Analysis on the Temperature Field when Crack Arresting in an Axial Symmetry Metal Die by Pulse Current Discharged

Abstract:

Article Preview

When a suitable pulse current is introduced into a metal die containing a crack, the current concentration effect is immediately apparent, small welded joints are formed at a small sphere near the crack tip inside the metal die by metal melting as a result of the heat concentration effect. An axial symmetric metal die with a half–embedded crack on the top face is the object studied. The high intensity pulse current is switched on and flows from the outer to the inner surface of the hollow metal die. The complex function method is used to solve for the temperature field around the crack tip at the moment when the pulse current is switched on. The expression for the temperature field provides the basis for determining the current density and current direction. The experiment surveys show that the temperature around the crack tip grows up instantly above the melting point of the metal, the round crack tip is melted.

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Edited by:

J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel

Pages:

765-768

Citation:

L. J. Zheng and Y. M. Fu, "Analysis on the Temperature Field when Crack Arresting in an Axial Symmetry Metal Die by Pulse Current Discharged ", Key Engineering Materials, Vols. 348-349, pp. 765-768, 2007

Online since:

September 2007

Export:

Price:

$38.00

[1] Bai Xiangzhong. Theoretical Study and Application of the Magnet-elasticity and Thermo-elasticity, Chinese Journal of Mechanics Advance. Vol. 26 (1996), p.389.

[2] Bai, Xiangzhong, Qiao, Guiying. The Temperature Field on The Crack Tip under The Influence of a Pulse Electric Current in a Thin Conductive Plate, Chinese Journal of Experimental Mechanics, vol. 15(2000), p.354.

[3] Fu Yuming, Bai Xiangzhong, Hu Yuda. Technique for Producing Crack Arrest by Electromagnetic Heating. Materials Science and Technology, UK, Vol. 12 (2001), p.1653.

[4] Wang Puxuan. Heating transferring in Engineering. Beijing: Science Press, p.205 (1982).

Fetching data from Crossref.
This may take some time to load.