Elastic limit for thermal stress?

Replies

• 

  Sarathkumar Chandrasekaran

  Write in detail so that we can help you.
• 

  m.vivekanandan

  SarathKumar Chandrasekaran

  Write in detail so that we can help you.

  after the tensile testing of a material ,we plot a graph with stress and strain where we find the elastic limit of the material i.e the limit where material return back to original state when the load applied is removed,likewise we have elastic limit for compressive and shear stresses.like wise is there a elastic limit for thermally induced stresses(stress caused in the material due the temperature change in surrounding)?
  hope it is clear now.
• 

  Siddhant Mukherjee

  @#-Link-Snipped-# : Before answering to your question, let me throw some light on what thermal stres actually is. Thermal stresses are induced in a body if and only if you restrain it to expand or contract under temperature changes. If a body kept on a table and heated, there will be no stresses developed in it. So, thermal stress is nothing but a normal or shear stress developed if you restrain a body's thermal expansion or contraction. Therefore, the elastic limits will remain same unless you increase the temperature high or low enough to change the properties of material.
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  m.vivekanandan

  thank you,got it