Relation b/w elctrical resistance and stress-strain

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SUMMARY

The discussion centers on the relationship between electrical resistance and the stress-strain characteristics of a spring coil heating element. The user observed that when straightening a section of the heating coil, the straightened part emitted less heat compared to the coiled section when current was applied. This phenomenon is attributed to increased cooling airflow around the straight wire, which affects its temperature and, consequently, its electrical resistance. The implications suggest that mechanical deformation can influence thermal performance in electrical components.

PREREQUISITES
  • Understanding of electrical resistance and its dependence on temperature
  • Basic knowledge of stress-strain relationships in materials
  • Familiarity with thermal conductivity and heat transfer principles
  • Awareness of the properties of heating elements, specifically coil-type heaters
NEXT STEPS
  • Research the impact of mechanical stress on electrical resistance in materials
  • Explore the principles of heat transfer in electrical components
  • Study the effects of airflow on thermal performance in heating elements
  • Investigate the material properties of heating coils and their behavior under deformation
USEFUL FOR

Electrical engineers, materials scientists, and anyone involved in the design and optimization of heating elements and thermal systems.

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Hey All!

My question is regrading a subtle observation that i made when i was straing at my "spring coil type" room heater. Accidently i pulled up some stands of heating coil spring to make them straight section (obviuosly when it was switched off). Then, when i passed current through it, after some time, i found that the straight section's color was less "red hot" than the other part of spring.

Does it has anything to do with change in electrical resistance with stress-strain.

Please explain.
 
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More likely, this is because there is more cooling air flow around the length of straight wire than around the same length of "coiled up" wire.
 
AlephZero said:
More likely, this is because there is more cooling air flow around the length of straight wire than around the same length of "coiled up" wire.

Thanks for the explanation.
 

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