of ferromagnetic components under service load and geomagnetic field increases is induced by the residual magnetic induction and spontaneous magnetization. The stress concentration positions can be determination by detecting the magnetic field and the fracture can be avoided. The magnetic intensities of the demagnetized samples are tested by metal magnetic memory test method. By tensile test, the relationship between the magnetic memory signals and tensile load is studied, and the metal magnetic memory characteristics of the demagnetized samples under condition that the load keeps a fixed value are obtained. The test result indicates that the magnetic intensities of the samples change greatly after demagnetized; the change of the magnetic intensity of each test point are much different with different tensile displacement; in the later period of hardening phase and necking phase, the magnetic intensity about the side of the stress concentration positions increases along with the increasing of tensile displacement, however that of the other side decreases, that is the gradient of Fracture position increases obviously. Basing on this result by testing the parts of components emphatically where the fatigue failure and breakdown appear easily, the abrupt accident can be avoided.

  Info
Periodical
Key Engineering Materials (Volumes 417-418)
Edited by
M.H Aliabadi, S. Abela, S. Baragetti, M. Guagliano and Han-Seung Lee
Pages
865-868
DOI
10.4028/www.scientific.net/KEM.417-418.865
Citation
F. Y. Yu, J. C. Zhang, "Stress Concentration Positions Determination of Ferromagnetic Material Based on Magnetic Test Method", Key Engineering Materials, Vols. 417-418, pp. 865-868, 2010
Online since
October 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wen Hui Tan, Lei Zhang, Dan Qing Gao, Ya Liang Li
Chapter 7: Machining
Abstract:How the mechanical parameters of rock change with the development of joints and fractures is still a puzzle. It is hard to measure rock...
1849
Authors: Shou Xu Song, De Qiao Yu, Hui Cha
Chapter 1: Applied Mechanics, Vibration and Acoustics
Abstract:A new method to recycle radial tyre is studied, using Ultra-High Pressure Water jet to cut the tread rubber. The dynamic constitutive model...
117
Authors: A.S. Kiselev, A.S. Gordynets, R.I. Dedyuh, Yu.N. Saraev, V.P. Bezborodov
Chapter 1: Mechanical Engineering, Processing and Surface Engineereng, Metals Treatment, Equipment and Tools
Abstract:Issues of development of adaptive pulse-arc welding methods for construction and repair of the main pipelines are considered in this work....
132