Numerical and Experimental Studies of Joule Heating Effects around Crack and Notch Tips

This paper investigates the thermo-electric effects
around the crack and notch tips under the electric current load. The
research methods include the finite element analysis and thermal
imaging experiment. The finite element solutions show that the electric
current density field concentrates at the crack tip. Due to the Joule
heating, this electric concentration causes the hot spot at the tip zone.
From numerical and experimental results, this hot spot is identified.
The temperature of the hot spot is affected by the electric load,
operation time and geometry of the sample.

Authors:

• Thomas Jin-Chee Liu
• Ji-Fu Tseng
• Yu-Shen Chen

Keywords:

• Thermo-electric
• Joule heating
• crack tip
• notch tip.

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