Thermal effect of heat input on an iron rod - magnetostriction

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SUMMARY

The discussion centers on the thermal effects of heat input on an iron rod subjected to magnetostriction when current flows through two coils. It is established that when the currents flow in the same direction, the iron rod initially increases in length due to magnetostrictive properties, but eventually begins to contract. When currents oppose each other, the focus shifts to thermal properties, indicating that the rod's length increases solely due to heat input. The Villari Reversal Effect is mentioned as a relevant phenomenon in this context.

PREREQUISITES
  • Understanding of magnetostriction in ferromagnetic materials
  • Basic principles of electromagnetism and current flow
  • Knowledge of thermal expansion and its effects on materials
  • Familiarity with the Villari Reversal Effect in magnetism
NEXT STEPS
  • Research the principles of magnetostriction and its applications in materials science
  • Study the Villari Reversal Effect and its implications in magnetism
  • Explore thermal expansion coefficients of iron and other ferromagnetic materials
  • Investigate experimental setups for measuring changes in length due to heat input
USEFUL FOR

Physicists, materials scientists, and engineers interested in the thermal and magnetic properties of ferromagnetic materials, particularly in applications involving magnetostriction and thermal effects.

ZedCar
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If an iron rod, inside two coils, incurs current going through the coils in the same direction, then the rod will increase in length and then it will begin to reduce in length.

This is due to the magnetostrictive properties of the iron.

When the currents oppose each other, so as to cancel, then the thermal properties only can be studied. That is, without the influence of magnetostriction.

The iron rod would increase in length due to the heat input.

But will it get to a certain length, then stop? That is, as the heat input continues to rise.

As the heat input continues to rise, I presume it won't reduce in length?

Thank you.
 
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ZedCar said:
If an iron rod, inside two coils, incurs current going through the coils in the same direction, then the rod will increase in length and then it will begin to reduce in length.

I had to look it up as this isn't my subject but are you talking about the Villari Reversal Effect?
 

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