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Electric Current Density and Temperature Field around Corner Crack at a Hole under Joule Heating

Thomas Jin-Chee Liu

Abstract

Using the coupled-field finite element method, this paper discusses the electric current density and temperature field around the corner crack at a hole in a metal plate under the electric load.As a result, the Joule heating effect causes a local hot point at the crack tip.This hot point can be applied on the crack detection or crack arrest.By varying the magnitude of the external current, the crack arrest or crack detection can be achieved.

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Available abstract

Key concepts: Joule heating, Current (fluid), Current density, Electric field, Crack tip opening displacement, Materials science, Finite element method, Joule effect